0x40012400: Analog to Digital Converter
146/146 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | ISR | ||||||||||||||||||||||||||||||||
0x4 | IER | ||||||||||||||||||||||||||||||||
0x8 | CR | ||||||||||||||||||||||||||||||||
0xc | CFGR1 | ||||||||||||||||||||||||||||||||
0x10 | CFGR2 | ||||||||||||||||||||||||||||||||
0x14 | SMPR | ||||||||||||||||||||||||||||||||
0x20 | AWD1TR | ||||||||||||||||||||||||||||||||
0x24 | AWD2TR | ||||||||||||||||||||||||||||||||
0x28 | CHSELR0 | ||||||||||||||||||||||||||||||||
0x28 | CHSELR1 | ||||||||||||||||||||||||||||||||
0x2c | AWD3TR | ||||||||||||||||||||||||||||||||
0x40 | DR | ||||||||||||||||||||||||||||||||
0xa0 | AWD2CR | ||||||||||||||||||||||||||||||||
0xa4 | AWD3CR | ||||||||||||||||||||||||||||||||
0xb4 | CALFACT | ||||||||||||||||||||||||||||||||
0x308 | CCR |
ADC interrupt and status register
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
10/10 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCRDY
rw |
EOCAL
rw |
AWD3
rw |
AWD2
rw |
AWD1
rw |
OVR
rw |
EOS
rw |
EOC
rw |
EOSMP
rw |
ADRDY
rw |
Bit 0: ADC ready This bit is set by hardware after the ADC has been enabled (ADEN=1) and when the ADC reaches a state where it is ready to accept conversion requests. It is cleared by software writing 1 to it..
Allowed values:
0: NotReady: ADC not yet ready to start conversion
1: Ready: ADC ready to start conversion
Bit 1: End of sampling flag This bit is set by hardware during the conversion, at the end of the sampling phase.It is cleared by software by programming it to '1'..
Allowed values:
0: NotAtEnd: Not at the end of the samplings phase
1: AtEnd: End of sampling phase reached
Bit 2: End of conversion flag This bit is set by hardware at the end of each conversion of a channel when a new data result is available in the ADC_DR register. It is cleared by software writing 1 to it or by reading the ADC_DR register..
Allowed values:
0: NotComplete: Channel conversion is not complete
1: Complete: Channel conversion complete
Bit 3: End of sequence flag This bit is set by hardware at the end of the conversion of a sequence of channels selected by the CHSEL bits. It is cleared by software writing 1 to it..
Allowed values:
0: NotComplete: Conversion sequence is not complete
1: Complete: Conversion sequence complete
Bit 4: ADC overrun This bit is set by hardware when an overrun occurs, meaning that a new conversion has complete while the EOC flag was already set. It is cleared by software writing 1 to it..
Allowed values:
0: NoOverrun: No overrun occurred
1: Overrun: Overrun occurred
Bit 7: Analog watchdog 1 flag This bit is set by hardware when the converted voltage crosses the values programmed in ADC_TR1 and ADC_HR1 registers. It is cleared by software by programming it to 1..
Allowed values:
0: NoEvent: No analog watchdog event occurred
1: Event: Analog watchdog event occurred
Bit 8: Analog watchdog 2 flag This bit is set by hardware when the converted voltage crosses the values programmed in ADC_AWD2TR and ADC_AWD2TR registers. It is cleared by software programming it it..
Allowed values:
0: NoEvent: No analog watchdog event occurred
1: Event: Analog watchdog event occurred
Bit 9: Analog watchdog 3 flag This bit is set by hardware when the converted voltage crosses the values programmed in ADC_AWD3TR and ADC_AWD3TR registers. It is cleared by software by programming it to 1..
Allowed values:
0: NoEvent: No analog watchdog event occurred
1: Event: Analog watchdog event occurred
Bit 11: End Of Calibration flag This bit is set by hardware when calibration is complete. It is cleared by software writing 1 to it..
Allowed values:
0: NotComplete: Calibration is not complete
1: Complete: Calibration complete
Bit 13: Channel Configuration Ready flag This flag bit is set by hardware when the channel configuration is applied after programming to ADC_CHSELR register or changing CHSELRMOD or SCANDIR. It is cleared by software by programming it to it. Note: When the software configures the channels (by programming ADC_CHSELR or changing CHSELRMOD or SCANDIR), it must wait until the CCRDY flag rises before configuring again or starting conversions, otherwise the new configuration (or the START bit) is ignored. Once the flag is asserted, if the software needs to configure again the channels, it must clear the CCRDY flag before proceeding with a new configuration..
Allowed values:
0: NotComplete: Channel configuration update not applied
1: Complete: Channel configuration update is applied
ADC interrupt enable register
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
10/10 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCRDYIE
rw |
EOCALIE
rw |
AWD3IE
rw |
AWD2IE
rw |
AWD1IE
rw |
OVRIE
rw |
EOSIE
rw |
EOCIE
rw |
EOSMPIE
rw |
ADRDYIE
rw |
Bit 0: ADC ready interrupt enable This bit is set and cleared by software to enable/disable the ADC Ready interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: ADRDY interrupt disabled
1: Enabled: ADRDY interrupt enabled. An interrupt is generated when the ADRDY bit is set.
Bit 1: End of sampling flag interrupt enable This bit is set and cleared by software to enable/disable the end of the sampling phase interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: EOSMP interrupt disabled
1: Enabled: EOSMP interrupt enabled. An interrupt is generated when the EOSMP bit is set.
Bit 2: End of conversion interrupt enable This bit is set and cleared by software to enable/disable the end of conversion interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: EOC interrupt disabled
1: Enabled: EOC interrupt enabled. An interrupt is generated when the EOC bit is set.
Bit 3: End of conversion sequence interrupt enable This bit is set and cleared by software to enable/disable the end of sequence of conversions interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: EOS interrupt disabled
1: Enabled: EOS interrupt enabled. An interrupt is generated when the EOS bit is set.
Bit 4: Overrun interrupt enable This bit is set and cleared by software to enable/disable the overrun interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Overrun interrupt disabled
1: Enabled: Overrun interrupt enabled. An interrupt is generated when the OVR bit is set.
Bit 7: Analog watchdog 1 interrupt enable This bit is set and cleared by software to enable/disable the analog watchdog interrupt. Note: The Software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Analog watchdog interrupt disabled
1: Enabled: Analog watchdog interrupt enabled
Bit 8: Analog watchdog 2 interrupt enable This bit is set and cleared by software to enable/disable the analog watchdog interrupt. Note: The Software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Analog watchdog interrupt disabled
1: Enabled: Analog watchdog interrupt enabled
Bit 9: Analog watchdog 3 interrupt enable This bit is set and cleared by software to enable/disable the analog watchdog interrupt. Note: The Software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Analog watchdog interrupt disabled
1: Enabled: Analog watchdog interrupt enabled
Bit 11: End of calibration interrupt enable This bit is set and cleared by software to enable/disable the end of calibration interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: End of calibration interrupt disabled
1: Enabled: End of calibration interrupt enabled
Bit 13: Channel Configuration Ready Interrupt enable This bit is set and cleared by software to enable/disable the channel configuration ready interrupt. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Channel configuration ready interrupt disabled
1: Enabled: Channel configuration ready interrupt enabled
ADC control register
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
6/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADCAL
rw |
ADVREGEN
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ADSTP
rw |
ADSTART
rw |
ADDIS
rw |
ADEN
rw |
Bit 0: ADC enable command This bit is set by software to enable the ADC. The ADC is effectively ready to operate once the ADRDY flag has been set. It is cleared by hardware when the ADC is disabled, after the execution of the ADDIS command. Note: The software is allowed to set ADEN only when all bits of ADC_CR registers are 0 (ADCAL=0, ADSTP=0, ADSTART=0, ADDIS=0 and ADEN=0).
Allowed values:
0: Disabled: ADC disabled
1: Enabled: ADC enabled
Bit 1: ADC disable command This bit is set by software to disable the ADC (ADDIS command) and put it into power-down state (OFF state). It is cleared by hardware once the ADC is effectively disabled (ADEN is also cleared by hardware at this time). Note: Setting ADDIS to '1' is only effective when ADEN=1 and ADSTART=0 (which ensures that no conversion is ongoing).
Allowed values:
0: NotDisabling: No disable command active
1: Disabling: ADC disabling
Bit 2: ADC start conversion command This bit is set by software to start ADC conversion. Depending on the EXTEN [1:0] configuration bits, a conversion either starts immediately (software trigger configuration) or once a hardware trigger event occurs (hardware trigger configuration). It is cleared by hardware: In single conversion mode (CONT=0, DISCEN=0), when software trigger is selected (EXTEN=00): at the assertion of the end of Conversion Sequence (EOS) flag. In discontinuous conversion mode(CONT=0, DISCEN=1), when the software trigger is selected (EXTEN=00): at the assertion of the end of Conversion (EOC) flag. In all other cases: after the execution of the ADSTP command, at the same time as the ADSTP bit is cleared by hardware. Note: The software is allowed to set ADSTART only when ADEN=1 and ADDIS=0 (ADC is enabled and there is no pending request to disable the ADC). After writing to ADC_CHSELR register or changing CHSELRMOD or SCANDIRW, it is mandatory to wait until CCRDY flag is asserted before setting ADSTART, otherwise, the value written to ADSTART is ignored..
Allowed values:
0: NotActive: No conversion ongoing
1: Active: ADC operating and may be converting
Bit 4: ADC stop conversion command This bit is set by software to stop and discard an ongoing conversion (ADSTP Command). It is cleared by hardware when the conversion is effectively discarded and the ADC is ready to accept a new start conversion command. Note: Setting ADSTP to '1' is only effective when ADSTART=1 and ADDIS=0 (ADC is enabled and may be converting and there is no pending request to disable the ADC).
Allowed values:
0: NotStopping: No stop command active
1: Stopping: ADC stopping conversion
Bit 28: ADC Voltage Regulator Enable This bit is set by software, to enable the ADC internal voltage regulator. The voltage regulator output is available after tADCVREG_SETUP. It is cleared by software to disable the voltage regulator. It can be cleared only if ADEN is et to 0. Note: The software is allowed to program this bit field only when the ADC is disabled (ADCAL=0, ADSTART=0, ADSTP=0, ADDIS=0 and ADEN=0)..
Allowed values:
0: Disabled: ADC voltage regulator disabled
1: Enabled: ADC voltage regulator enabled
Bit 31: ADC calibration This bit is set by software to start the calibration of the ADC. It is cleared by hardware after calibration is complete. Note: The software is allowed to set ADCAL only when the ADC is disabled (ADCAL=0, ADSTART=0, ADSTP=0, ADDIS=0 and ADEN=0). The software is allowed to update the calibration factor by writing ADC_CALFACT only when ADEN=1 and ADSTART=0 (ADC enabled and no conversion is ongoing)..
Allowed values:
0: NotCalibrating: ADC calibration either not yet performed or completed
1: Calibrating: ADC calibration in progress
ADC configuration register 1
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AWD1CH
rw |
AWD1EN
rw |
AWD1SGL
rw |
CHSELRMOD
rw |
DISCEN
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AUTOFF
rw |
WAIT
rw |
CONT
rw |
OVRMOD
rw |
EXTEN
rw |
EXTSEL
rw |
ALIGN
rw |
RES
rw |
SCANDIR
rw |
DMACFG
rw |
DMAEN
rw |
Bit 0: Direct memory access enable This bit is set and cleared by software to enable the generation of DMA requests. This allows the DMA controller to be used to manage automatically the converted data. For more details, refer to . Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: DMA disabled
1: Enabled: DMA enabled
Bit 1: Direct memory access configuration This bit is set and cleared by software to select between two DMA modes of operation and is effective only when DMAEN=1. For more details, refer to page403 Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: OneShot: DMA one shot mode selected
1: Circular: DMA circular mode selected
Bit 2: Scan sequence direction This bit is set and cleared by software to select the direction in which the channels is scanned in the sequence. It is effective only if CHSELMOD bit is cleared to 0. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: Upward: Upward scan (from CHSEL0 to CHSEL17)
1: Backward: Backward scan (from CHSEL17 to CHSEL0)
Bits 3-4: Data resolution These bits are written by software to select the resolution of the conversion. Note: The software is allowed to write these bits only when ADEN=0..
Allowed values:
0: Bits12: 12 bits
1: Bits10: 10 bits
2: Bits8: 8 bits
3: Bits6: 6 bits
Bit 5: Data alignment This bit is set and cleared by software to select right or left alignment. Refer to Data alignment and resolution (oversampling disabled: OVSE = 0) on page401 Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Right: Right alignment
1: Left: Left alignment
Bits 6-8: External trigger selection These bits select the external event used to trigger the start of conversion (refer to External triggers for details): Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: TIM1_TRGO: Timer 1 TRGO event
1: TIM1_CC4: Timer 1 CC4 event
2: TIM2_TRGO: Timer 2 TRGO event
3: TIM2_CH4: Timer 2 CH4 event
5: TIM2_CH3: Timer 2 CH3 event
7: EXTI_LINE11: EXTI line 11 event
Bits 10-11: External trigger enable and polarity selection These bits are set and cleared by software to select the external trigger polarity and enable the trigger. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Hardware trigger detection disabled
1: RisingEdge: Hardware trigger detection on the rising edge
2: FallingEdge: Hardware trigger detection on the falling edge
3: BothEdges: Hardware trigger detection on both the rising and falling edges
Bit 12: Overrun management mode This bit is set and cleared by software and configure the way data overruns are managed. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Preserve: ADC_DR register is preserved with the old data when an overrun is detected
1: Overwrite: ADC_DR register is overwritten with the last conversion result when an overrun is detected
Bit 13: Single / continuous conversion mode This bit is set and cleared by software. If it is set, conversion takes place continuously until it is cleared. Note: It is not possible to have both discontinuous mode and continuous mode enabled: it is forbidden to set both bits DISCEN=1 and CONT=1. The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Single: Single conversion mode
1: Continuous: Continuous conversion mode
Bit 14: Wait conversion mode This bit is set and cleared by software to enable/disable wait conversion mode.. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Wait conversion mode off
1: Enabled: Wait conversion mode on
Bit 15: Auto-off mode This bit is set and cleared by software to enable/disable auto-off mode.. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Auto-off mode disabled
1: Enabled: Auto-off mode enabled
Bit 16: Discontinuous mode This bit is set and cleared by software to enable/disable discontinuous mode. Note: It is not possible to have both discontinuous mode and continuous mode enabled: it is forbidden to set both bits DISCEN=1 and CONT=1. The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Discontinuous mode disabled
1: Enabled: Discontinuous mode enabled
Bit 21: Mode selection of the ADC_CHSELR register This bit is set and cleared by software to control the ADC_CHSELR feature: Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: BitPerInput: Each bit of the ADC_CHSELR register enables an input
1: Sequence: ADC_CHSELR register is able to sequence up to 8 channels
Bit 22: Enable the watchdog on a single channel or on all channels This bit is set and cleared by software to enable the analog watchdog on the channel identified by the AWDCH[4:0] bits or on all the channels Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: AllChannels: Analog watchdog 1 enabled on all channels
1: SingleChannel: Analog watchdog 1 enabled on a single channel
Bit 23: Analog watchdog enable This bit is set and cleared by software. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Analog watchdog 1 disabled
1: Enabled: Analog watchdog 1 enabled
Bits 26-30: Analog watchdog channel selection These bits are set and cleared by software. They select the input channel to be guarded by the analog watchdog. ..... Others: Reserved Note: The channel selected by the AWDCH[4:0] bits must be also set into the CHSELR register. The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values: 0x0-0x11
ADC configuration register 2
Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified
6/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CKMODE
rw |
LFTRIG
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TOVS
rw |
OVSS
rw |
OVSR
rw |
OVSE
rw |
Bit 0: Oversampler Enable This bit is set and cleared by software. Note: Software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Oversampler disabled
1: Enabled: Oversampler enabled
Bits 2-4: Oversampling ratio This bit filed defines the number of oversampling ratio. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Mul2: 2x
1: Mul4: 4x
2: Mul8: 8x
3: Mul16: 16x
4: Mul32: 32x
5: Mul64: 64x
6: Mul128: 128x
7: Mul256: 256x
Bits 5-8: Oversampling shift This bit is set and cleared by software. Others: Reserved Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NoShift: No shift
1: Shift1: Shift 1-bit
2: Shift2: Shift 2-bits
3: Shift3: Shift 3-bits
4: Shift4: Shift 4-bits
5: Shift5: Shift 5-bits
6: Shift6: Shift 6-bits
7: Shift7: Shift 7-bits
8: Shift8: Shift 8-bits
Bit 9: Triggered Oversampling This bit is set and cleared by software. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: TriggerAll: All oversampled conversions for a channel are done consecutively after a trigger
1: TriggerEach: Each oversampled conversion for a channel needs a trigger
Bit 29: Low frequency trigger mode enable This bit is set and cleared by software. Note: The software is allowed to write this bit only when ADSTART bit is cleared to 0 (this ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Low Frequency Trigger Mode disabled
1: Enabled: Low Frequency Trigger Mode enabled
Bits 30-31: ADC clock mode These bits are set and cleared by software to define how the analog ADC is clocked: In all synchronous clock modes, there is no jitter in the delay from a timer trigger to the start of a conversion. Note: The software is allowed to write these bits only when the ADC is disabled (ADCAL=0, ADSTART=0, ADSTP=0, ADDIS=0 and ADEN=0)..
Allowed values:
0: ADCLK: ADCCLK (Asynchronous clock mode)
1: PCLK_Div2: PCLK/2 (Synchronous clock mode)
2: PCLK_Div4: PCLK/4 (Synchronous clock mode)
3: PCLK: PCLK (Synchronous clock mode)
ADC sampling time register
Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified
21/21 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SMPSEL18
rw |
SMPSEL17
rw |
SMPSEL16
rw |
SMPSEL15
rw |
SMPSEL14
rw |
SMPSEL13
rw |
SMPSEL12
rw |
SMPSEL11
rw |
SMPSEL10
rw |
SMPSEL9
rw |
SMPSEL8
rw |
|||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SMPSEL7
rw |
SMPSEL6
rw |
SMPSEL5
rw |
SMPSEL4
rw |
SMPSEL3
rw |
SMPSEL2
rw |
SMPSEL1
rw |
SMPSEL0
rw |
SMP2
rw |
SMP1
rw |
Bits 0-2: Sampling time selection 1 These bits are written by software to select the sampling time that applies to all channels. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Cycles1_5: 1.5 ADC clock cycles
1: Cycles3_5: 3.5 ADC clock cycles
2: Cycles7_5: 7.5 ADC clock cycles
3: Cycles12_5: 12.5 ADC clock cycles
4: Cycles19_5: 19.5 ADC clock cycles
5: Cycles39_5: 39.5 ADC clock cycles
6: Cycles79_5: 79.5 ADC clock cycles
7: Cycles160_5: 160.5 ADC clock cycles
Bits 4-6: Sampling time selection 2 These bits are written by software to select the sampling time that applies to all channels. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Cycles1_5: 1.5 ADC clock cycles
1: Cycles3_5: 3.5 ADC clock cycles
2: Cycles7_5: 7.5 ADC clock cycles
3: Cycles12_5: 12.5 ADC clock cycles
4: Cycles19_5: 19.5 ADC clock cycles
5: Cycles39_5: 39.5 ADC clock cycles
6: Cycles79_5: 79.5 ADC clock cycles
7: Cycles160_5: 160.5 ADC clock cycles
Bit 8: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 9: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 10: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 11: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 12: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 13: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 14: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 15: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 16: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 17: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 18: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 19: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 20: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 21: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 22: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 23: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 24: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 25: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
Bit 26: Channel-x sampling time selection These bits are written by software to define which sampling time is used. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Smp1: Sampling time of CHANNELx use the setting of SMP1 register
1: Smp2: Sampling time of CHANNELx use the setting of SMP2 register
ADC watchdog threshold register
Offset: 0x20, size: 32, reset: 0x0FFF0000, access: Unspecified
2/2 fields covered.
Bits 0-11: Analog watchdog 1 lower threshold These bits are written by software to define the lower threshold for the analog watchdog. Refer to ADC_AWDxTR) on page407..
Allowed values: 0x0-0xfff
Bits 16-27: Analog watchdog 1 higher threshold These bits are written by software to define the higher threshold for the analog watchdog. Refer to ADC_AWDxTR) on page407..
Allowed values: 0x0-0xfff
ADC watchdog threshold register
Offset: 0x24, size: 32, reset: 0x0FFF0000, access: Unspecified
2/2 fields covered.
Bits 0-11: Analog watchdog 2 lower threshold These bits are written by software to define the lower threshold for the analog watchdog. Refer to ADC_AWDxTR) on page407..
Allowed values: 0x0-0xfff
Bits 16-27: Analog watchdog 2 higher threshold These bits are written by software to define the higher threshold for the analog watchdog. Refer to ADC_AWDxTR) on page407..
Allowed values: 0x0-0xfff
ADC channel selection register [alternate]
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
19/19 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CHSEL18
rw |
CHSEL17
rw |
CHSEL16
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CHSEL15
rw |
CHSEL14
rw |
CHSEL13
rw |
CHSEL12
rw |
CHSEL11
rw |
CHSEL10
rw |
CHSEL9
rw |
CHSEL8
rw |
CHSEL7
rw |
CHSEL6
rw |
CHSEL5
rw |
CHSEL4
rw |
CHSEL3
rw |
CHSEL2
rw |
CHSEL1
rw |
CHSEL0
rw |
Bit 0: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 1: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 2: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 3: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 4: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 5: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 6: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 7: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 8: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 9: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 10: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 11: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 12: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 13: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 14: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 15: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 16: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 17: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
Bit 18: Channel-x selection These bits are written by software and define which channels are part of the sequence of channels to be converted. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing). If CCRDY is not yet asserted after channel configuration (writing ADC_CHSELR register or changing CHSELRMOD or SCANDIR), the value written to this bit is ignored..
Allowed values:
0: NotSelected: Input Channel is not selected for conversion
1: Selected: Input Channel is selected for conversion
channel selection register CHSELRMOD = 1 in ADC_CFGR1
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SQ8
rw |
SQ7
rw |
SQ6
rw |
SQ5
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SQ4
rw |
SQ3
rw |
SQ2
rw |
SQ1
rw |
Bits 0-3: 1st conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence
Bits 4-7: 2nd conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence
Bits 8-11: 3rd conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence
Bits 12-15: 4th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence
Bits 16-19: 5th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence
Bits 20-23: 6th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence
Bits 24-27: 7th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. Refer to SQ8[3:0] for a definition of channel selection. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence
Bits 28-31: 8th conversion of the sequence These bits are programmed by software with the channel number (0...14) assigned to the 8th conversion of the sequence. 0b1111 indicates the end of the sequence. When 0b1111 (end of sequence) is programmed to the lower sequence channels, these bits are ignored. ... Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Ch0: Channel 0 selected for the Nth conversion
1: Ch1: Channel 1 selected for the Nth conversion
2: Ch2: Channel 2 selected for the Nth conversion
3: Ch3: Channel 3 selected for the Nth conversion
4: Ch4: Channel 4 selected for the Nth conversion
5: Ch5: Channel 5 selected for the Nth conversion
6: Ch6: Channel 6 selected for the Nth conversion
7: Ch7: Channel 7 selected for the Nth conversion
8: Ch8: Channel 8 selected for the Nth conversion
9: Ch9: Channel 9 selected for the Nth conversion
10: Ch10: Channel 10 selected for the Nth conversion
11: Ch11: Channel 11 selected for the Nth conversion
12: Ch12: Channel 12 selected for the Nth conversion
13: Ch13: Channel 13 selected for the Nth conversion
14: Ch14: Channel 14 selected for the Nth conversion
15: EOS: End of sequence
ADC watchdog threshold register
Offset: 0x2c, size: 32, reset: 0x0FFF0000, access: Unspecified
2/2 fields covered.
Bits 0-11: Analog watchdog 3lower threshold These bits are written by software to define the lower threshold for the analog watchdog. Refer to ADC_AWDxTR) on page407..
Allowed values: 0x0-0xfff
Bits 16-27: Analog watchdog 3 higher threshold These bits are written by software to define the higher threshold for the analog watchdog. Refer to ADC_AWDxTR) on page407..
Allowed values: 0x0-0xfff
ADC data register
Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DATA
r |
Bits 0-15: Converted data These bits are read-only. They contain the conversion result from the last converted channel. The data are left- or right-aligned as shown in OVSE = 0) on page401. Just after a calibration is complete, DATA[6:0] contains the calibration factor..
Allowed values: 0x0-0xffff
ADC Analog Watchdog 2 Configuration register
Offset: 0xa0, size: 32, reset: 0x00000000, access: Unspecified
19/19 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AWD2CH18
rw |
AWD2CH17
rw |
AWD2CH16
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AWD2CH15
rw |
AWD2CH14
rw |
AWD2CH13
rw |
AWD2CH12
rw |
AWD2CH11
rw |
AWD2CH10
rw |
AWD2CH9
rw |
AWD2CH8
rw |
AWD2CH7
rw |
AWD2CH6
rw |
AWD2CH5
rw |
AWD2CH4
rw |
AWD2CH3
rw |
AWD2CH2
rw |
AWD2CH1
rw |
AWD2CH0
rw |
Bit 0: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 1: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 2: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 3: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 4: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 5: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 6: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 7: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 8: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 9: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 10: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 11: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 12: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 13: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 14: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 15: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 16: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 17: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
Bit 18: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 2 (AWD2). Note: The channels selected through ADC_AWD2CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD2
1: Monitored: ADC analog channel-x is monitored by AWD2
ADC Analog Watchdog 3 Configuration register
Offset: 0xa4, size: 32, reset: 0x00000000, access: Unspecified
19/19 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AWD3CH18
rw |
AWD3CH17
rw |
AWD3CH16
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AWD3CH15
rw |
AWD3CH14
rw |
AWD3CH13
rw |
AWD3CH12
rw |
AWD3CH11
rw |
AWD3CH10
rw |
AWD3CH9
rw |
AWD3CH8
rw |
AWD3CH7
rw |
AWD3CH6
rw |
AWD3CH5
rw |
AWD3CH4
rw |
AWD3CH3
rw |
AWD3CH2
rw |
AWD3CH1
rw |
AWD3CH0
rw |
Bit 0: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 1: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 2: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 3: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 4: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 5: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 6: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 7: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 8: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 9: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 10: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 11: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 12: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 13: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 14: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 15: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 16: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 17: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
Bit 18: Analog watchdog channel selection These bits are set and cleared by software. They enable and select the input channels to be guarded by analog watchdog 3 (AWD3). Note: The channels selected through ADC_AWD3CR must be also configured into the ADC_CHSELR registers. Refer to SQ8[3:0] for a definition of channel selection. The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: NotMonitored: ADC analog channel-x is not monitored by AWD3
1: Monitored: ADC analog channel-x is monitored by AWD3
ADC Calibration factor
Offset: 0xb4, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CALFACT
rw |
Bits 0-6: Calibration factor These bits are written by hardware or by software. Once a calibration is complete,they are updated by hardware with the calibration factors. Software can write these bits with a new calibration factor. If the new calibration factor is different from the current one stored into the analog ADC, it is then applied once a new calibration is launched. Just after a calibration is complete, DATA[6:0] contains the calibration factor. Note: Software can write these bits only when ADEN=1 (ADC is enabled and no calibration is ongoing and no conversion is ongoing). Refer to SQ8[3:0] for a definition of channel selection..
Allowed values: 0x0-0x7f
ADC common configuration register
Offset: 0x308, size: 32, reset: 0x00000000, access: Unspecified
4/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
VBATEN
rw |
TSEN
rw |
VREFEN
rw |
PRESC
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Bits 18-21: ADC prescaler Set and cleared by software to select the frequency of the clock to the ADC. Other: Reserved Note: Software is allowed to write these bits only when the ADC is disabled (ADCAL=0, ADSTART=0, ADSTP=0, ADDIS=0 and ADEN=0)..
Allowed values:
0: Div1: Input ADC clock not divided
1: Div2: Input ADC clock divided by 2
2: Div4: Input ADC clock divided by 4
3: Div6: Input ADC clock divided by 6
4: Div8: Input ADC clock divided by 8
5: Div10: Input ADC clock divided by 10
6: Div12: Input ADC clock divided by 12
7: Div16: Input ADC clock divided by 16
8: Div32: Input ADC clock divided by 32
9: Div64: Input ADC clock divided by 64
10: Div128: Input ADC clock divided by 128
11: Div256: Input ADC clock divided by 256
Bit 22: VREFINT enable This bit is set and cleared by software to enable/disable the VREFINT. Note: Software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: VREFINT disabled
1: Enabled: VREFINT enabled
Bit 23: Temperature sensor enable This bit is set and cleared by software to enable/disable the temperature sensor. Note: Software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing)..
Allowed values:
0: Disabled: Temperature sensor disabled
1: Enabled: Temperature sensor enabled
Bit 24: VBAT enable This bit is set and cleared by software to enable/disable the VBAT channel. Note: The software is allowed to write this bit only when ADSTART=0 (which ensures that no conversion is ongoing).
Allowed values:
0: Disabled: VBAT channel disabled
1: Enabled: VBAT channel enabled
0x40026000: Advanced Encryption Standard
5/40 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR | ||||||||||||||||||||||||||||||||
0x4 | SR | ||||||||||||||||||||||||||||||||
0x8 | DINR | ||||||||||||||||||||||||||||||||
0xc | DOUTR | ||||||||||||||||||||||||||||||||
0x10 | KEYR0 | ||||||||||||||||||||||||||||||||
0x14 | KEYR1 | ||||||||||||||||||||||||||||||||
0x18 | KEYR2 | ||||||||||||||||||||||||||||||||
0x1c | KEYR3 | ||||||||||||||||||||||||||||||||
0x20 | IVR0 | ||||||||||||||||||||||||||||||||
0x24 | IVR1 | ||||||||||||||||||||||||||||||||
0x28 | IVR2 | ||||||||||||||||||||||||||||||||
0x2c | IVR3 | ||||||||||||||||||||||||||||||||
0x30 | KEYR4 | ||||||||||||||||||||||||||||||||
0x34 | KEYR5 | ||||||||||||||||||||||||||||||||
0x38 | KEYR6 | ||||||||||||||||||||||||||||||||
0x3c | KEYR7 | ||||||||||||||||||||||||||||||||
0x40 | SUSP0R | ||||||||||||||||||||||||||||||||
0x44 | SUSP1R | ||||||||||||||||||||||||||||||||
0x48 | SUSP2R | ||||||||||||||||||||||||||||||||
0x4c | SUSP3R | ||||||||||||||||||||||||||||||||
0x50 | SUSP4R | ||||||||||||||||||||||||||||||||
0x54 | SUSP5R | ||||||||||||||||||||||||||||||||
0x58 | SUSP6R | ||||||||||||||||||||||||||||||||
0x5c | SUSP7R |
AES control register
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
0/14 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NPBLB
rw |
KEYSIZE
rw |
CHMOD2
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
GCMPH
rw |
DMAOUTEN
rw |
DMAINEN
rw |
ERRIE
rw |
CCFIE
rw |
ERRC
rw |
CCFC
rw |
CHMOD1
rw |
MODE
rw |
DATATYPE
rw |
EN
rw |
Bit 0: AES enable This bit enables/disables the AES peripheral: At any moment, clearing then setting the bit re-initializes the AES peripheral. This bit is automatically cleared by hardware upon the completion of the key preparation (Mode 2) and upon the completion of GCM/GMAC/CCM initial phase..
Bits 1-2: Data type selection This bitfield defines the format of data written in the AES_DINR register or read from the AES_DOUTR register, through selecting the mode of data swapping: For more details, refer to . Attempts to write the bitfield are ignored when the EN bit of the AES_CR register is set before the write access and it is not cleared by that write access..
Bits 3-4: AES operating mode This bitfield selects the AES operating mode: Attempts to write the bitfield are ignored when the EN bit of the AES_CR register is set before the write access and it is not cleared by that write access. Any attempt to selecting Mode 4 while either ECB or CBC chaining mode is not selected, defaults to effective selection of Mode 3. It is not possible to select a Mode 3 following a Mode 4..
Bits 5-6: Chaining mode selection, bit [2] Refer to the bits [5:6] of the register for the description of the CHMOD[2:0] bitfield CHMOD[1:0]: Chaining mode selection, bits [1:0] This bitfield, together with the bit CHMOD[2] forming CHMOD[2:0], selects the AES chaining mode: others: Reserved Attempts to write the bitfield are ignored when the EN bit of the AES_CR register is set before the write access and it is not cleared by that write access..
Bit 7: Computation complete flag clear Upon written to 1, this bit clears the computation complete flag (CCF) in the AES_SR register: Reading the flag always returns zero..
Bit 8: Error flag clear Upon written to 1, this bit clears the RDERR and WRERR error flags in the AES_SR register: Reading the flag always returns zero..
Bit 9: CCF interrupt enable This bit enables or disables (masks) the AES interrupt generation when CCF (computation complete flag) is set:.
Bit 10: Error interrupt enable This bit enables or disables (masks) the AES interrupt generation when RDERR and/or WRERR is set:.
Bit 11: DMA input enable This bit enables/disables data transferring with DMA, in the input phase: When the bit is set, DMA requests are automatically generated by AES during the input data phase. This feature is only effective when Mode 1 or Mode 3 is selected through the MODE[1:0] bitfield. It is not effective for Mode 2 (key derivation). Usage of DMA with Mode 4 (single decryption) is not recommended..
Bit 12: DMA output enable This bit enables/disables data transferring with DMA, in the output phase: When the bit is set, DMA requests are automatically generated by AES during the output data phase. This feature is only effective when Mode 1 or Mode 3 is selected through the MODE[1:0] bitfield. It is not effective for Mode 2 (key derivation). Usage of DMA with Mode 4 (single decryption) is not recommended..
Bits 13-14: GCM or CCM phase selection This bitfield selects the phase of GCM, GMAC or CCM algorithm: The bitfield has no effect if other than GCM, GMAC or CCM algorithms are selected (through the ALGOMODE bitfield)..
Bit 16: Chaining mode selection, bit [2] Refer to the bits [5:6] of the register for the description of the CHMOD[2:0] bitfield CHMOD[1:0]: Chaining mode selection, bits [1:0] This bitfield, together with the bit CHMOD[2] forming CHMOD[2:0], selects the AES chaining mode: others: Reserved Attempts to write the bitfield are ignored when the EN bit of the AES_CR register is set before the write access and it is not cleared by that write access..
Bit 18: Key size selection This bitfield defines the length of the key used in the AES cryptographic core, in bits: Attempts to write the bit are ignored when the EN bit of the AES_CR register is set before the write access and it is not cleared by that write access..
Bits 20-23: Number of padding bytes in last block The bitfield sets the number of padding bytes in last block of payload: ....
AES status register
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
4/4 fields covered.
Bit 0: Computation completed flag This flag indicates whether the computation is completed: The flag is set by hardware upon the completion of the computation. It is cleared by software, upon setting the CCFC bit of the AES_CR register. Upon the flag setting, an interrupt is generated if enabled through the CCFIE bit of the AES_CR register. The flag is significant only when the DMAOUTEN bit is 0. It may stay high when DMA_EN is 1..
Bit 1: Read error flag This flag indicates the detection of an unexpected read operation from the AES_DOUTR register (during computation or data input phase): The flag is set by hardware. It is cleared by software upon setting the ERRC bit of the AES_CR register. Upon the flag setting, an interrupt is generated if enabled through the ERRIE bit of the AES_CR register. The flag setting has no impact on the AES operation. Unexpected read returns zero..
Bit 2: Write error This flag indicates the detection of an unexpected write operation to the AES_DINR register (during computation or data output phase): The flag is set by hardware. It is cleared by software upon setting the ERRC bit of the AES_CR register. Upon the flag setting, an interrupt is generated if enabled through the ERRIE bit of the AES_CR register. The flag setting has no impact on the AES operation. Unexpected write is ignored..
Bit 3: Busy.
AES data input register
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: Input data word A four-fold sequential write to this bitfield during the input phase results in writing a complete 128-bit block of input data to the AES peripheral. From the first to the fourth write, the corresponding data weights are [127:96], [95:64], [63:32], and [31:0]. Upon each write, the data from the 32-bit input buffer are handled by the data swap block according to the DATATYPE[1:0] bitfield, then written into the AES core 128-bit input buffer. The data signification of the input data block depends on the AES operating mode: - Mode 1 (encryption): plaintext - Mode 2 (key derivation): the bitfield is not used (AES_KEYRx registers used for input) - Mode 3 (decryption) and Mode 4 (key derivation then single decryption): ciphertext The data swap operation is described in page499..
AES data output register
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
Bits 0-31: Output data word This read-only bitfield fetches a 32-bit output buffer. A four-fold sequential read of this bitfield, upon the computation completion (CCF set), virtually reads a complete 128-bit block of output data from the AES peripheral. Before reaching the output buffer, the data produced by the AES core are handled by the data swap block according to the DATATYPE[1:0] bitfield. Data weights from the first to the fourth read operation are: [127:96], [95:64], [63:32], and [31:0]. The data signification of the output data block depends on the AES operating mode: - Mode 1 (encryption): ciphertext - Mode 2 (key derivation): the bitfield is not used (AES_KEYRx registers used for output) - Mode 3 (decryption) and Mode 4 (key derivation then single decryption): plaintext The data swap operation is described in page499..
AES key register 0
Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: Cryptographic key, bits [31:0] This bitfield contains the bits [31:0] of the AES encryption or decryption key, depending on the operating mode: - In Mode 1 (encryption), Mode 2 (key derivation) and Mode 4 (key derivation then single decryption): the value to write into the bitfield is the encryption key. - In Mode 3 (decryption): the value to write into the bitfield is the encryption key to be derived before being used for decryption. After writing the encryption key into the bitfield, its reading before enabling AES returns the same value. Its reading after enabling AES and after the CCF flag is set returns the decryption key derived from the encryption key. Note: In mode 4 (key derivation then single decryption) the bitfield always contains the encryption key. The AES_KEYRx registers may be written only when KEYSIZE value is correct and when the AES peripheral is disabled (EN bit of the AES_CR register cleared). Note that, if, the key is directly loaded to AES_KEYRx registers (hence writes to key register is ignored and KEIF is set). Refer to for more details..
AES key register 1
Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES key register 2
Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES key register 3
Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES initialization vector register 0
Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES initialization vector register 1
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES initialization vector register 2
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES initialization vector register 3
Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES key register 4
Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES key register 5
Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES key register 6
Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES key register 7
Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES suspend registers
Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES suspend registers
Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES suspend registers
Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES suspend registers
Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES suspend registers
Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES suspend registers
Offset: 0x54, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
AES suspend registers
Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
0x40010200: Comparator
3/33 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | COMP1_CSR | ||||||||||||||||||||||||||||||||
0x4 | COMP2_CSR | ||||||||||||||||||||||||||||||||
0x8 | COMP3_CSR |
Comparator 1 control and status register
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
1/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LOCK
rw |
VALUE
r |
BLANKSEL
rw |
PWRMODE
rw |
HYST
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
POLARITY
rw |
WINOUT
rw |
WINMODE
rw |
INPSEL
rw |
INMSEL
rw |
EN
rw |
Bit 0: Comparator 1 enable bit This bit is controlled by software (if not locked). It enables the comparator 1:.
Bits 4-7: Comparator 1 signal selector for inverting input INM This bitfield is controlled by software (if not locked). It selects the signal for the inverting input COMP1_INM of the comparator 1: > 1000: 1/4 VREFINT.
Bits 8-9: Comparator 1 signal selector for non-inverting input This bitfield is controlled by software (if not locked). It selects the signal for the non-inverting input COMP1_INP of the comparator 1 (also see the WINMODE bit):.
Bit 11: Comparator 1 non-inverting input selector for window mode This bit is controlled by software (if not locked). It selects the signal for COMP1_INP input of the comparator 1:.
Bit 14: Comparator 1 output selector This bit is controlled by software (if not locked). It selects the comparator 1 output:.
Bit 15: Comparator 1 polarity selector This bit is controlled by software (if not locked). It selects the comparator 1 output polarity:.
Bits 16-17: Comparator 1 hysteresis selector This bitfield is controlled by software (if not locked). It selects the hysteresis of the comparator 1:.
Bits 18-19: Comparator 1 power mode selector This bitfield is controlled by software (if not locked). It selects the power consumption and as a consequence the speed of the comparator 1: others: Reserved.
Bits 20-24: Comparator 1 blanking source selector This bitfield is controlled by software (if not locked). It selects the blanking source: xxxx1: TIM1 OC4 xxx1x: TIM1 OC5 xx1xx: TIM2 OC3 x1xxx: TIM3 OC3 1xxxx: TIM15 OC2.
Bit 30: Comparator 1 output status This bit is read-only. It reflects the level of the comparator 1 output after the polarity selector and blanking, as indicated in ..
Bit 31: COMP1_CSR register lock This bit is set by software and cleared by a system reset. It locks the whole content of the comparator 1 control register COMP1_CSR[31:0]:.
Comparator 2 control and status register
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
1/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LOCK
rw |
VALUE
r |
BLANKSEL
rw |
PWRMODE
rw |
HYST
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
POLARITY
rw |
WINOUT
rw |
WINMODE
rw |
INPSEL
rw |
INMSEL
rw |
EN
rw |
Bit 0: Comparator 2 enable bit This bit is controlled by software (if not locked). It enables the comparator 2:.
Bits 4-7: Comparator 2 signal selector for inverting input INM This bitfield is controlled by software (if not locked). It selects the signal for the inverting input COMP2_INM of the comparator 2: > 1000: 1/4 VREFINT.
Bits 8-9: Comparator 2 signal selector for non-inverting input This bitfield is controlled by software (if not locked). It selects the signal for the non-inverting input COMP2_INP of the comparator 2 (also see the WINMODE bit):.
Bit 11: Comparator 2 non-inverting input selector for window mode This bit is controlled by software (if not locked). It selects the signal for COMP2_INP input of the comparator 2:.
Bit 14: Comparator 2 output selector This bit is controlled by software (if not locked). It selects the comparator 2 output:.
Bit 15: Comparator 2 polarity selector This bit is controlled by software (if not locked). It selects the comparator 2 output polarity:.
Bits 16-17: Comparator 2 hysteresis selector This bitfield is controlled by software (if not locked). It selects the hysteresis of the comparator 2:.
Bits 18-19: Comparator 2 power mode selector This bitfield is controlled by software (if not locked). It selects the power consumption and as a consequence the speed of the comparator 2: others: Reserved.
Bits 20-24: Comparator 2 blanking source selector This bitfield is controlled by software (if not locked). It selects the blanking source: xxxx1: TIM1 OC4 xxx1x: TIM1 OC5 xx1xx: TIM2 OC3 x1xxx: TIM3 OC3 1xxxx: TIM15 OC2.
Bit 30: Comparator 2 output status This bit is read-only. It reflects the level of the comparator 2 output after the polarity selector and blanking, as indicated in ..
Bit 31: COMP2_CSR register lock This bit is set by software and cleared by a system reset. It locks the whole content of the comparator 2 control register COMP2_CSR[31:0]:.
Comparator 2 control and status register
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
1/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LOCK
rw |
VALUE
r |
BLANKSEL
rw |
PWRMODE
rw |
HYST
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
POLARITY
rw |
WINOUT
rw |
WINMODE
rw |
INPSEL
rw |
INMSEL
rw |
EN
rw |
Bit 0: Comparator 3 enable bit This bit is controlled by software (if not locked). It enables the comparator 3:.
Bits 4-7: Comparator 3 signal selector for inverting input INM This bitfield is controlled by software (if not locked). It selects the signal for the inverting input COMP3_INM of the comparator 3: > 1000: 1/4 VREFINT.
Bits 8-9: Comparator 3 signal selector for non-inverting input This bitfield is controlled by software (if not locked). It selects the signal for the non-inverting input COMP3_INP of the comparator 3 (also see the WINMODE bit):.
Bit 11: Comparator 3 non-inverting input selector for window mode This bit is controlled by software (if not locked). It selects the signal for COMP3_INP input of the comparator 3:.
Bit 14: Comparator 3 output selector This bit is controlled by software (if not locked). It selects the comparator 3 output:.
Bit 15: Comparator 2 polarity selector This bit is controlled by software (if not locked). It selects the comparator 3 output polarity:.
Bits 16-17: Comparator 3 hysteresis selector This bitfield is controlled by software (if not locked). It selects the hysteresis of the comparator 3:.
Bits 18-19: Comparator 3 power mode selector This bitfield is controlled by software (if not locked). It selects the power consumption and as a consequence the speed of the comparator 3: others: Reserved.
Bits 20-24: Comparator 3 blanking source selector This bitfield is controlled by software (if not locked). It selects the blanking source: xxxx1: TIM1 OC4 xxx1x: TIM1 OC5 xx1xx: TIM2 OC3 x1xxx: TIM3 OC3 1xxxx: TIM15 OC2.
Bit 30: Comparator 3 output status This bit is read-only. It reflects the level of the comparator 2 output after the polarity selector and blanking, as indicated in ..
Bit 31: COMP3_CSR register lock This bit is set by software and cleared by a system reset. It locks the whole content of the comparator 3 control register COMP3_CSR[31:0]:.
0x40023000: Cyclic redundancy check calculation unit
0/8 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | DR | ||||||||||||||||||||||||||||||||
0x4 | IDR | ||||||||||||||||||||||||||||||||
0x8 | CR | ||||||||||||||||||||||||||||||||
0x10 | INIT | ||||||||||||||||||||||||||||||||
0x14 | POL |
Independent data register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
Control register
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
0/4 fields covered.
Bit 0: RESET bit.
Bits 3-4: Polynomial size These bits control the size of the polynomial..
Bits 5-6: Reverse input data These bits control the reversal of the bit order of the input data.
Bit 7: Reverse output data This bit controls the reversal of the bit order of the output data..
0x40007400: DAC
6/48 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR | ||||||||||||||||||||||||||||||||
0x4 | SWTRGR | ||||||||||||||||||||||||||||||||
0x8 | DHR12R1 | ||||||||||||||||||||||||||||||||
0xc | DHR12L1 | ||||||||||||||||||||||||||||||||
0x10 | DHR8R1 | ||||||||||||||||||||||||||||||||
0x14 | DHR12R2 | ||||||||||||||||||||||||||||||||
0x18 | DHR12L2 | ||||||||||||||||||||||||||||||||
0x1c | DHR8R2 | ||||||||||||||||||||||||||||||||
0x20 | DHR12RD | ||||||||||||||||||||||||||||||||
0x24 | DHR12LD | ||||||||||||||||||||||||||||||||
0x28 | DHR8RD | ||||||||||||||||||||||||||||||||
0x2c | DOR1 | ||||||||||||||||||||||||||||||||
0x30 | DOR2 | ||||||||||||||||||||||||||||||||
0x34 | SR | ||||||||||||||||||||||||||||||||
0x38 | CCR | ||||||||||||||||||||||||||||||||
0x3c | MCR | ||||||||||||||||||||||||||||||||
0x40 | SHSR1 | ||||||||||||||||||||||||||||||||
0x44 | SHSR2 | ||||||||||||||||||||||||||||||||
0x48 | SHHR | ||||||||||||||||||||||||||||||||
0x4c | SHRR |
DAC control register
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CEN2
rw |
DMAUDRIE2
rw |
DMAEN2
rw |
MAMP2
rw |
WAVE2
rw |
TSEL2
rw |
TEN2
rw |
EN2
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CEN1
rw |
DMAUDRIE1
rw |
DMAEN1
rw |
MAMP1
rw |
WAVE1
rw |
TSEL1
rw |
TEN1
rw |
EN1
rw |
Bit 0: DAC channel1 enable This bit is set and cleared by software to enable/disable DAC channel1..
Bit 1: DAC channel1 trigger enable This bit is set and cleared by software to enable/disable DAC channel1 trigger. Note: When software trigger is selected, the transfer from the DAC_DHR1 register to the DAC_DOR1 register takes only one dac_pclk clock cycle..
Bits 2-5: DAC channel1 trigger selection These bits select the external event used to trigger DAC channel1 ... Refer to the trigger selection tables in for details on trigger configuration and mapping. Note: Only used if bit TEN1 = 1 (DAC channel1 trigger enabled)..
Bits 6-7: DAC channel1 noise/triangle wave generation enable These bits are set and cleared by software. 1x: Triangle wave generation enabled Only used if bit TEN1 = 1 (DAC channel1 trigger enabled)..
Bits 8-11: DAC channel1 mask/amplitude selector These bits are written by software to select mask in wave generation mode or amplitude in triangle generation mode. bigger or equal to 1011: Unmask bits[11:0] of LFSR/ triangle amplitude equal to 4095.
Bit 12: DAC channel1 DMA enable This bit is set and cleared by software..
Bit 13: DAC channel1 DMA Underrun Interrupt enable This bit is set and cleared by software..
Bit 14: DAC channel1 calibration enable This bit is set and cleared by software to enable/disable DAC channel1 calibration, it can be written only if bit EN1=0 into DAC_CR (the calibration mode can be entered/exit only when the DAC channel is disabled) Otherwise, the write operation is ignored..
Bit 16: DAC channel2 enable This bit is set and cleared by software to enable/disable DAC channel2. Note: These bits are available only on dual-channel DACs. Refer to implementation..
Bit 17: DAC channel2 trigger enable This bit is set and cleared by software to enable/disable DAC channel2 trigger Note: When software trigger is selected, the transfer from the DAC_DHR2 register to the DAC_DOR2 register takes only one dac_pclk clock cycle. These bits are available only on dual-channel DACs. Refer to implementation..
Bits 18-21: DAC channel2 trigger selection These bits select the external event used to trigger DAC channel2 ... Refer to the trigger selection tables in for details on trigger configuration and mapping. Note: Only used if bit TEN2 = 1 (DAC channel2 trigger enabled). These bits are available only on dual-channel DACs. Refer to implementation..
Bits 22-23: DAC channel2 noise/triangle wave generation enable These bits are set/reset by software. 1x: Triangle wave generation enabled Note: Only used if bit TEN2 = 1 (DAC channel2 trigger enabled) These bits are available only on dual-channel DACs. Refer to implementation..
Bits 24-27: DAC channel2 mask/amplitude selector These bits are written by software to select mask in wave generation mode or amplitude in triangle generation mode. bigger or equal to 1011: Unmask bits[11:0] of LFSR/ triangle amplitude equal to 4095 Note: These bits are available only on dual-channel DACs. Refer to implementation..
Bit 28: DAC channel2 DMA enable This bit is set and cleared by software. Note: This bit is available only on dual-channel DACs. Refer to implementation..
Bit 29: DAC channel2 DMA underrun interrupt enable This bit is set and cleared by software. Note: This bit is available only on dual-channel DACs. Refer to implementation..
Bit 30: DAC channel2 calibration enable This bit is set and cleared by software to enable/disable DAC channel2 calibration, it can be written only if EN2 bit is set to 0 into DAC_CR (the calibration mode can be entered/exit only when the DAC channel is disabled) Otherwise, the write operation is ignored. Note: This bit is available only on dual-channel DACs. Refer to implementation..
DAC software trigger register
Offset: 0x4, size: 32, reset: 0x00000000, access: write-only
0/2 fields covered.
Bit 0: DAC channel1 software trigger This bit is set by software to trigger the DAC in software trigger mode. Note: This bit is cleared by hardware (one dac_pclk clock cycle later) once the DAC_DHR1 register value has been loaded into the DAC_DOR1 register..
Bit 1: DAC channel2 software trigger This bit is set by software to trigger the DAC in software trigger mode. Note: This bit is cleared by hardware (one dac_pclk clock cycle later) once the DAC_DHR2 register value has been loaded into the DAC_DOR2 register. This bit is available only on dual-channel DACs. Refer to implementation..
DAC channel1 12-bit right-aligned data holding register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DACC1DHR
rw |
DAC channel1 12-bit left aligned data holding register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DACC1DHR
rw |
DAC channel1 8-bit right aligned data holding register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DACC1DHR
rw |
DAC channel2 12-bit right aligned data holding register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DACC2DHR
rw |
DAC channel2 12-bit left aligned data holding register
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DACC2DHR
rw |
DAC channel2 8-bit right-aligned data holding register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DACC2DHR
rw |
Dual DAC 12-bit right-aligned data holding register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
DUAL DAC 12-bit left aligned data holding register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
DUAL DAC 8-bit right aligned data holding register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
DAC channel1 data output register
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DACC1DOR
r |
DAC channel2 data output register
Offset: 0x30, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DACC2DOR
r |
DAC status register
Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified
4/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BWST2
r |
CAL_FLAG2
r |
DMAUDR2
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BWST1
r |
CAL_FLAG1
r |
DMAUDR1
rw |
Bit 13: DAC channel1 DMA underrun flag This bit is set by hardware and cleared by software (by writing it to 1)..
Bit 14: DAC channel1 calibration offset status This bit is set and cleared by hardware.
Bit 15: DAC channel1 busy writing sample time flag This bit is systematically set just after Sample and hold mode enable and is set each time the software writes the register DAC_SHSR1, It is cleared by hardware when the write operation of DAC_SHSR1 is complete. (It takes about 3 LSI periods of synchronization)..
Bit 29: DAC channel2 DMA underrun flag This bit is set by hardware and cleared by software (by writing it to 1). Note: This bit is available only on dual-channel DACs. Refer to implementation..
Bit 30: DAC channel2 calibration offset status This bit is set and cleared by hardware Note: This bit is available only on dual-channel DACs. Refer to implementation..
Bit 31: DAC channel2 busy writing sample time flag This bit is systematically set just after Sample and hold mode enable. It is set each time the software writes the register DAC_SHSR2, It is cleared by hardware when the write operation of DAC_SHSR2 is complete. (It takes about 3 LSI periods of synchronization). Note: This bit is available only on dual-channel DACs. Refer to implementation..
DAC calibration control register
Offset: 0x38, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
DAC mode control register
Offset: 0x3c, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MODE2
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MODE1
rw |
Bits 0-2: DAC channel1 mode These bits can be written only when the DAC is disabled and not in the calibration mode (when bit EN1=0 and bit CEN1 =0 in the DAC_CR register). If EN1=1 or CEN1 =1 the write operation is ignored. They can be set and cleared by software to select the DAC channel1 mode: DAC channel1 in Normal mode DAC channel1 in sample & hold mode Note: This register can be modified only when EN1=0..
Bits 16-18: DAC channel2 mode These bits can be written only when the DAC is disabled and not in the calibration mode (when bit EN2=0 and bit CEN2 =0 in the DAC_CR register). If EN2=1 or CEN2 =1 the write operation is ignored. They can be set and cleared by software to select the DAC channel2 mode: DAC channel2 in Normal mode DAC channel2 in Sample and hold mode Note: This register can be modified only when EN2=0. Refer to for the availability of DAC channel2..
DAC Sample and Hold sample time register 1
Offset: 0x40, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TSAMPLE1
rw |
Bits 0-9: DAC channel1 sample time (only valid in Sample and hold mode) These bits can be written when the DAC channel1 is disabled or also during normal operation. in the latter case, the write can be done only when BWST1 of DAC_SR register is low, If BWST1=1, the write operation is ignored..
DAC Sample and Hold sample time register 2
Offset: 0x44, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TSAMPLE2
rw |
Bits 0-9: DAC channel2 sample time (only valid in Sample and hold mode) These bits can be written when the DAC channel2 is disabled or also during normal operation. in the latter case, the write can be done only when BWST2 of DAC_SR register is low, if BWST2=1, the write operation is ignored..
DAC Sample and Hold hold time register
Offset: 0x48, size: 32, reset: 0x00010001, access: read-write
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
THOLD2
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
THOLD1
rw |
Bits 0-9: DAC channel1 hold time (only valid in Sample and hold mode) Hold time= (THOLD[9:0]) x LSI clock period Note: This register can be modified only when EN1=0..
Bits 16-25: DAC channel2 hold time (only valid in Sample and hold mode). Hold time= (THOLD[9:0]) x LSI clock period Note: This register can be modified only when EN2=0. These bits are available only on dual-channel DACs. Refer to implementation..
DAC Sample and Hold refresh time register
Offset: 0x4c, size: 32, reset: 0x00010001, access: read-write
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TREFRESH2
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TREFRESH1
rw |
Bits 0-7: DAC channel1 refresh time (only valid in Sample and hold mode) Refresh time= (TREFRESH[7:0]) x LSI clock period Note: This register can be modified only when EN1=0..
Bits 16-23: DAC channel2 refresh time (only valid in Sample and hold mode) Refresh time= (TREFRESH[7:0]) x LSI clock period Note: This register can be modified only when EN2=0. These bits are available only on dual-channel DACs. Refer to implementation..
0x40015800: Debug support
2/19 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | IDCODE | ||||||||||||||||||||||||||||||||
0x4 | CR | ||||||||||||||||||||||||||||||||
0x8 | APB_FZ1 | ||||||||||||||||||||||||||||||||
0xc | APB_FZ2 |
MCU Device ID Code Register
Offset: 0x0, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
DBG configuration register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DBG_STANDBY
rw |
DBG_STOP
rw |
DBG APB freeze register 1
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/10 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DBG_LPTIM1_STOP
rw |
DBG_LPTIM2_STOP
rw |
DBG_I2C1_SMBUS_TIMEOUT
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DBG_IWDG_STOP
rw |
DBG_WWDG_STOP
rw |
DBG_RTC_STOP
rw |
DBG_TIM7_STOP
rw |
DBG_TIM6_STOP
rw |
DBG_TIM3_STOP
rw |
DBG_TIM2_STOP
rw |
Bit 0: Clocking of TIM2 counter when the core is halted This bit enables/disables the clock to the counter of TIM2 when the core is halted:.
Bit 1: Clocking of TIM3 counter when the core is halted This bit enables/disables the clock to the counter of TIM3 when the core is halted:.
Bit 4: Clocking of TIM6 counter when the core is halted This bit enables/disables the clock to the counter of TIM6 when the core is halted:.
Bit 5: Clocking of TIM7 counter when the core is halted. This bit enables/disables the clock to the counter of ITIM7 when the core is halted:.
Bit 10: Clocking of RTC counter when the core is halted This bit enables/disables the clock to the counter of RTC when the core is halted:.
Bit 11: Clocking of WWDG counter when the core is halted This bit enables/disables the clock to the counter of WWDG when the core is halted:.
Bit 12: Clocking of IWDG counter when the core is halted This bit enables/disables the clock to the counter of IWDG when the core is halted:.
Bit 21: SMBUS timeout when core is halted.
Bit 30: Clocking of LPTIMER2 counter when the core is halted This bit enables/disables the clock to the counter of LPTIMER2 when the core is halted:.
Bit 31: Clocking of LPTIMER1 counter when the core is halted This bit enables/disables the clock to the counter of LPTIMER1 when the core is halted:.
DBG APB freeze register 2
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DBG_TIM17_STOP
rw |
DBG_TIM16_STOP
rw |
DBG_TIM15_STOP
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DBG_TIM14_STOP
rw |
DBG_TIM1_STOP
rw |
Bit 11: Clocking of TIM1 counter when the core is halted This bit enables/disables the clock to the counter of TIM1 when the core is halted:.
Bit 15: Clocking of TIM14 counter when the core is halted This bit enables/disables the clock to the counter of TIM14 when the core is halted:.
Bit 16: Clocking of TIM15 counter when the core is halted This bit enables/disables the clock to the counter of TIM15 when the core is halted: Only available on STM32G071xx and STM32G081xx, reserved on STM32G031xx and STM32G041xx..
Bit 17: Clocking of TIM16 counter when the core is halted This bit enables/disables the clock to the counter of TIM16 when the core is halted:.
Bit 18: Clocking of TIM17 counter when the core is halted This bit enables/disables the clock to the counter of TIM17 when the core is halted:.
0x40020000: Direct memory access controller
147/161 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | ISR | ||||||||||||||||||||||||||||||||
0x4 | IFCR | ||||||||||||||||||||||||||||||||
0x8 | CR [1] | ||||||||||||||||||||||||||||||||
0xc | NDTR [1] | ||||||||||||||||||||||||||||||||
0x10 | PAR [1] | ||||||||||||||||||||||||||||||||
0x14 | MAR [1] | ||||||||||||||||||||||||||||||||
0x1c | CR [2] | ||||||||||||||||||||||||||||||||
0x20 | NDTR [2] | ||||||||||||||||||||||||||||||||
0x24 | PAR [2] | ||||||||||||||||||||||||||||||||
0x28 | MAR [2] | ||||||||||||||||||||||||||||||||
0x30 | CR [3] | ||||||||||||||||||||||||||||||||
0x34 | NDTR [3] | ||||||||||||||||||||||||||||||||
0x38 | PAR [3] | ||||||||||||||||||||||||||||||||
0x3c | MAR [3] | ||||||||||||||||||||||||||||||||
0x44 | CR [4] | ||||||||||||||||||||||||||||||||
0x48 | NDTR [4] | ||||||||||||||||||||||||||||||||
0x4c | PAR [4] | ||||||||||||||||||||||||||||||||
0x50 | MAR [4] | ||||||||||||||||||||||||||||||||
0x58 | CR [5] | ||||||||||||||||||||||||||||||||
0x5c | NDTR [5] | ||||||||||||||||||||||||||||||||
0x60 | PAR [5] | ||||||||||||||||||||||||||||||||
0x64 | MAR [5] | ||||||||||||||||||||||||||||||||
0x6c | CR [6] | ||||||||||||||||||||||||||||||||
0x70 | NDTR [6] | ||||||||||||||||||||||||||||||||
0x74 | PAR [6] | ||||||||||||||||||||||||||||||||
0x78 | MAR [6] | ||||||||||||||||||||||||||||||||
0x80 | CR [7] | ||||||||||||||||||||||||||||||||
0x84 | NDTR [7] | ||||||||||||||||||||||||||||||||
0x88 | PAR [7] | ||||||||||||||||||||||||||||||||
0x8c | MAR [7] |
DMA interrupt status register
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
28/28 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TEIF[7]
r |
HTIF[7]
r |
TCIF[7]
r |
GIF[7]
r |
TEIF[6]
r |
HTIF[6]
r |
TCIF[6]
r |
GIF[6]
r |
TEIF[5]
r |
HTIF[5]
r |
TCIF[5]
r |
GIF[5]
r |
||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TEIF[4]
r |
HTIF[4]
r |
TCIF[4]
r |
GIF[4]
r |
TEIF[3]
r |
HTIF[3]
r |
TCIF[3]
r |
GIF[3]
r |
TEIF[2]
r |
HTIF[2]
r |
TCIF[2]
r |
GIF[2]
r |
TEIF[1]
r |
HTIF[1]
r |
TCIF[1]
r |
GIF[1]
r |
Bit 0: Channel 1 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 1: Channel 1 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 2: Channel 1 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 3: Channel 1 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 4: Channel 2 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 5: Channel 2 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 6: Channel 2 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 7: Channel 2 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 8: Channel 3 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 9: Channel 3 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 10: Channel 3 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 11: Channel 3 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 12: Channel 4 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 13: Channel 4 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 14: Channel 4 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 15: Channel 4 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 16: Channel 5 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 17: Channel 5 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 18: Channel 5 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 19: Channel 5 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 20: Channel 6 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 21: Channel 6 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 22: Channel 6 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 23: Channel 6 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 24: Channel 7 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 25: Channel 7 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 26: Channel 7 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 27: Channel 7 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
DMA interrupt flag clear register
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
28/28 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTEIF[7]
w |
CHTIF[7]
w |
CTCIF[7]
w |
CGIF[7]
w |
CTEIF[6]
w |
CHTIF[6]
w |
CTCIF[6]
w |
CGIF[6]
w |
CTEIF[5]
w |
CHTIF[5]
w |
CTCIF[5]
w |
CGIF[5]
w |
||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTEIF[4]
w |
CHTIF[4]
w |
CTCIF[4]
w |
CGIF[4]
w |
CTEIF[3]
w |
CHTIF[3]
w |
CTCIF[3]
w |
CGIF[3]
w |
CTEIF[2]
w |
CHTIF[2]
w |
CTCIF[2]
w |
CGIF[2]
w |
CTEIF[1]
w |
CHTIF[1]
w |
CTCIF[1]
w |
CGIF[1]
w |
Bit 0: Channel 1 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 1: Channel 1 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 2: Channel 1 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 3: Channel 1 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 4: Channel 2 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 5: Channel 2 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 6: Channel 2 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 7: Channel 2 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 8: Channel 3 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 9: Channel 3 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 10: Channel 3 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 11: Channel 3 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 12: Channel 4 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 13: Channel 4 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 14: Channel 4 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 15: Channel 4 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 16: Channel 5 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 17: Channel 5 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 18: Channel 5 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 19: Channel 5 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 20: Channel 6 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 21: Channel 6 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 22: Channel 6 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 23: Channel 6 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 24: Channel 7 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 25: Channel 7 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 26: Channel 7 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 27: Channel 7 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
DMA channel 1 configuration register
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x5c, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x60, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x64, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x6c, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x70, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x74, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x78, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x80, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x84, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x88, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x8c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
0x40020400: Direct memory access controller
105/115 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | ISR | ||||||||||||||||||||||||||||||||
0x4 | IFCR | ||||||||||||||||||||||||||||||||
0x8 | CR [1] | ||||||||||||||||||||||||||||||||
0xc | NDTR [1] | ||||||||||||||||||||||||||||||||
0x10 | PAR [1] | ||||||||||||||||||||||||||||||||
0x14 | MAR [1] | ||||||||||||||||||||||||||||||||
0x1c | CR [2] | ||||||||||||||||||||||||||||||||
0x20 | NDTR [2] | ||||||||||||||||||||||||||||||||
0x24 | PAR [2] | ||||||||||||||||||||||||||||||||
0x28 | MAR [2] | ||||||||||||||||||||||||||||||||
0x30 | CR [3] | ||||||||||||||||||||||||||||||||
0x34 | NDTR [3] | ||||||||||||||||||||||||||||||||
0x38 | PAR [3] | ||||||||||||||||||||||||||||||||
0x3c | MAR [3] | ||||||||||||||||||||||||||||||||
0x44 | CR [4] | ||||||||||||||||||||||||||||||||
0x48 | NDTR [4] | ||||||||||||||||||||||||||||||||
0x4c | PAR [4] | ||||||||||||||||||||||||||||||||
0x50 | MAR [4] | ||||||||||||||||||||||||||||||||
0x58 | CR [5] | ||||||||||||||||||||||||||||||||
0x5c | NDTR [5] | ||||||||||||||||||||||||||||||||
0x60 | PAR [5] | ||||||||||||||||||||||||||||||||
0x64 | MAR [5] |
DMA interrupt status register
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TEIF[5]
r |
HTIF[5]
r |
TCIF[5]
r |
GIF[5]
r |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TEIF[4]
r |
HTIF[4]
r |
TCIF[4]
r |
GIF[4]
r |
TEIF[3]
r |
HTIF[3]
r |
TCIF[3]
r |
GIF[3]
r |
TEIF[2]
r |
HTIF[2]
r |
TCIF[2]
r |
GIF[2]
r |
TEIF[1]
r |
HTIF[1]
r |
TCIF[1]
r |
GIF[1]
r |
Bit 0: Channel 1 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 1: Channel 1 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 2: Channel 1 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 3: Channel 1 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 4: Channel 2 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 5: Channel 2 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 6: Channel 2 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 7: Channel 2 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 8: Channel 3 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 9: Channel 3 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 10: Channel 3 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 11: Channel 3 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 12: Channel 4 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 13: Channel 4 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 14: Channel 4 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 15: Channel 4 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
Bit 16: Channel 5 Global interrupt flag.
Allowed values:
0: NoEvent: No transfer error, half event, complete event
1: Event: A transfer error, half event or complete event has occured
Bit 17: Channel 5 Transfer Complete flag.
Allowed values:
0: NotComplete: No transfer complete event
1: Complete: A transfer complete event has occured
Bit 18: Channel 5 Half Transfer Complete flag.
Allowed values:
0: NotHalf: No half transfer event
1: Half: A half transfer event has occured
Bit 19: Channel 5 Transfer Error flag.
Allowed values:
0: NoError: No transfer error
1: Error: A transfer error has occured
DMA interrupt flag clear register
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTEIF[5]
w |
CHTIF[5]
w |
CTCIF[5]
w |
CGIF[5]
w |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTEIF[4]
w |
CHTIF[4]
w |
CTCIF[4]
w |
CGIF[4]
w |
CTEIF[3]
w |
CHTIF[3]
w |
CTCIF[3]
w |
CGIF[3]
w |
CTEIF[2]
w |
CHTIF[2]
w |
CTCIF[2]
w |
CGIF[2]
w |
CTEIF[1]
w |
CHTIF[1]
w |
CTCIF[1]
w |
CGIF[1]
w |
Bit 0: Channel 1 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 1: Channel 1 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 2: Channel 1 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 3: Channel 1 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 4: Channel 2 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 5: Channel 2 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 6: Channel 2 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 7: Channel 2 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 8: Channel 3 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 9: Channel 3 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 10: Channel 3 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 11: Channel 3 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 12: Channel 4 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 13: Channel 4 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 14: Channel 4 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 15: Channel 4 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
Bit 16: Channel 5 Global interrupt clear.
Allowed values:
1: Clear: Clears the GIF, TEIF, HTIF, TCIF flags in the ISR register
Bit 17: Channel 5 Transfer Complete clear.
Allowed values:
1: Clear: Clears the TCIF flag in the ISR register
Bit 18: Channel 5 Half Transfer clear.
Allowed values:
1: Clear: Clears the HTIF flag in the ISR register
Bit 19: Channel 5 Transfer Error clear.
Allowed values:
1: Clear: Clears the TEIF flag in the ISR register
DMA channel 1 configuration register
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 configuration register
Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEM2MEM
rw |
PL
rw |
MSIZE
rw |
PSIZE
rw |
MINC
rw |
PINC
rw |
CIRC
rw |
DIR
rw |
TEIE
rw |
HTIE
rw |
TCIE
rw |
EN
rw |
Bit 0: channel enable When a channel transfer error occurs, this bit is cleared by hardware. It can not be set again by software (channel x re-activated) until the TEIFx bit of the DMA_ISR register is cleared (by setting the CTEIFx bit of the DMA_IFCR register). Note: this bit is set and cleared by software..
Allowed values:
0: Disabled: Channel disabled
1: Enabled: Channel enabled
Bit 1: transfer complete interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 2: half transfer interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Half Transfer interrupt disabled
1: Enabled: Half Transfer interrupt enabled
Bit 3: transfer error interrupt enable Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Transfer Error interrupt disabled
1: Enabled: Transfer Error interrupt enabled
Bit 4: data transfer direction This bit must be set only in memory-to-peripheral and peripheral-to-memory modes. Source attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Destination attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Destination attributes are defined by PSIZE and PINC, plus the DMA_CPARx register. This is still valid in a memory-to-memory mode. Source attributes are defined by MSIZE and MINC, plus the DMA_CMARx register. This is still valid in a peripheral-to-peripheral mode. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: FromPeripheral: Read from peripheral
1: FromMemory: Read from memory
Bit 5: circular mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Circular buffer disabled
1: Enabled: Circular buffer enabled
Bit 6: peripheral increment mode Defines the increment mode for each DMA transfer to the identified peripheral. n memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bit 7: memory increment mode Defines the increment mode for each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Increment mode disabled
1: Enabled: Increment mode enabled
Bits 8-9: peripheral size Defines the data size of each DMA transfer to the identified peripheral. In memory-to-memory mode, this field identifies the memory destination if DIR=1 and the memory source if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral destination if DIR=1 and the peripheral source if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 10-11: memory size Defines the data size of each DMA transfer to the identified memory. In memory-to-memory mode, this field identifies the memory source if DIR=1 and the memory destination if DIR=0. In peripheral-to-peripheral mode, this field identifies the peripheral source if DIR=1 and the peripheral destination if DIR=0. Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Bits8: 8-bit size
1: Bits16: 16-bit size
2: Bits32: 32-bit size
Bits 12-13: priority level Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Low: Low priority
1: Medium: Medium priority
2: High: High priority
3: VeryHigh: Very high priority
Bit 14: memory-to-memory mode Note: this bit is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values:
0: Disabled: Memory to memory mode disabled
1: Enabled: Memory to memory mode enabled
DMA channel 1 number of data to transfer register
Offset: 0x5c, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NDT
rw |
Bits 0-15: number of data to transfer (0 to 216-1) This field is updated by hardware when the channel is enabled: It is decremented after each single DMA 'read followed by write' transfer, indicating the remaining amount of data items to transfer. It is kept at zero when the programmed amount of data to transfer is reached, if the channel is not in circular mode (CIRC=0 in the DMA_CCRx register). It is reloaded automatically by the previously programmed value, when the transfer is complete, if the channel is in circular mode (CIRC=1). If this field is zero, no transfer can be served whatever the channel status (enabled or not). Note: this field is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is read-only when the channel is enabled (EN=1)..
Allowed values: 0x0-0xffff
DMA channel 1 peripheral address register
Offset: 0x60, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the peripheral data register from/to which the data will be read/written. When PSIZE[1:0]=01 (16 bits), bit 0 of PA[31:0] is ignored. Access is automatically aligned to a half-word address. When PSIZE=10 (32 bits), bits 1 and 0 of PA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory destination address if DIR=1 and the memory source address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral destination address DIR=1 and the peripheral source address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
DMA channel 1 memory address register
Offset: 0x64, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: peripheral address It contains the base address of the memory from/to which the data will be read/written. When MSIZE[1:0]=01 (16 bits), bit 0 of MA[31:0] is ignored. Access is automatically aligned to a half-word address. When MSIZE=10 (32 bits), bits 1 and 0 of MA[31:0] are ignored. Access is automatically aligned to a word address. In memory-to-memory mode, this register identifies the memory source address if DIR=1 and the memory destination address if DIR=0. In peripheral-to-peripheral mode, this register identifies the peripheral source address DIR=1 and the peripheral destination address if DIR=0. Note: this register is set and cleared by software. It must not be written when the channel is enabled (EN = 1). It is not read-only when the channel is enabled (EN=1)..
0x40020800: DMAMUX
11/91 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CCR[0] | ||||||||||||||||||||||||||||||||
0x4 | CCR[1] | ||||||||||||||||||||||||||||||||
0x8 | CCR[2] | ||||||||||||||||||||||||||||||||
0xc | CCR[3] | ||||||||||||||||||||||||||||||||
0x10 | CCR[4] | ||||||||||||||||||||||||||||||||
0x14 | CCR[5] | ||||||||||||||||||||||||||||||||
0x18 | CCR[6] | ||||||||||||||||||||||||||||||||
0x80 | CSR | ||||||||||||||||||||||||||||||||
0x84 | CFR | ||||||||||||||||||||||||||||||||
0x100 | RGCR[0] | ||||||||||||||||||||||||||||||||
0x104 | RGCR[1] | ||||||||||||||||||||||||||||||||
0x108 | RGCR[2] | ||||||||||||||||||||||||||||||||
0x10c | RGCR[3] | ||||||||||||||||||||||||||||||||
0x140 | RGSR | ||||||||||||||||||||||||||||||||
0x144 | RGCFR |
DMA Multiplexer Channel 0 Control register
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SYNC_ID
rw |
NBREQ
rw |
SPOL
rw |
SE
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EGE
rw |
SOIE
rw |
DMAREQ_ID
rw |
Bits 0-5: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..
Bit 8: Synchronization overrun interrupt enable.
Bit 9: Event generation enable.
Bit 16: Synchronization enable.
Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.
Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field shall only be written when both SE and EGE bits are low..
Bits 24-28: Synchronization identification Selects the synchronization input (see inputs to resources STM32G0)..
DMA Multiplexer Channel 1 Control register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SYNC_ID
rw |
NBREQ
rw |
SPOL
rw |
SE
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EGE
rw |
SOIE
rw |
DMAREQ_ID
rw |
Bits 0-5: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..
Bit 8: Synchronization overrun interrupt enable.
Bit 9: Event generation enable.
Bit 16: Synchronization enable.
Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.
Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field shall only be written when both SE and EGE bits are low..
Bits 24-28: Synchronization identification Selects the synchronization input (see inputs to resources STM32G0)..
DMA Multiplexer Channel 2 Control register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SYNC_ID
rw |
NBREQ
rw |
SPOL
rw |
SE
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EGE
rw |
SOIE
rw |
DMAREQ_ID
rw |
Bits 0-5: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..
Bit 8: Synchronization overrun interrupt enable.
Bit 9: Event generation enable.
Bit 16: Synchronization enable.
Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.
Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field shall only be written when both SE and EGE bits are low..
Bits 24-28: Synchronization identification Selects the synchronization input (see inputs to resources STM32G0)..
DMA Multiplexer Channel 3 Control register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SYNC_ID
rw |
NBREQ
rw |
SPOL
rw |
SE
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EGE
rw |
SOIE
rw |
DMAREQ_ID
rw |
Bits 0-5: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..
Bit 8: Synchronization overrun interrupt enable.
Bit 9: Event generation enable.
Bit 16: Synchronization enable.
Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.
Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field shall only be written when both SE and EGE bits are low..
Bits 24-28: Synchronization identification Selects the synchronization input (see inputs to resources STM32G0)..
DMA Multiplexer Channel 4 Control register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SYNC_ID
rw |
NBREQ
rw |
SPOL
rw |
SE
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EGE
rw |
SOIE
rw |
DMAREQ_ID
rw |
Bits 0-5: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..
Bit 8: Synchronization overrun interrupt enable.
Bit 9: Event generation enable.
Bit 16: Synchronization enable.
Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.
Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field shall only be written when both SE and EGE bits are low..
Bits 24-28: Synchronization identification Selects the synchronization input (see inputs to resources STM32G0)..
DMA Multiplexer Channel 5 Control register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SYNC_ID
rw |
NBREQ
rw |
SPOL
rw |
SE
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EGE
rw |
SOIE
rw |
DMAREQ_ID
rw |
Bits 0-5: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..
Bit 8: Synchronization overrun interrupt enable.
Bit 9: Event generation enable.
Bit 16: Synchronization enable.
Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.
Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field shall only be written when both SE and EGE bits are low..
Bits 24-28: Synchronization identification Selects the synchronization input (see inputs to resources STM32G0)..
DMA Multiplexer Channel 6 Control register
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SYNC_ID
rw |
NBREQ
rw |
SPOL
rw |
SE
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EGE
rw |
SOIE
rw |
DMAREQ_ID
rw |
Bits 0-5: DMA request identification Selects the input DMA request. See the DMAMUX table about assignments of multiplexer inputs to resources..
Bit 8: Synchronization overrun interrupt enable.
Bit 9: Event generation enable.
Bit 16: Synchronization enable.
Bits 17-18: Synchronization polarity Defines the edge polarity of the selected synchronization input:.
Bits 19-23: Number of DMA requests minus 1 to forward Defines the number of DMA requests to forward to the DMA controller after a synchronization event, and/or the number of DMA requests before an output event is generated. This field shall only be written when both SE and EGE bits are low..
Bits 24-28: Synchronization identification Selects the synchronization input (see inputs to resources STM32G0)..
DMAMUX request line multiplexer interrupt channel status register
Offset: 0x80, size: 32, reset: 0x00000000, access: read-only
7/7 fields covered.
Bit 0: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..
Bit 1: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..
Bit 2: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..
Bit 3: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..
Bit 4: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..
Bit 5: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..
Bit 6: Synchronization overrun event flag The flag is set when a synchronization event occurs on a DMA request line multiplexer channel x, while the DMA request counter value is lower than NBREQ. The flag is cleared by writing 1 to the corresponding CSOFx bit in DMAMUX_CFR register..
DMAMUX request line multiplexer interrupt clear flag register
Offset: 0x84, size: 32, reset: 0x00000000, access: write-only
0/7 fields covered.
Bit 0: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..
Bit 1: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..
Bit 2: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..
Bit 3: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..
Bit 4: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..
Bit 5: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..
Bit 6: Clear synchronization overrun event flag Writing 1 in each bit clears the corresponding overrun flag SOFx in the DMAMUX_CSR register..
DMAMUX request generator channel x configuration register
Offset: 0x100, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GNBREQ
rw |
GPOL
rw |
GE
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OIE
rw |
SIG_ID
rw |
Bits 0-4: Signal identification Selects the DMA request trigger input used for the channel x of the DMA request generator.
Bit 8: Trigger overrun interrupt enable.
Bit 16: DMA request generator channel x enable.
Bits 17-18: DMA request generator trigger polarity Defines the edge polarity of the selected trigger input.
Bits 19-23: Number of DMA requests to be generated (minus 1) Defines the number of DMA requests to be generated after a trigger event. The actual number of generated DMA requests is GNBREQ +1. Note: This field shall only be written when GE bit is disabled..
DMAMUX request generator channel x configuration register
Offset: 0x104, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GNBREQ
rw |
GPOL
rw |
GE
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OIE
rw |
SIG_ID
rw |
Bits 0-4: Signal identification Selects the DMA request trigger input used for the channel x of the DMA request generator.
Bit 8: Trigger overrun interrupt enable.
Bit 16: DMA request generator channel x enable.
Bits 17-18: DMA request generator trigger polarity Defines the edge polarity of the selected trigger input.
Bits 19-23: Number of DMA requests to be generated (minus 1) Defines the number of DMA requests to be generated after a trigger event. The actual number of generated DMA requests is GNBREQ +1. Note: This field shall only be written when GE bit is disabled..
DMAMUX request generator channel x configuration register
Offset: 0x108, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GNBREQ
rw |
GPOL
rw |
GE
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OIE
rw |
SIG_ID
rw |
Bits 0-4: Signal identification Selects the DMA request trigger input used for the channel x of the DMA request generator.
Bit 8: Trigger overrun interrupt enable.
Bit 16: DMA request generator channel x enable.
Bits 17-18: DMA request generator trigger polarity Defines the edge polarity of the selected trigger input.
Bits 19-23: Number of DMA requests to be generated (minus 1) Defines the number of DMA requests to be generated after a trigger event. The actual number of generated DMA requests is GNBREQ +1. Note: This field shall only be written when GE bit is disabled..
DMAMUX request generator channel x configuration register
Offset: 0x10c, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GNBREQ
rw |
GPOL
rw |
GE
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OIE
rw |
SIG_ID
rw |
Bits 0-4: Signal identification Selects the DMA request trigger input used for the channel x of the DMA request generator.
Bit 8: Trigger overrun interrupt enable.
Bit 16: DMA request generator channel x enable.
Bits 17-18: DMA request generator trigger polarity Defines the edge polarity of the selected trigger input.
Bits 19-23: Number of DMA requests to be generated (minus 1) Defines the number of DMA requests to be generated after a trigger event. The actual number of generated DMA requests is GNBREQ +1. Note: This field shall only be written when GE bit is disabled..
DMAMUX request generator interrupt status register
Offset: 0x140, size: 32, reset: 0x00000000, access: read-only
4/4 fields covered.
Bit 0: Trigger overrun event flag The flag is set when a new trigger event occurs on DMA request generator channel x, before the request counter underrun (the internal request counter programmed via the GNBREQ field of the DMAMUX_RGxCR register). The flag is cleared by writing 1 to the corresponding COFx bit in the DMAMUX_RGCFR register..
Bit 1: Trigger overrun event flag The flag is set when a new trigger event occurs on DMA request generator channel x, before the request counter underrun (the internal request counter programmed via the GNBREQ field of the DMAMUX_RGxCR register). The flag is cleared by writing 1 to the corresponding COFx bit in the DMAMUX_RGCFR register..
Bit 2: Trigger overrun event flag The flag is set when a new trigger event occurs on DMA request generator channel x, before the request counter underrun (the internal request counter programmed via the GNBREQ field of the DMAMUX_RGxCR register). The flag is cleared by writing 1 to the corresponding COFx bit in the DMAMUX_RGCFR register..
Bit 3: Trigger overrun event flag The flag is set when a new trigger event occurs on DMA request generator channel x, before the request counter underrun (the internal request counter programmed via the GNBREQ field of the DMAMUX_RGxCR register). The flag is cleared by writing 1 to the corresponding COFx bit in the DMAMUX_RGCFR register..
DMAMUX request generator interrupt clear flag register
Offset: 0x144, size: 32, reset: 0x00000000, access: write-only
0/4 fields covered.
Bit 0: Clear trigger overrun event flag Writing 1 in each bit clears the corresponding overrun flag OFx in the DMAMUX_RGSR register..
Bit 1: Clear trigger overrun event flag Writing 1 in each bit clears the corresponding overrun flag OFx in the DMAMUX_RGSR register..
Bit 2: Clear trigger overrun event flag Writing 1 in each bit clears the corresponding overrun flag OFx in the DMAMUX_RGSR register..
Bit 3: Clear trigger overrun event flag Writing 1 in each bit clears the corresponding overrun flag OFx in the DMAMUX_RGSR register..
0x40021800: External interrupt/event controller
190/190 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | RTSR1 | ||||||||||||||||||||||||||||||||
0x4 | FTSR1 | ||||||||||||||||||||||||||||||||
0x8 | SWIER1 | ||||||||||||||||||||||||||||||||
0xc | RPR1 | ||||||||||||||||||||||||||||||||
0x10 | FPR1 | ||||||||||||||||||||||||||||||||
0x28 | RTSR2 | ||||||||||||||||||||||||||||||||
0x2c | FTSR2 | ||||||||||||||||||||||||||||||||
0x30 | SWIER2 | ||||||||||||||||||||||||||||||||
0x34 | RPR2 | ||||||||||||||||||||||||||||||||
0x38 | FPR2 | ||||||||||||||||||||||||||||||||
0x60 | EXTICR1 | ||||||||||||||||||||||||||||||||
0x64 | EXTICR2 | ||||||||||||||||||||||||||||||||
0x68 | EXTICR3 | ||||||||||||||||||||||||||||||||
0x6c | EXTICR4 | ||||||||||||||||||||||||||||||||
0x80 | IMR1 | ||||||||||||||||||||||||||||||||
0x84 | EMR1 | ||||||||||||||||||||||||||||||||
0x90 | IMR2 | ||||||||||||||||||||||||||||||||
0x94 | EMR2 |
EXTI rising trigger selection register
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RT20
rw |
RT18
rw |
RT17
rw |
RT16
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RT15
rw |
RT14
rw |
RT13
rw |
RT12
rw |
RT11
rw |
RT10
rw |
RT9
rw |
RT8
rw |
RT7
rw |
RT6
rw |
RT5
rw |
RT4
rw |
RT3
rw |
RT2
rw |
RT1
rw |
RT0
rw |
Bit 0: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 1: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 2: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 3: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 4: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 5: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 6: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 7: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 8: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 9: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 10: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 11: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 12: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 13: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 14: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 15: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 16: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 17: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 18: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
Bit 20: Rising trigger event configuration bit of Configurable Event line.
Allowed values:
0: Disabled: Rising edge trigger is disabled
1: Enabled: Rising edge trigger is enabled
EXTI falling trigger selection register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FT20
rw |
FT18
rw |
FT17
rw |
FT16
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
FT15
rw |
FT14
rw |
FT13
rw |
FT12
rw |
FT11
rw |
FT10
rw |
FT9
rw |
FT8
rw |
FT7
rw |
FT6
rw |
FT5
rw |
FT4
rw |
FT3
rw |
FT2
rw |
FT1
rw |
FT0
rw |
Bit 0: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 1: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 2: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 3: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 4: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 5: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 6: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 7: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 8: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 9: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 10: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 11: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 12: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 13: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 14: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 15: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 16: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 17: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 18: Falling trigger event configuration bit of configurable line.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
Bit 20: Rising trigger event configuration bit of Configurable Event input.
Allowed values:
0: Disabled: Falling edge trigger is disabled
1: Enabled: Falling edge trigger is enabled
EXTI software interrupt event register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SWI20
rw |
SWI18
rw |
SWI17
rw |
SWI16
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SWI15
rw |
SWI14
rw |
SWI13
rw |
SWI12
rw |
SWI11
rw |
SWI10
rw |
SWI9
rw |
SWI8
rw |
SWI7
rw |
SWI6
rw |
SWI5
rw |
SWI4
rw |
SWI3
rw |
SWI2
rw |
SWI1
rw |
SWI0
rw |
Bit 0: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 1: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 2: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 3: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 4: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 5: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 6: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 7: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 8: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 9: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 10: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 11: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 12: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 13: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 14: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 15: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 16: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 17: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 18: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
Bit 20: Software rising edge event trigger on line.
Allowed values:
1: Pend: Generates an interrupt request
EXTI rising edge pending register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RPIF20
rw |
RPIF18
rw |
RPIF17
rw |
RPIF16
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RPIF15
rw |
RPIF14
rw |
RPIF13
rw |
RPIF12
rw |
RPIF11
rw |
RPIF10
rw |
RPIF9
rw |
RPIF8
rw |
RPIF7
rw |
RPIF6
rw |
RPIF5
rw |
RPIF4
rw |
RPIF3
rw |
RPIF2
rw |
RPIF1
rw |
RPIF0
rw |
Bit 0: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 1: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 2: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 3: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 4: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 5: configurable event inputs x rising edge Pending bit.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 6: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 7: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 8: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 9: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 10: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 11: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 12: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 13: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 14: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 15: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 16: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 17: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 18: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 20: Rising edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
EXTI falling edge pending register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FPIF20
rw |
FPIF18
rw |
FPIF17
rw |
FPIF16
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
FPIF15
rw |
FPIF14
rw |
FPIF13
rw |
FPIF12
rw |
FPIF11
rw |
FPIF10
rw |
FPIF9
rw |
FPIF8
rw |
FPIF7
rw |
FPIF6
rw |
FPIF5
rw |
FPIF4
rw |
FPIF3
rw |
FPIF2
rw |
FPIF1
rw |
FPIF0
rw |
Bit 0: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 1: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 2: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 3: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 4: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 5: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 6: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 7: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 8: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 9: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 10: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 11: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 12: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 13: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 14: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 15: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 16: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 17: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 18: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
Bit 20: Falling edge event pending for configurable line.
Allowed values:
0: NotPending: No trigger request occurred
1: Pending: Selected trigger request occurred
EXTI rising trigger selection register 2
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RT2
rw |
EXTI falling trigger selection register 2
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FT2
rw |
EXTI software interrupt event register 2
Offset: 0x30, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SWI2
rw |
EXTI rising edge pending register 2
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RPIF2
rw |
EXTI falling edge pending register 2
Offset: 0x38, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FPIF2
rw |
EXTI external interrupt selection register
Offset: 0x60, size: 32, reset: 0x00000000, access: read-write
4/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EXTI24_31
rw |
EXTI16_23
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EXTI8_15
rw |
EXTI0_7
rw |
Bits 0-7: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 8-15: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 16-23: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 24-31: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
EXTI external interrupt selection register
Offset: 0x64, size: 32, reset: 0x00000000, access: read-write
4/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EXTI24_31
rw |
EXTI16_23
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EXTI8_15
rw |
EXTI0_7
rw |
Bits 0-7: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 8-15: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 16-23: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 24-31: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
EXTI external interrupt selection register
Offset: 0x68, size: 32, reset: 0x00000000, access: read-write
4/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EXTI24_31
rw |
EXTI16_23
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EXTI8_15
rw |
EXTI0_7
rw |
Bits 0-7: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 8-15: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 16-23: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 24-31: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
EXTI external interrupt selection register
Offset: 0x6c, size: 32, reset: 0x00000000, access: read-write
4/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EXTI24_31
rw |
EXTI16_23
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EXTI8_15
rw |
EXTI0_7
rw |
Bits 0-7: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 8-15: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 16-23: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
Bits 24-31: GPIO port selection.
Allowed values:
0: PA: GPIO port A selected
1: PB: GPIO port B selected
2: PC: GPIO port C selected
3: PD: GPIO port D selected
5: PF: GPIO port F selected
EXTI CPU wakeup with interrupt mask register
Offset: 0x80, size: 32, reset: 0xFFF80000, access: read-write
32/32 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
IM31
rw |
IM30
rw |
IM29
rw |
IM28
rw |
IM27
rw |
IM26
rw |
IM25
rw |
IM24
rw |
IM23
rw |
IM22
rw |
IM21
rw |
IM20
rw |
IM19
rw |
IM18
rw |
IM17
rw |
IM16
rw |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
IM15
rw |
IM14
rw |
IM13
rw |
IM12
rw |
IM11
rw |
IM10
rw |
IM9
rw |
IM8
rw |
IM7
rw |
IM6
rw |
IM5
rw |
IM4
rw |
IM3
rw |
IM2
rw |
IM1
rw |
IM0
rw |
Bit 0: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 1: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 2: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 3: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 4: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 5: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 6: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 7: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 8: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 9: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 10: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 11: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 12: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 13: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 14: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 15: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 16: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 17: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 18: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 19: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 20: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 21: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 22: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 23: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 24: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 25: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 26: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 27: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 28: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 29: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 30: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 31: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
EXTI CPU wakeup with event mask register
Offset: 0x84, size: 32, reset: 0x00000000, access: read-write
29/29 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EM31
rw |
EM30
rw |
EM29
rw |
EM28
rw |
EM27
rw |
EM26
rw |
EM25
rw |
EM23
rw |
EM21
rw |
EM19
rw |
EM18
rw |
EM17
rw |
EM16
rw |
|||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EM15
rw |
EM14
rw |
EM13
rw |
EM12
rw |
EM11
rw |
EM10
rw |
EM9
rw |
EM8
rw |
EM7
rw |
EM6
rw |
EM5
rw |
EM4
rw |
EM3
rw |
EM2
rw |
EM1
rw |
EM0
rw |
Bit 0: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 1: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 2: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 3: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 4: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 5: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 6: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 7: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 8: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 9: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 10: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 11: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 12: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 13: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 14: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 15: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 16: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 17: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 18: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 19: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 21: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 23: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 25: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 26: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 27: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 28: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 29: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 30: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 31: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
EXTI CPU wakeup with interrupt mask register
Offset: 0x90, size: 32, reset: 0xFFFFFFFF, access: read-write
4/4 fields covered.
Bit 0: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 1: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 2: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 3: CPU wakeup with interrupt mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
EXTI CPU wakeup with event mask register
Offset: 0x94, size: 32, reset: 0x00000000, access: read-write
4/4 fields covered.
Bit 0: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 1: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 2: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
Bit 3: CPU wakeup with event mask on event input.
Allowed values:
0: Masked: Interrupt request line is masked
1: Unmasked: Interrupt request line is unmasked
0x40006400: FD controller area network
44/160 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CREL | ||||||||||||||||||||||||||||||||
0x4 | ENDN | ||||||||||||||||||||||||||||||||
0xc | DBTP | ||||||||||||||||||||||||||||||||
0x10 | TEST | ||||||||||||||||||||||||||||||||
0x14 | RWD | ||||||||||||||||||||||||||||||||
0x18 | CCCR | ||||||||||||||||||||||||||||||||
0x1c | NBTP | ||||||||||||||||||||||||||||||||
0x20 | TSCC | ||||||||||||||||||||||||||||||||
0x24 | TSCV | ||||||||||||||||||||||||||||||||
0x28 | TOCC | ||||||||||||||||||||||||||||||||
0x2c | TOCV | ||||||||||||||||||||||||||||||||
0x40 | ECR | ||||||||||||||||||||||||||||||||
0x44 | PSR | ||||||||||||||||||||||||||||||||
0x48 | TDCR | ||||||||||||||||||||||||||||||||
0x50 | IR | ||||||||||||||||||||||||||||||||
0x54 | IE | ||||||||||||||||||||||||||||||||
0x58 | ILS | ||||||||||||||||||||||||||||||||
0x5c | ILE | ||||||||||||||||||||||||||||||||
0x80 | RXGFC | ||||||||||||||||||||||||||||||||
0x84 | XIDAM | ||||||||||||||||||||||||||||||||
0x88 | HPMS | ||||||||||||||||||||||||||||||||
0x90 | RXF0S | ||||||||||||||||||||||||||||||||
0x94 | RXF0A | ||||||||||||||||||||||||||||||||
0x98 | RXF1S | ||||||||||||||||||||||||||||||||
0x9c | RXF1A | ||||||||||||||||||||||||||||||||
0xc0 | TXBC | ||||||||||||||||||||||||||||||||
0xc4 | TXFQS | ||||||||||||||||||||||||||||||||
0xc8 | TXBRP | ||||||||||||||||||||||||||||||||
0xcc | TXBAR | ||||||||||||||||||||||||||||||||
0xd0 | TXBCR | ||||||||||||||||||||||||||||||||
0xd4 | TXBTO | ||||||||||||||||||||||||||||||||
0xd8 | TXBCF | ||||||||||||||||||||||||||||||||
0xdc | TXBTIE | ||||||||||||||||||||||||||||||||
0xe0 | TXBCIE | ||||||||||||||||||||||||||||||||
0xe4 | TXEFS | ||||||||||||||||||||||||||||||||
0xe8 | TXEFA | ||||||||||||||||||||||||||||||||
0x100 | CKDIV |
FDCAN core release register
Offset: 0x0, size: 32, reset: 0x32141218, access: Unspecified
6/6 fields covered.
FDCAN endian register
Offset: 0x4, size: 32, reset: 0x87654321, access: Unspecified
1/1 fields covered.
FDCAN data bit timing and prescaler register
Offset: 0xc, size: 32, reset: 0x00000A33, access: Unspecified
0/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDC
rw |
DBRP
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DTSEG1
rw |
DTSEG2
rw |
DSJW
rw |
Bits 0-3: Synchronization jump width Must always be smaller than DTSEG2, valid values are 0 to 15. The value used by the hardware is the one programmed, incremented by 1: tSJW = (DSJW + 1) x tq..
Bits 4-7: Data time segment after sample point Valid values are 0 to 15. The value used by the hardware is the one programmed, incremented by 1, i.e. tBS2 = (DTSEG2 + 1) x tq..
Bits 8-12: Data time segment before sample point Valid values are 0 to 31. The value used by the hardware is the one programmed, incremented by 1, i.e. tBS1 = (DTSEG1 + 1) x tq..
Bits 16-20: Data bit rate prescaler The value by which the oscillator frequency is divided to generate the bit time quanta. The bit time is built up from a multiple of this quanta. Valid values for the Baud Rate Prescaler are 0 to 31. The hardware interpreters this value as the value programmed plus 1..
Bit 23: Transceiver delay compensation.
FDCAN test register
Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified
1/3 fields covered.
FDCAN RAM watchdog register
Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified
1/2 fields covered.
Bits 0-7: Watchdog configuration Start value of the message RAM watchdog counter. With the reset value of 00, the counter is disabled. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of FDCAN_CCCR register are set to 1..
Bits 8-15: Watchdog value Actual message RAM watchdog counter value..
FDCAN CC control register
Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified
1/14 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NISO
rw |
TXP
rw |
EFBI
rw |
PXHD
rw |
BRSE
rw |
FDOE
rw |
TEST
rw |
DAR
rw |
MON
rw |
CSR
rw |
CSA
r |
ASM
rw |
CCE
rw |
INIT
rw |
Bit 0: Initialization.
Bit 1: Configuration change enable.
Bit 2: ASM restricted operation mode The restricted operation mode is intended for applications that adapt themselves to different CAN bit rates. The application tests different bit rates and leaves the Restricted Operation Mode after it has received a valid frame. In the optional Restricted Operation Mode the node is able to transmit and receive data and remote frames and it gives acknowledge to valid frames, but it does not send active error frames or overload frames. In case of an error condition or overload condition, it does not send dominant bits, instead it waits for the occurrence of bus idle condition to resynchronize itself to the CAN communication. The error counters are not incremented. Bit ASM can only be set by software when both CCE and INIT are set to 1. The bit can be reset by the software at any time..
Bit 3: Clock stop acknowledge.
Bit 4: Clock stop request.
Bit 5: Bus monitoring mode Bit MON can only be set by software when both CCE and INIT are set to 1. The bit can be reset by the Host at any time..
Bit 6: Disable automatic retransmission.
Bit 7: Test mode enable.
Bit 8: FD operation enable.
Bit 9: FDCAN bit rate switching.
Bit 12: Protocol exception handling disable.
Bit 13: Edge filtering during bus integration.
Bit 14: If this bit is set, the FDCAN pauses for two CAN bit times before starting the next transmission after successfully transmitting a frame..
Bit 15: Non ISO operation If this bit is set, the FDCAN uses the CAN FD frame format as specified by the Bosch CAN FD Specification V1.0..
FDCAN nominal bit timing and prescaler register
Offset: 0x1c, size: 32, reset: 0x06000A03, access: Unspecified
0/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NSJW
rw |
NBRP
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
NTSEG1
rw |
NTSEG2
rw |
Bits 0-6: Nominal time segment after sample point Valid values are 0 to 127. The actual interpretation by the hardware of this value is such that one more than the programmed value is used..
Bits 8-15: Nominal time segment before sample point Valid values are 0 to 255. The actual interpretation by the hardware of this value is such that one more than the programmed value is used. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 16-24: Bit rate prescaler Value by which the oscillator frequency is divided for generating the bit time quanta. The bit time is built up from a multiple of this quanta. Valid values are 0 to 511. The actual interpretation by the hardware of this value is such that one more than the value programmed here is used. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 25-31: Nominal (re)synchronization jump width Valid values are 0 to 127. The actual interpretation by the hardware of this value is such that the used value is the one programmed incremented by one. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN timestamp counter configuration register
Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
Bits 0-1: Timestamp select These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 16-19: Timestamp counter prescaler Configures the timestamp and timeout counters time unit in multiples of CAN bit times [1 : 16]. The actual interpretation by the hardware of this value is such that one more than the value programmed here is used. In CAN FD mode the internal timestamp counter TCP does not provide a constant time base due to the different CAN bit times between arbitration phase and data phase. Thus CAN FD requires an external counter for timestamp generation (TSS = 10). These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN timestamp counter value register
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TSC
rw |
Bits 0-15: Timestamp counter The internal/external timestamp counter value is captured on start of frame (both Rx and Tx). When TSCC[TSS] = 01, the timestamp counter is incremented in multiples of CAN bit times [1 : 16] depending on the configuration of TSCC[TCP]. A wrap around sets interrupt flag IR[TSW]. Write access resets the counter to 0. When TSCC.TSS = 10, TSC reflects the external timestamp counter value. A write access has no impact..
FDCAN timeout counter configuration register
Offset: 0x28, size: 32, reset: 0xFFFF0000, access: Unspecified
0/3 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TOP
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TOS
rw |
ETOC
rw |
Bit 0: Timeout counter enable This is a protected write (P) bit, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 1-2: Timeout select When operating in Continuous mode, a write to TOCV presets the counter to the value configured by TOCC[TOP] and continues down-counting. When the timeout counter is controlled by one of the FIFOs, an empty FIFO presets the counter to the value configured by TOCC[TOP]. Down-counting is started when the first FIFO element is stored. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 16-31: Timeout period Start value of the timeout counter (down-counter). Configures the timeout period..
FDCAN timeout counter value register
Offset: 0x2c, size: 32, reset: 0x0000FFFF, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TOC
rw |
Bits 0-15: Timeout counter The timeout counter is decremented in multiples of CAN bit times [1 : 16] depending on the configuration of TSCC.TCP. When decremented to 0, interrupt flag IR.TOO is set and the Timeout Counter is stopped. Start and reset/restart conditions are configured via TOCC.TOS..
FDCAN error counter register
Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified
3/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CEL
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RP
r |
REC
r |
TEC
r |
Bits 0-7: Transmit error counter Actual state of the transmit error counter, values between 0 and 255. When CCCR.ASM is set, the CAN protocol controller does not increment TEC and REC when a CAN protocol error is detected, but CEL is still incremented..
Bits 8-14: Receive error counter Actual state of the receive error counter, values between 0 and 127..
Bit 15: Receive error passive.
Bits 16-23: CAN error logging The counter is incremented each time when a CAN protocol error causes the transmit error counter or the receive error counter to be incremented. It is reset by read access to CEL. The counter stops at 0xFF; the next increment of TEC or REC sets interrupt flag IR[ELO]. Access type is RX: reset on read..
FDCAN protocol status register
Offset: 0x44, size: 32, reset: 0x00000707, access: Unspecified
5/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDCV
r |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PXE
rw |
REDL
rw |
RBRS
rw |
RESI
rw |
DLEC
rw |
BO
r |
EW
r |
EP
r |
ACT
r |
LEC
rw |
Bits 0-2: Last error code The LEC indicates the type of the last error to occur on the CAN bus. This field is cleared to 0 when a message has been transferred (reception or transmission) without error. Access type is RS: set on read..
Bits 3-4: Activity Monitors the module's CAN communication state..
Bit 5: Error passive.
Bit 6: Warning Sstatus.
Bit 7: Bus_Off status.
Bits 8-10: Data last error code Type of last error that occurred in the data phase of a FDCAN format frame with its BRS flag set. Coding is the same as for LEC. This field is cleared to 0 when a FDCAN format frame with its BRS flag set has been transferred (reception or transmission) without error. Access type is RS: set on read..
Bit 11: ESI flag of last received FDCAN message This bit is set together with REDL, independent of acceptance filtering. Access type is RX: reset on read..
Bit 12: BRS flag of last received FDCAN message This bit is set together with REDL, independent of acceptance filtering. Access type is RX: reset on read..
Bit 13: Received FDCAN message This bit is set independent of acceptance filtering. Access type is RX: reset on read..
Bit 14: Protocol exception event.
Bits 16-22: Transmitter delay compensation value Position of the secondary sample point, defined by the sum of the measured delay from FDCAN_TX to FDCAN_RX and TDCR.TDCO. The SSP position is, in the data phase, the number of minimum time quanta (mtq) between the start of the transmitted bit and the secondary sample point. Valid values are 0 to 127 mtq..
FDCAN transmitter delay compensation register
Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
Bits 0-6: Transmitter delay compensation filter window length Defines the minimum value for the SSP position, dominant edges on FDCAN_RX that would result in an earlier SSP position are ignored for transmitter delay measurements. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 8-14: Transmitter delay compensation offset Offset value defining the distance between the measured delay from FDCAN_TX to FDCAN_RX and the secondary sample point. Valid values are 0 to 127 mtq. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN interrupt register
Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified
0/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARA
rw |
PED
rw |
PEA
rw |
WDI
rw |
BO
rw |
EW
rw |
EP
rw |
ELO
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TOO
rw |
MRAF
rw |
TSW
rw |
TEFL
rw |
TEFF
rw |
TEFN
rw |
TFE
rw |
TCF
rw |
TC
rw |
HPM
rw |
RF1L
rw |
RF1F
rw |
RF1N
rw |
RF0L
rw |
RF0F
rw |
RF0N
rw |
Bit 0: Rx FIFO 0 new message.
Bit 1: Rx FIFO 0 full.
Bit 2: Rx FIFO 0 message lost.
Bit 3: Rx FIFO 1 new message.
Bit 4: Rx FIFO 1 full.
Bit 5: Rx FIFO 1 message lost.
Bit 6: High-priority message.
Bit 7: Transmission completed.
Bit 8: Transmission cancellation finished.
Bit 9: Tx FIFO empty.
Bit 10: Tx event FIFO New Entry.
Bit 11: Tx event FIFO full.
Bit 12: Tx event FIFO element lost.
Bit 13: Timestamp wraparound.
Bit 14: Message RAM access failure The flag is set when the Rx handler: has not completed acceptance filtering or storage of an accepted message until the arbitration field of the following message has been received. In this case acceptance filtering or message storage is aborted and the Rx Handler starts processing of the following message. was unable to write a message to the message RAM. In this case message storage is aborted. In both cases the FIFO put index is not updated. The partly stored message is overwritten when the next message is stored to this location. The flag is also set when the Tx Handler was not able to read a message from the Message RAM in time. In this case message transmission is aborted. In case of a Tx Handler access failure the FDCAN is switched into Restricted Operation Mode (see mode). To leave Restricted Operation Mode, the Host CPU has to reset CCCR.ASM..
Bit 15: Timeout occurred.
Bit 16: Error logging overflow.
Bit 17: Error passive.
Bit 18: Warning status.
Bit 19: Bus_Off status.
Bit 20: Watchdog interrupt.
Bit 21: Protocol error in arbitration phase (nominal bit time is used).
Bit 22: Protocol error in data phase (data bit time is used).
Bit 23: Access to reserved address.
FDCAN interrupt enable register
Offset: 0x54, size: 32, reset: 0x00000000, access: Unspecified
0/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARAE
rw |
PEDE
rw |
PEAE
rw |
WDIE
rw |
BOE
rw |
EWE
rw |
EPE
rw |
ELOE
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TOOE
rw |
MRAFE
rw |
TSWE
rw |
TEFLE
rw |
TEFFE
rw |
TEFNE
rw |
TFEE
rw |
TCFE
rw |
TCE
rw |
HPME
rw |
RF1LE
rw |
RF1FE
rw |
RF1NE
rw |
RF0LE
rw |
RF0FE
rw |
RF0NE
rw |
Bit 0: Rx FIFO 0 new message interrupt enable.
Bit 1: Rx FIFO 0 full interrupt enable.
Bit 2: Rx FIFO 0 message lost interrupt enable.
Bit 3: Rx FIFO 1 new message interrupt enable.
Bit 4: Rx FIFO 1 full interrupt enable.
Bit 5: Rx FIFO 1 message lost interrupt enable.
Bit 6: High-priority message interrupt enable.
Bit 7: Transmission completed interrupt enable.
Bit 8: Transmission cancellation finished interrupt enable.
Bit 9: Tx FIFO empty interrupt enable.
Bit 10: Tx event FIFO new entry interrupt enable.
Bit 11: Tx event FIFO full interrupt enable.
Bit 12: Tx event FIFO element lost interrupt enable.
Bit 13: Timestamp wraparound interrupt enable.
Bit 14: Message RAM access failure interrupt enable.
Bit 15: Timeout occurred interrupt enable.
Bit 16: Error logging overflow interrupt enable.
Bit 17: Error passive interrupt enable.
Bit 18: Warning status interrupt enable.
Bit 19: Bus_Off status.
Bit 20: Watchdog interrupt enable.
Bit 21: Protocol error in arbitration phase enable.
Bit 22: Protocol error in data phase enable.
Bit 23: Access to reserved address enable.
FDCAN interrupt line select register
Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified
0/7 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PERR
rw |
BERR
rw |
MISC
rw |
TFERR
rw |
SMSG
rw |
RxFIFO1
rw |
RxFIFO0
rw |
Bit 0: RX FIFO bit grouping the following interruption RF0LL: Rx FIFO 0 message lost interrupt line RF0FL: Rx FIFO 0 full interrupt line RF0NL: Rx FIFO 0 new message interrupt line.
Bit 1: RX FIFO bit grouping the following interruption RF1LL: Rx FIFO 1 message lost interrupt line RF1FL: Rx FIFO 1 full Interrupt line RF1NL: Rx FIFO 1 new message interrupt line.
Bit 2: Status message bit grouping the following interruption TCFL: Transmission cancellation finished interrupt line TCL: Transmission completed interrupt line HPML: High-priority message interrupt line.
Bit 3: Tx FIFO ERROR grouping the following interruption TEFLL: Tx event FIFO element lost interrupt line TEFFL: Tx event FIFO full interrupt line TEFNL: Tx event FIFO new entry interrupt line TFEL: Tx FIFO empty interrupt line.
Bit 4: Interrupt regrouping the following interruption TOOL: Timeout occurred interrupt line MRAFL: Message RAM access failure interrupt line TSWL: Timestamp wraparound interrupt line.
Bit 5: BERR.
Bit 6: Protocol error grouping the following interruption ARAL: Access to reserved address line PEDL: Protocol error in data phase line PEAL: Protocol error in arbitration phase line WDIL: Watchdog interrupt line BOL: Bus_Off status EWL: Warning status interrupt line.
FDCAN interrupt line enable register
Offset: 0x5c, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
FDCAN global filter configuration register
Offset: 0x80, size: 32, reset: 0x00000000, access: Unspecified
0/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LSE
rw |
LSS
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
F0OM
rw |
F1OM
rw |
ANFS
rw |
ANFE
rw |
RRFS
rw |
RRFE
rw |
Bit 0: Reject remote frames extended These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bit 1: Reject remote frames standard These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 2-3: Accept non-matching frames extended Defines how received messages with 29-bit IDs that do not match any element of the filter list are treated. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 4-5: Accept Non-matching frames standard Defines how received messages with 11-bit IDs that do not match any element of the filter list are treated. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bit 8: FIFO 1 operation mode (overwrite or blocking) This is a protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bit 9: FIFO 0 operation mode (overwrite or blocking) This is protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 16-20: List size standard >28: Values greater than 28 are interpreted as 28. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 24-27: List size extended >8: Values greater than 8 are interpreted as 8. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN extended ID and mask register
Offset: 0x84, size: 32, reset: 0x1FFFFFFF, access: Unspecified
0/1 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EIDM
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EIDM
rw |
Bits 0-28: Extended ID mask For acceptance filtering of extended frames the Extended ID AND Mask is AND-ed with the Message ID of a received frame. Intended for masking of 29-bit IDs in SAE J1939. With the reset value of all bits set to 1 the mask is not active. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN high-priority message status register
Offset: 0x88, size: 32, reset: 0x00000000, access: Unspecified
4/4 fields covered.
Bits 0-2: Buffer index Index of Rx FIFO element to which the message was stored. Only valid when MSI[1] = 1..
Bits 6-7: Message storage indicator.
Bits 8-12: Filter index Index of matching filter element. Range is 0 to RXGFC[LSS] - 1 or RXGFC[LSE] - 1..
Bit 15: Filter list Indicates the filter list of the matching filter element..
FDCAN Rx FIFO 0 status register
Offset: 0x90, size: 32, reset: 0x00000000, access: Unspecified
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RF0L
r |
F0F
r |
F0PI
r |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
F0GI
r |
F0FL
r |
Bits 0-3: Rx FIFO 0 fill level Number of elements stored in Rx FIFO 0, range 0 to 3..
Bits 8-9: Rx FIFO 0 get index Rx FIFO 0 read index pointer, range 0 to 2..
Bits 16-17: Rx FIFO 0 put index Rx FIFO 0 write index pointer, range 0 to 2..
Bit 24: Rx FIFO 0 full.
Bit 25: Rx FIFO 0 message lost This bit is a copy of interrupt flag IR[RF0L]. When IR[RF0L] is reset, this bit is also reset..
CAN Rx FIFO 0 acknowledge register
Offset: 0x94, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
F0AI
rw |
Bits 0-2: Rx FIFO 0 acknowledge index After the Host has read a message or a sequence of messages from Rx FIFO 0 it has to write the buffer index of the last element read from Rx FIFO 0 to F0AI. This sets the Rx FIFO0 get index RXF0S[F0GI] to F0AI + 1 and update the FIFO 0 fill level RXF0S[F0FL]..
FDCAN Rx FIFO 1 status register
Offset: 0x98, size: 32, reset: 0x00000000, access: Unspecified
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RF1L
r |
F1F
r |
F1PI
r |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
F1GI
r |
F1FL
r |
Bits 0-3: Rx FIFO 1 fill level Number of elements stored in Rx FIFO 1, range 0 to 3..
Bits 8-9: Rx FIFO 1 get index Rx FIFO 1 read index pointer, range 0 to 2..
Bits 16-17: Rx FIFO 1 put index Rx FIFO 1 write index pointer, range 0 to 2..
Bit 24: Rx FIFO 1 full.
Bit 25: Rx FIFO 1 message lost This bit is a copy of interrupt flag IR[RF1L]. When IR[RF1L] is reset, this bit is also reset..
FDCAN Rx FIFO 1 acknowledge register
Offset: 0x9c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
F1AI
rw |
Bits 0-2: Rx FIFO 1 acknowledge index After the Host has read a message or a sequence of messages from Rx FIFO 1 it has to write the buffer index of the last element read from Rx FIFO 1 to F1AI. This sets the Rx FIFO1 get index RXF1S[F1GI] to F1AI + 1 and update the FIFO 1 Fill Level RXF1S[F1FL]..
FDCAN Tx buffer configuration register
Offset: 0xc0, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TFQM
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
FDCAN Tx FIFO/queue status register
Offset: 0xc4, size: 32, reset: 0x00000003, access: Unspecified
4/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TFQF
r |
TFQPI
r |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TFGI
r |
TFFL
r |
Bits 0-2: Tx FIFO free level Number of consecutive free Tx FIFO elements starting from TFGI, range 0 to 3. Read as 0 when Tx queue operation is configured (TXBC[TFQM] = 1)..
Bits 8-9: Tx FIFO get index Tx FIFO read index pointer, range 0 to 3. Read as 0 when Tx queue operation is configured (TXBC.TFQM = 1).
Bits 16-17: Tx FIFO/queue put index Tx FIFO/queue write index pointer, range 0 to 3.
Bit 21: Tx FIFO/queue full.
FDCAN Tx buffer request pending register
Offset: 0xc8, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TRP
r |
Bits 0-2: Transmission request pending Each Tx Buffer has its own transmission request pending bit. The bits are set via register TXBAR. The bits are reset after a requested transmission has completed or has been canceled via register TXBCR. After a TXBRP bit has been set, a Tx scan is started to check for the pending Tx request with the highest priority (Tx Buffer with lowest Message ID). A cancellation request resets the corresponding transmission request pending bit of register TXBRP. In case a transmission has already been started when a cancellation is requested, this is done at the end of the transmission, regardless whether the transmission was successful or not. The cancellation request bits are reset directly after the corresponding TXBRP bit has been reset. After a cancellation has been requested, a finished cancellation is signaled via TXBCF after successful transmission together with the corresponding TXBTO bit when the transmission has not yet been started at the point of cancellation when the transmission has been aborted due to lost arbitration when an error occurred during frame transmission In DAR mode all transmissions are automatically canceled if they are not successful. The corresponding TXBCF bit is set for all unsuccessful transmissions..
FDCAN Tx buffer add request register
Offset: 0xcc, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AR
rw |
Bits 0-2: Add request Each Tx buffer has its own add request bit. Writing a 1 sets the corresponding add request bit; writing a 0 has no impact. This enables the Host to set transmission requests for multiple Tx buffers with one write to TXBAR. When no Tx scan is running, the bits are reset immediately, else the bits remain set until the Tx scan process has completed..
FDCAN Tx buffer cancellation request register
Offset: 0xd0, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CR
rw |
Bits 0-2: Cancellation request Each Tx buffer has its own cancellation request bit. Writing a 1 sets the corresponding CR bit; writing a 0 has no impact. This enables the Host to set cancellation requests for multiple Tx buffers with one write to TXBCR. The bits remain set until the corresponding TXBRP bit is reset..
FDCAN Tx buffer transmission occurred register
Offset: 0xd4, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TO
r |
FDCAN Tx buffer cancellation finished register
Offset: 0xd8, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CF
r |
Bits 0-2: Cancellation finished Each Tx buffer has its own CF bit. The bits are set when the corresponding TXBRP bit is cleared after a cancellation was requested via TXBCR. In case the corresponding TXBRP bit was not set at the point of cancellation, CF is set immediately. The bits are reset when a new transmission is requested by writing a 1 to the corresponding bit of register TXBAR..
FDCAN Tx buffer transmission interrupt enable register
Offset: 0xdc, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TIE
rw |
FDCAN Tx buffer cancellation finished interrupt enable register
Offset: 0xe0, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CFIE
rw |
FDCAN Tx event FIFO status register
Offset: 0xe4, size: 32, reset: 0x00000000, access: Unspecified
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TEFL
r |
EFF
r |
EFPI
r |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EFGI
r |
EFFL
r |
Bits 0-2: Event FIFO fill level Number of elements stored in Tx event FIFO, range 0 to 3..
Bits 8-9: Event FIFO get index Tx Event FIFO read index pointer, range 0 to 3..
Bits 16-17: Event FIFO put index Tx Event FIFO write index pointer, range 0 to 3..
Bit 24: Event FIFO full.
Bit 25: Tx Event FIFO element lost This bit is a copy of interrupt flag IR[TEFL]. When IR[TEFL] is reset, this bit is also reset. 0 No Tx event FIFO element lost 1 Tx event FIFO element lost, also set after write attempt to Tx Event FIFO of size 0..
FDCAN Tx event FIFO acknowledge register
Offset: 0xe8, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EFAI
rw |
Bits 0-1: Event FIFO acknowledge index After the Host has read an element or a sequence of elements from the Tx event FIFO, it has to write the index of the last element read from Tx event FIFO to EFAI. This sets the Tx event FIFO get index TXEFS[EFGI] to EFAI + 1 and updates the FIFO 0 fill level TXEFS[EFFL]..
FDCAN CFG clock divider register
Offset: 0x100, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PDIV
rw |
Bits 0-3: input clock divider The APB clock could be divided prior to be used by the CAN sub system. The rate must be computed using the divider output clock. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
0x40006800: FD controller area network
44/160 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CREL | ||||||||||||||||||||||||||||||||
0x4 | ENDN | ||||||||||||||||||||||||||||||||
0xc | DBTP | ||||||||||||||||||||||||||||||||
0x10 | TEST | ||||||||||||||||||||||||||||||||
0x14 | RWD | ||||||||||||||||||||||||||||||||
0x18 | CCCR | ||||||||||||||||||||||||||||||||
0x1c | NBTP | ||||||||||||||||||||||||||||||||
0x20 | TSCC | ||||||||||||||||||||||||||||||||
0x24 | TSCV | ||||||||||||||||||||||||||||||||
0x28 | TOCC | ||||||||||||||||||||||||||||||||
0x2c | TOCV | ||||||||||||||||||||||||||||||||
0x40 | ECR | ||||||||||||||||||||||||||||||||
0x44 | PSR | ||||||||||||||||||||||||||||||||
0x48 | TDCR | ||||||||||||||||||||||||||||||||
0x50 | IR | ||||||||||||||||||||||||||||||||
0x54 | IE | ||||||||||||||||||||||||||||||||
0x58 | ILS | ||||||||||||||||||||||||||||||||
0x5c | ILE | ||||||||||||||||||||||||||||||||
0x80 | RXGFC | ||||||||||||||||||||||||||||||||
0x84 | XIDAM | ||||||||||||||||||||||||||||||||
0x88 | HPMS | ||||||||||||||||||||||||||||||||
0x90 | RXF0S | ||||||||||||||||||||||||||||||||
0x94 | RXF0A | ||||||||||||||||||||||||||||||||
0x98 | RXF1S | ||||||||||||||||||||||||||||||||
0x9c | RXF1A | ||||||||||||||||||||||||||||||||
0xc0 | TXBC | ||||||||||||||||||||||||||||||||
0xc4 | TXFQS | ||||||||||||||||||||||||||||||||
0xc8 | TXBRP | ||||||||||||||||||||||||||||||||
0xcc | TXBAR | ||||||||||||||||||||||||||||||||
0xd0 | TXBCR | ||||||||||||||||||||||||||||||||
0xd4 | TXBTO | ||||||||||||||||||||||||||||||||
0xd8 | TXBCF | ||||||||||||||||||||||||||||||||
0xdc | TXBTIE | ||||||||||||||||||||||||||||||||
0xe0 | TXBCIE | ||||||||||||||||||||||||||||||||
0xe4 | TXEFS | ||||||||||||||||||||||||||||||||
0xe8 | TXEFA | ||||||||||||||||||||||||||||||||
0x100 | CKDIV |
FDCAN core release register
Offset: 0x0, size: 32, reset: 0x32141218, access: Unspecified
6/6 fields covered.
FDCAN endian register
Offset: 0x4, size: 32, reset: 0x87654321, access: Unspecified
1/1 fields covered.
FDCAN data bit timing and prescaler register
Offset: 0xc, size: 32, reset: 0x00000A33, access: Unspecified
0/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDC
rw |
DBRP
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DTSEG1
rw |
DTSEG2
rw |
DSJW
rw |
Bits 0-3: Synchronization jump width Must always be smaller than DTSEG2, valid values are 0 to 15. The value used by the hardware is the one programmed, incremented by 1: tSJW = (DSJW + 1) x tq..
Bits 4-7: Data time segment after sample point Valid values are 0 to 15. The value used by the hardware is the one programmed, incremented by 1, i.e. tBS2 = (DTSEG2 + 1) x tq..
Bits 8-12: Data time segment before sample point Valid values are 0 to 31. The value used by the hardware is the one programmed, incremented by 1, i.e. tBS1 = (DTSEG1 + 1) x tq..
Bits 16-20: Data bit rate prescaler The value by which the oscillator frequency is divided to generate the bit time quanta. The bit time is built up from a multiple of this quanta. Valid values for the Baud Rate Prescaler are 0 to 31. The hardware interpreters this value as the value programmed plus 1..
Bit 23: Transceiver delay compensation.
FDCAN test register
Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified
1/3 fields covered.
FDCAN RAM watchdog register
Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified
1/2 fields covered.
Bits 0-7: Watchdog configuration Start value of the message RAM watchdog counter. With the reset value of 00, the counter is disabled. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of FDCAN_CCCR register are set to 1..
Bits 8-15: Watchdog value Actual message RAM watchdog counter value..
FDCAN CC control register
Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified
1/14 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NISO
rw |
TXP
rw |
EFBI
rw |
PXHD
rw |
BRSE
rw |
FDOE
rw |
TEST
rw |
DAR
rw |
MON
rw |
CSR
rw |
CSA
r |
ASM
rw |
CCE
rw |
INIT
rw |
Bit 0: Initialization.
Bit 1: Configuration change enable.
Bit 2: ASM restricted operation mode The restricted operation mode is intended for applications that adapt themselves to different CAN bit rates. The application tests different bit rates and leaves the Restricted Operation Mode after it has received a valid frame. In the optional Restricted Operation Mode the node is able to transmit and receive data and remote frames and it gives acknowledge to valid frames, but it does not send active error frames or overload frames. In case of an error condition or overload condition, it does not send dominant bits, instead it waits for the occurrence of bus idle condition to resynchronize itself to the CAN communication. The error counters are not incremented. Bit ASM can only be set by software when both CCE and INIT are set to 1. The bit can be reset by the software at any time..
Bit 3: Clock stop acknowledge.
Bit 4: Clock stop request.
Bit 5: Bus monitoring mode Bit MON can only be set by software when both CCE and INIT are set to 1. The bit can be reset by the Host at any time..
Bit 6: Disable automatic retransmission.
Bit 7: Test mode enable.
Bit 8: FD operation enable.
Bit 9: FDCAN bit rate switching.
Bit 12: Protocol exception handling disable.
Bit 13: Edge filtering during bus integration.
Bit 14: If this bit is set, the FDCAN pauses for two CAN bit times before starting the next transmission after successfully transmitting a frame..
Bit 15: Non ISO operation If this bit is set, the FDCAN uses the CAN FD frame format as specified by the Bosch CAN FD Specification V1.0..
FDCAN nominal bit timing and prescaler register
Offset: 0x1c, size: 32, reset: 0x06000A03, access: Unspecified
0/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NSJW
rw |
NBRP
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
NTSEG1
rw |
NTSEG2
rw |
Bits 0-6: Nominal time segment after sample point Valid values are 0 to 127. The actual interpretation by the hardware of this value is such that one more than the programmed value is used..
Bits 8-15: Nominal time segment before sample point Valid values are 0 to 255. The actual interpretation by the hardware of this value is such that one more than the programmed value is used. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 16-24: Bit rate prescaler Value by which the oscillator frequency is divided for generating the bit time quanta. The bit time is built up from a multiple of this quanta. Valid values are 0 to 511. The actual interpretation by the hardware of this value is such that one more than the value programmed here is used. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 25-31: Nominal (re)synchronization jump width Valid values are 0 to 127. The actual interpretation by the hardware of this value is such that the used value is the one programmed incremented by one. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN timestamp counter configuration register
Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
Bits 0-1: Timestamp select These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 16-19: Timestamp counter prescaler Configures the timestamp and timeout counters time unit in multiples of CAN bit times [1 : 16]. The actual interpretation by the hardware of this value is such that one more than the value programmed here is used. In CAN FD mode the internal timestamp counter TCP does not provide a constant time base due to the different CAN bit times between arbitration phase and data phase. Thus CAN FD requires an external counter for timestamp generation (TSS = 10). These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN timestamp counter value register
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TSC
rw |
Bits 0-15: Timestamp counter The internal/external timestamp counter value is captured on start of frame (both Rx and Tx). When TSCC[TSS] = 01, the timestamp counter is incremented in multiples of CAN bit times [1 : 16] depending on the configuration of TSCC[TCP]. A wrap around sets interrupt flag IR[TSW]. Write access resets the counter to 0. When TSCC.TSS = 10, TSC reflects the external timestamp counter value. A write access has no impact..
FDCAN timeout counter configuration register
Offset: 0x28, size: 32, reset: 0xFFFF0000, access: Unspecified
0/3 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TOP
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TOS
rw |
ETOC
rw |
Bit 0: Timeout counter enable This is a protected write (P) bit, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 1-2: Timeout select When operating in Continuous mode, a write to TOCV presets the counter to the value configured by TOCC[TOP] and continues down-counting. When the timeout counter is controlled by one of the FIFOs, an empty FIFO presets the counter to the value configured by TOCC[TOP]. Down-counting is started when the first FIFO element is stored. These are protected write (P) bits, write access is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 16-31: Timeout period Start value of the timeout counter (down-counter). Configures the timeout period..
FDCAN timeout counter value register
Offset: 0x2c, size: 32, reset: 0x0000FFFF, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TOC
rw |
Bits 0-15: Timeout counter The timeout counter is decremented in multiples of CAN bit times [1 : 16] depending on the configuration of TSCC.TCP. When decremented to 0, interrupt flag IR.TOO is set and the Timeout Counter is stopped. Start and reset/restart conditions are configured via TOCC.TOS..
FDCAN error counter register
Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified
3/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CEL
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RP
r |
REC
r |
TEC
r |
Bits 0-7: Transmit error counter Actual state of the transmit error counter, values between 0 and 255. When CCCR.ASM is set, the CAN protocol controller does not increment TEC and REC when a CAN protocol error is detected, but CEL is still incremented..
Bits 8-14: Receive error counter Actual state of the receive error counter, values between 0 and 127..
Bit 15: Receive error passive.
Bits 16-23: CAN error logging The counter is incremented each time when a CAN protocol error causes the transmit error counter or the receive error counter to be incremented. It is reset by read access to CEL. The counter stops at 0xFF; the next increment of TEC or REC sets interrupt flag IR[ELO]. Access type is RX: reset on read..
FDCAN protocol status register
Offset: 0x44, size: 32, reset: 0x00000707, access: Unspecified
5/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDCV
r |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PXE
rw |
REDL
rw |
RBRS
rw |
RESI
rw |
DLEC
rw |
BO
r |
EW
r |
EP
r |
ACT
r |
LEC
rw |
Bits 0-2: Last error code The LEC indicates the type of the last error to occur on the CAN bus. This field is cleared to 0 when a message has been transferred (reception or transmission) without error. Access type is RS: set on read..
Bits 3-4: Activity Monitors the module's CAN communication state..
Bit 5: Error passive.
Bit 6: Warning Sstatus.
Bit 7: Bus_Off status.
Bits 8-10: Data last error code Type of last error that occurred in the data phase of a FDCAN format frame with its BRS flag set. Coding is the same as for LEC. This field is cleared to 0 when a FDCAN format frame with its BRS flag set has been transferred (reception or transmission) without error. Access type is RS: set on read..
Bit 11: ESI flag of last received FDCAN message This bit is set together with REDL, independent of acceptance filtering. Access type is RX: reset on read..
Bit 12: BRS flag of last received FDCAN message This bit is set together with REDL, independent of acceptance filtering. Access type is RX: reset on read..
Bit 13: Received FDCAN message This bit is set independent of acceptance filtering. Access type is RX: reset on read..
Bit 14: Protocol exception event.
Bits 16-22: Transmitter delay compensation value Position of the secondary sample point, defined by the sum of the measured delay from FDCAN_TX to FDCAN_RX and TDCR.TDCO. The SSP position is, in the data phase, the number of minimum time quanta (mtq) between the start of the transmitted bit and the secondary sample point. Valid values are 0 to 127 mtq..
FDCAN transmitter delay compensation register
Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
Bits 0-6: Transmitter delay compensation filter window length Defines the minimum value for the SSP position, dominant edges on FDCAN_RX that would result in an earlier SSP position are ignored for transmitter delay measurements. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 8-14: Transmitter delay compensation offset Offset value defining the distance between the measured delay from FDCAN_TX to FDCAN_RX and the secondary sample point. Valid values are 0 to 127 mtq. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN interrupt register
Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified
0/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARA
rw |
PED
rw |
PEA
rw |
WDI
rw |
BO
rw |
EW
rw |
EP
rw |
ELO
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TOO
rw |
MRAF
rw |
TSW
rw |
TEFL
rw |
TEFF
rw |
TEFN
rw |
TFE
rw |
TCF
rw |
TC
rw |
HPM
rw |
RF1L
rw |
RF1F
rw |
RF1N
rw |
RF0L
rw |
RF0F
rw |
RF0N
rw |
Bit 0: Rx FIFO 0 new message.
Bit 1: Rx FIFO 0 full.
Bit 2: Rx FIFO 0 message lost.
Bit 3: Rx FIFO 1 new message.
Bit 4: Rx FIFO 1 full.
Bit 5: Rx FIFO 1 message lost.
Bit 6: High-priority message.
Bit 7: Transmission completed.
Bit 8: Transmission cancellation finished.
Bit 9: Tx FIFO empty.
Bit 10: Tx event FIFO New Entry.
Bit 11: Tx event FIFO full.
Bit 12: Tx event FIFO element lost.
Bit 13: Timestamp wraparound.
Bit 14: Message RAM access failure The flag is set when the Rx handler: has not completed acceptance filtering or storage of an accepted message until the arbitration field of the following message has been received. In this case acceptance filtering or message storage is aborted and the Rx Handler starts processing of the following message. was unable to write a message to the message RAM. In this case message storage is aborted. In both cases the FIFO put index is not updated. The partly stored message is overwritten when the next message is stored to this location. The flag is also set when the Tx Handler was not able to read a message from the Message RAM in time. In this case message transmission is aborted. In case of a Tx Handler access failure the FDCAN is switched into Restricted Operation Mode (see mode). To leave Restricted Operation Mode, the Host CPU has to reset CCCR.ASM..
Bit 15: Timeout occurred.
Bit 16: Error logging overflow.
Bit 17: Error passive.
Bit 18: Warning status.
Bit 19: Bus_Off status.
Bit 20: Watchdog interrupt.
Bit 21: Protocol error in arbitration phase (nominal bit time is used).
Bit 22: Protocol error in data phase (data bit time is used).
Bit 23: Access to reserved address.
FDCAN interrupt enable register
Offset: 0x54, size: 32, reset: 0x00000000, access: Unspecified
0/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARAE
rw |
PEDE
rw |
PEAE
rw |
WDIE
rw |
BOE
rw |
EWE
rw |
EPE
rw |
ELOE
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TOOE
rw |
MRAFE
rw |
TSWE
rw |
TEFLE
rw |
TEFFE
rw |
TEFNE
rw |
TFEE
rw |
TCFE
rw |
TCE
rw |
HPME
rw |
RF1LE
rw |
RF1FE
rw |
RF1NE
rw |
RF0LE
rw |
RF0FE
rw |
RF0NE
rw |
Bit 0: Rx FIFO 0 new message interrupt enable.
Bit 1: Rx FIFO 0 full interrupt enable.
Bit 2: Rx FIFO 0 message lost interrupt enable.
Bit 3: Rx FIFO 1 new message interrupt enable.
Bit 4: Rx FIFO 1 full interrupt enable.
Bit 5: Rx FIFO 1 message lost interrupt enable.
Bit 6: High-priority message interrupt enable.
Bit 7: Transmission completed interrupt enable.
Bit 8: Transmission cancellation finished interrupt enable.
Bit 9: Tx FIFO empty interrupt enable.
Bit 10: Tx event FIFO new entry interrupt enable.
Bit 11: Tx event FIFO full interrupt enable.
Bit 12: Tx event FIFO element lost interrupt enable.
Bit 13: Timestamp wraparound interrupt enable.
Bit 14: Message RAM access failure interrupt enable.
Bit 15: Timeout occurred interrupt enable.
Bit 16: Error logging overflow interrupt enable.
Bit 17: Error passive interrupt enable.
Bit 18: Warning status interrupt enable.
Bit 19: Bus_Off status.
Bit 20: Watchdog interrupt enable.
Bit 21: Protocol error in arbitration phase enable.
Bit 22: Protocol error in data phase enable.
Bit 23: Access to reserved address enable.
FDCAN interrupt line select register
Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified
0/7 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PERR
rw |
BERR
rw |
MISC
rw |
TFERR
rw |
SMSG
rw |
RxFIFO1
rw |
RxFIFO0
rw |
Bit 0: RX FIFO bit grouping the following interruption RF0LL: Rx FIFO 0 message lost interrupt line RF0FL: Rx FIFO 0 full interrupt line RF0NL: Rx FIFO 0 new message interrupt line.
Bit 1: RX FIFO bit grouping the following interruption RF1LL: Rx FIFO 1 message lost interrupt line RF1FL: Rx FIFO 1 full Interrupt line RF1NL: Rx FIFO 1 new message interrupt line.
Bit 2: Status message bit grouping the following interruption TCFL: Transmission cancellation finished interrupt line TCL: Transmission completed interrupt line HPML: High-priority message interrupt line.
Bit 3: Tx FIFO ERROR grouping the following interruption TEFLL: Tx event FIFO element lost interrupt line TEFFL: Tx event FIFO full interrupt line TEFNL: Tx event FIFO new entry interrupt line TFEL: Tx FIFO empty interrupt line.
Bit 4: Interrupt regrouping the following interruption TOOL: Timeout occurred interrupt line MRAFL: Message RAM access failure interrupt line TSWL: Timestamp wraparound interrupt line.
Bit 5: BERR.
Bit 6: Protocol error grouping the following interruption ARAL: Access to reserved address line PEDL: Protocol error in data phase line PEAL: Protocol error in arbitration phase line WDIL: Watchdog interrupt line BOL: Bus_Off status EWL: Warning status interrupt line.
FDCAN interrupt line enable register
Offset: 0x5c, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
FDCAN global filter configuration register
Offset: 0x80, size: 32, reset: 0x00000000, access: Unspecified
0/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LSE
rw |
LSS
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
F0OM
rw |
F1OM
rw |
ANFS
rw |
ANFE
rw |
RRFS
rw |
RRFE
rw |
Bit 0: Reject remote frames extended These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bit 1: Reject remote frames standard These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 2-3: Accept non-matching frames extended Defines how received messages with 29-bit IDs that do not match any element of the filter list are treated. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 4-5: Accept Non-matching frames standard Defines how received messages with 11-bit IDs that do not match any element of the filter list are treated. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bit 8: FIFO 1 operation mode (overwrite or blocking) This is a protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bit 9: FIFO 0 operation mode (overwrite or blocking) This is protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 16-20: List size standard >28: Values greater than 28 are interpreted as 28. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
Bits 24-27: List size extended >8: Values greater than 8 are interpreted as 8. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN extended ID and mask register
Offset: 0x84, size: 32, reset: 0x1FFFFFFF, access: Unspecified
0/1 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EIDM
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EIDM
rw |
Bits 0-28: Extended ID mask For acceptance filtering of extended frames the Extended ID AND Mask is AND-ed with the Message ID of a received frame. Intended for masking of 29-bit IDs in SAE J1939. With the reset value of all bits set to 1 the mask is not active. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
FDCAN high-priority message status register
Offset: 0x88, size: 32, reset: 0x00000000, access: Unspecified
4/4 fields covered.
Bits 0-2: Buffer index Index of Rx FIFO element to which the message was stored. Only valid when MSI[1] = 1..
Bits 6-7: Message storage indicator.
Bits 8-12: Filter index Index of matching filter element. Range is 0 to RXGFC[LSS] - 1 or RXGFC[LSE] - 1..
Bit 15: Filter list Indicates the filter list of the matching filter element..
FDCAN Rx FIFO 0 status register
Offset: 0x90, size: 32, reset: 0x00000000, access: Unspecified
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RF0L
r |
F0F
r |
F0PI
r |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
F0GI
r |
F0FL
r |
Bits 0-3: Rx FIFO 0 fill level Number of elements stored in Rx FIFO 0, range 0 to 3..
Bits 8-9: Rx FIFO 0 get index Rx FIFO 0 read index pointer, range 0 to 2..
Bits 16-17: Rx FIFO 0 put index Rx FIFO 0 write index pointer, range 0 to 2..
Bit 24: Rx FIFO 0 full.
Bit 25: Rx FIFO 0 message lost This bit is a copy of interrupt flag IR[RF0L]. When IR[RF0L] is reset, this bit is also reset..
CAN Rx FIFO 0 acknowledge register
Offset: 0x94, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
F0AI
rw |
Bits 0-2: Rx FIFO 0 acknowledge index After the Host has read a message or a sequence of messages from Rx FIFO 0 it has to write the buffer index of the last element read from Rx FIFO 0 to F0AI. This sets the Rx FIFO0 get index RXF0S[F0GI] to F0AI + 1 and update the FIFO 0 fill level RXF0S[F0FL]..
FDCAN Rx FIFO 1 status register
Offset: 0x98, size: 32, reset: 0x00000000, access: Unspecified
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RF1L
r |
F1F
r |
F1PI
r |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
F1GI
r |
F1FL
r |
Bits 0-3: Rx FIFO 1 fill level Number of elements stored in Rx FIFO 1, range 0 to 3..
Bits 8-9: Rx FIFO 1 get index Rx FIFO 1 read index pointer, range 0 to 2..
Bits 16-17: Rx FIFO 1 put index Rx FIFO 1 write index pointer, range 0 to 2..
Bit 24: Rx FIFO 1 full.
Bit 25: Rx FIFO 1 message lost This bit is a copy of interrupt flag IR[RF1L]. When IR[RF1L] is reset, this bit is also reset..
FDCAN Rx FIFO 1 acknowledge register
Offset: 0x9c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
F1AI
rw |
Bits 0-2: Rx FIFO 1 acknowledge index After the Host has read a message or a sequence of messages from Rx FIFO 1 it has to write the buffer index of the last element read from Rx FIFO 1 to F1AI. This sets the Rx FIFO1 get index RXF1S[F1GI] to F1AI + 1 and update the FIFO 1 Fill Level RXF1S[F1FL]..
FDCAN Tx buffer configuration register
Offset: 0xc0, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TFQM
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
FDCAN Tx FIFO/queue status register
Offset: 0xc4, size: 32, reset: 0x00000003, access: Unspecified
4/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TFQF
r |
TFQPI
r |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TFGI
r |
TFFL
r |
Bits 0-2: Tx FIFO free level Number of consecutive free Tx FIFO elements starting from TFGI, range 0 to 3. Read as 0 when Tx queue operation is configured (TXBC[TFQM] = 1)..
Bits 8-9: Tx FIFO get index Tx FIFO read index pointer, range 0 to 3. Read as 0 when Tx queue operation is configured (TXBC.TFQM = 1).
Bits 16-17: Tx FIFO/queue put index Tx FIFO/queue write index pointer, range 0 to 3.
Bit 21: Tx FIFO/queue full.
FDCAN Tx buffer request pending register
Offset: 0xc8, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TRP
r |
Bits 0-2: Transmission request pending Each Tx Buffer has its own transmission request pending bit. The bits are set via register TXBAR. The bits are reset after a requested transmission has completed or has been canceled via register TXBCR. After a TXBRP bit has been set, a Tx scan is started to check for the pending Tx request with the highest priority (Tx Buffer with lowest Message ID). A cancellation request resets the corresponding transmission request pending bit of register TXBRP. In case a transmission has already been started when a cancellation is requested, this is done at the end of the transmission, regardless whether the transmission was successful or not. The cancellation request bits are reset directly after the corresponding TXBRP bit has been reset. After a cancellation has been requested, a finished cancellation is signaled via TXBCF after successful transmission together with the corresponding TXBTO bit when the transmission has not yet been started at the point of cancellation when the transmission has been aborted due to lost arbitration when an error occurred during frame transmission In DAR mode all transmissions are automatically canceled if they are not successful. The corresponding TXBCF bit is set for all unsuccessful transmissions..
FDCAN Tx buffer add request register
Offset: 0xcc, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AR
rw |
Bits 0-2: Add request Each Tx buffer has its own add request bit. Writing a 1 sets the corresponding add request bit; writing a 0 has no impact. This enables the Host to set transmission requests for multiple Tx buffers with one write to TXBAR. When no Tx scan is running, the bits are reset immediately, else the bits remain set until the Tx scan process has completed..
FDCAN Tx buffer cancellation request register
Offset: 0xd0, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CR
rw |
Bits 0-2: Cancellation request Each Tx buffer has its own cancellation request bit. Writing a 1 sets the corresponding CR bit; writing a 0 has no impact. This enables the Host to set cancellation requests for multiple Tx buffers with one write to TXBCR. The bits remain set until the corresponding TXBRP bit is reset..
FDCAN Tx buffer transmission occurred register
Offset: 0xd4, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TO
r |
FDCAN Tx buffer cancellation finished register
Offset: 0xd8, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CF
r |
Bits 0-2: Cancellation finished Each Tx buffer has its own CF bit. The bits are set when the corresponding TXBRP bit is cleared after a cancellation was requested via TXBCR. In case the corresponding TXBRP bit was not set at the point of cancellation, CF is set immediately. The bits are reset when a new transmission is requested by writing a 1 to the corresponding bit of register TXBAR..
FDCAN Tx buffer transmission interrupt enable register
Offset: 0xdc, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TIE
rw |
FDCAN Tx buffer cancellation finished interrupt enable register
Offset: 0xe0, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CFIE
rw |
FDCAN Tx event FIFO status register
Offset: 0xe4, size: 32, reset: 0x00000000, access: Unspecified
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TEFL
r |
EFF
r |
EFPI
r |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
EFGI
r |
EFFL
r |
Bits 0-2: Event FIFO fill level Number of elements stored in Tx event FIFO, range 0 to 3..
Bits 8-9: Event FIFO get index Tx Event FIFO read index pointer, range 0 to 3..
Bits 16-17: Event FIFO put index Tx Event FIFO write index pointer, range 0 to 3..
Bit 24: Event FIFO full.
Bit 25: Tx Event FIFO element lost This bit is a copy of interrupt flag IR[TEFL]. When IR[TEFL] is reset, this bit is also reset. 0 No Tx event FIFO element lost 1 Tx event FIFO element lost, also set after write attempt to Tx Event FIFO of size 0..
FDCAN Tx event FIFO acknowledge register
Offset: 0xe8, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EFAI
rw |
Bits 0-1: Event FIFO acknowledge index After the Host has read an element or a sequence of elements from the Tx event FIFO, it has to write the index of the last element read from Tx event FIFO to EFAI. This sets the Tx event FIFO get index TXEFS[EFGI] to EFAI + 1 and updates the FIFO 0 fill level TXEFS[EFFL]..
FDCAN CFG clock divider register
Offset: 0x100, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PDIV
rw |
Bits 0-3: input clock divider The APB clock could be divided prior to be used by the CAN sub system. The rate must be computed using the divider output clock. These are protected write (P) bits, which means that write access by the bits is possible only when the bit 1 [CCE] and bit 0 [INIT] of CCCR register are set to 1..
0x40022000: Flash
8/82 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | ACR | ||||||||||||||||||||||||||||||||
0x8 | KEYR | ||||||||||||||||||||||||||||||||
0xc | OPTKEYR | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | CR | ||||||||||||||||||||||||||||||||
0x18 | ECCR | ||||||||||||||||||||||||||||||||
0x1c | ECCR2 | ||||||||||||||||||||||||||||||||
0x20 | OPTR | ||||||||||||||||||||||||||||||||
0x24 | PCROP1ASR | ||||||||||||||||||||||||||||||||
0x28 | PCROP1AER | ||||||||||||||||||||||||||||||||
0x2c | WRP1AR | ||||||||||||||||||||||||||||||||
0x30 | WRP1BR | ||||||||||||||||||||||||||||||||
0x34 | PCROP1BSR | ||||||||||||||||||||||||||||||||
0x38 | PCROP1BER | ||||||||||||||||||||||||||||||||
0x44 | PCROP2ASR | ||||||||||||||||||||||||||||||||
0x48 | PCROP2AER | ||||||||||||||||||||||||||||||||
0x4c | WRP2AR | ||||||||||||||||||||||||||||||||
0x50 | WRP2BR | ||||||||||||||||||||||||||||||||
0x54 | PCROP2BSR | ||||||||||||||||||||||||||||||||
0x58 | PCROP2BER | ||||||||||||||||||||||||||||||||
0x80 | SECR |
Access control register
Offset: 0x0, size: 32, reset: 0x00000600, access: read-write
0/6 fields covered.
Flash key register
Offset: 0x8, size: 32, reset: 0x00000000, access: write-only
0/1 fields covered.
Option byte key register
Offset: 0xc, size: 32, reset: 0x00000000, access: write-only
0/1 fields covered.
Status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/13 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CFGBSY
rw |
BSY
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OPTVERR
rw |
RDERR
rw |
FASTERR
rw |
MISSERR
rw |
PGSERR
rw |
SIZERR
rw |
PGAERR
rw |
WRPERR
rw |
PROGERR
rw |
OPERR
rw |
EOP
rw |
Bit 0: End of operation.
Bit 1: Operation error.
Bit 3: Programming error.
Bit 4: Write protected error.
Bit 5: Programming alignment error.
Bit 6: Size error.
Bit 7: Programming sequence error.
Bit 8: Fast programming data miss error.
Bit 9: Fast programming error.
Bit 14: PCROP read error.
Bit 15: Option and Engineering bits loading validity error.
Bit 16: Busy.
Bit 18: Programming or erase configuration busy..
Flash control register
Offset: 0x14, size: 32, reset: 0xC0000000, access: read-write
0/14 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LOCK
rw |
OPTLOCK
rw |
SEC_PROT
rw |
OBL_LAUNCH
rw |
RDERRIE
rw |
ERRIE
rw |
EOPIE
rw |
FSTPG
rw |
OPTSTRT
rw |
STRT
rw |
||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PNB
rw |
MER
rw |
PER
rw |
PG
rw |
Bit 0: Programming.
Bit 1: Page erase.
Bit 2: Mass erase.
Bits 3-8: Page number.
Bit 16: Start.
Bit 17: Options modification start.
Bit 18: Fast programming.
Bit 24: End of operation interrupt enable.
Bit 25: Error interrupt enable.
Bit 26: PCROP read error interrupt enable.
Bit 27: Force the option byte loading.
Bit 28: Securable memory area protection enable.
Bit 30: Options Lock.
Bit 31: FLASH_CR Lock.
Flash ECC register
Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified
2/5 fields covered.
Flash ECC register 2
Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified
2/5 fields covered.
Flash option register
Offset: 0x20, size: 32, reset: 0xF0000000, access: read-write
0/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
IRHEN
rw |
NRST_MODE
rw |
nBOOT0
rw |
nBOOT1
rw |
nBOOT_SEL
rw |
RAM_PARITY_CHECK
rw |
WWDG_SW
rw |
IWDG_STDBY
rw |
IWDG_STOP
rw |
IWDG_SW
rw |
||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
nRSTS_HDW
rw |
nRST_STDBY
rw |
nRST_STOP
rw |
BORR_LEV
rw |
BORF_LEV
rw |
BOREN
rw |
RDP
rw |
Bits 0-7: Read protection level.
Bit 8: BOR reset Level.
Bits 9-10: These bits contain the VDD supply level threshold that activates the reset.
Bits 11-12: These bits contain the VDD supply level threshold that releases the reset..
Bit 13: nRST_STOP.
Bit 14: nRST_STDBY.
Bit 15: nRSTS_HDW.
Bit 16: Independent watchdog selection.
Bit 17: Independent watchdog counter freeze in Stop mode.
Bit 18: Independent watchdog counter freeze in Standby mode.
Bit 19: Window watchdog selection.
Bit 22: SRAM parity check control.
Bit 24: nBOOT_SEL.
Bit 25: Boot configuration.
Bit 26: nBOOT0 option bit.
Bits 27-28: NRST_MODE.
Bit 29: Internal reset holder enable bit.
Flash PCROP zone A Start address register
Offset: 0x24, size: 32, reset: 0xF0000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PCROP1A_STRT
r |
Flash PCROP zone A End address register
Offset: 0x28, size: 32, reset: 0xF0000000, access: read-only
2/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PCROP_RDP
r |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PCROP1A_END
r |
Flash WRP area A address register
Offset: 0x2c, size: 32, reset: 0x000000FF, access: read-write
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WRP1A_END
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
WRP1A_STRT
rw |
Flash WRP area B address register
Offset: 0x30, size: 32, reset: 0x000000FF, access: read-write
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WRP1B_END
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
WRP1B_STRT
rw |
Flash PCROP zone B Start address register
Offset: 0x34, size: 32, reset: 0xF0000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PCROP1B_STRT
r |
Flash PCROP area B End address register
Offset: 0x38, size: 32, reset: 0xF0000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PCROP1B_END
rw |
Flash PCROP2 area A start address register
Offset: 0x44, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PCROP2A_STRT
rw |
Flash PCROP2 area A end address register
Offset: 0x48, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PCROP2A_END
rw |
Flash WRP2 area A address register
Offset: 0x4c, size: 32, reset: 0x000000FF, access: read-write
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WRP2A_END
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
WRP2A_STRT
rw |
Flash WRP2 area B address register
Offset: 0x50, size: 32, reset: 0x000000FF, access: read-write
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WRP2B_END
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
WRP2B_STRT
rw |
FLASH PCROP2 area B start address register
Offset: 0x54, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PCROP2B_STRT
rw |
FLASH PCROP2 area B end address register
Offset: 0x58, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PCROP2B_END
rw |
0x50000000: General-purpose I/Os
177/177 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | MODER | ||||||||||||||||||||||||||||||||
0x4 | OTYPER | ||||||||||||||||||||||||||||||||
0x8 | OSPEEDR | ||||||||||||||||||||||||||||||||
0xc | PUPDR | ||||||||||||||||||||||||||||||||
0x10 | IDR | ||||||||||||||||||||||||||||||||
0x14 | ODR | ||||||||||||||||||||||||||||||||
0x18 | BSRR | ||||||||||||||||||||||||||||||||
0x1c | LCKR | ||||||||||||||||||||||||||||||||
0x20 | AFRL | ||||||||||||||||||||||||||||||||
0x24 | AFRH | ||||||||||||||||||||||||||||||||
0x28 | BRR |
GPIO port mode register
Offset: 0x0, size: 32, reset: 0xEBFFFFFF, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MODER[15]
rw |
MODER[14]
rw |
MODER[13]
rw |
MODER[12]
rw |
MODER[11]
rw |
MODER[10]
rw |
MODER[9]
rw |
MODER[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MODER[7]
rw |
MODER[6]
rw |
MODER[5]
rw |
MODER[4]
rw |
MODER[3]
rw |
MODER[2]
rw |
MODER[1]
rw |
MODER[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
GPIO port output type register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OT[15]
rw |
OT[14]
rw |
OT[13]
rw |
OT[12]
rw |
OT[11]
rw |
OT[10]
rw |
OT[9]
rw |
OT[8]
rw |
OT[7]
rw |
OT[6]
rw |
OT[5]
rw |
OT[4]
rw |
OT[3]
rw |
OT[2]
rw |
OT[1]
rw |
OT[0]
rw |
Bit 0: Port x configuration pin 0.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 1: Port x configuration pin 1.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 2: Port x configuration pin 2.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 3: Port x configuration pin 3.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 4: Port x configuration pin 4.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 5: Port x configuration pin 5.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 6: Port x configuration pin 6.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 7: Port x configuration pin 7.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 8: Port x configuration pin 8.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 9: Port x configuration pin 9.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 10: Port x configuration pin 10.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 11: Port x configuration pin 11.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 12: Port x configuration pin 12.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 13: Port x configuration pin 13.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 14: Port x configuration pin 14.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 15: Port x configuration pin 15.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
GPIO port output speed register
Offset: 0x8, size: 32, reset: 0x0C000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OSPEEDR[15]
rw |
OSPEEDR[14]
rw |
OSPEEDR[13]
rw |
OSPEEDR[12]
rw |
OSPEEDR[11]
rw |
OSPEEDR[10]
rw |
OSPEEDR[9]
rw |
OSPEEDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OSPEEDR[7]
rw |
OSPEEDR[6]
rw |
OSPEEDR[5]
rw |
OSPEEDR[4]
rw |
OSPEEDR[3]
rw |
OSPEEDR[2]
rw |
OSPEEDR[1]
rw |
OSPEEDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
GPIO port pull-up/pull-down register
Offset: 0xc, size: 32, reset: 0x24000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PUPDR[15]
rw |
PUPDR[14]
rw |
PUPDR[13]
rw |
PUPDR[12]
rw |
PUPDR[11]
rw |
PUPDR[10]
rw |
PUPDR[9]
rw |
PUPDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PUPDR[7]
rw |
PUPDR[6]
rw |
PUPDR[5]
rw |
PUPDR[4]
rw |
PUPDR[3]
rw |
PUPDR[2]
rw |
PUPDR[1]
rw |
PUPDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
GPIO port input data register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
IDR[15]
r |
IDR[14]
r |
IDR[13]
r |
IDR[12]
r |
IDR[11]
r |
IDR[10]
r |
IDR[9]
r |
IDR[8]
r |
IDR[7]
r |
IDR[6]
r |
IDR[5]
r |
IDR[4]
r |
IDR[3]
r |
IDR[2]
r |
IDR[1]
r |
IDR[0]
r |
Bit 0: Port input data pin 0.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 1: Port input data pin 1.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 2: Port input data pin 2.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 3: Port input data pin 3.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 4: Port input data pin 4.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 5: Port input data pin 5.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 6: Port input data pin 6.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 7: Port input data pin 7.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 8: Port input data pin 8.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 9: Port input data pin 9.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 10: Port input data pin 10.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 11: Port input data pin 11.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 12: Port input data pin 12.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 13: Port input data pin 13.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 14: Port input data pin 14.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 15: Port input data pin 15.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
GPIO port output data register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ODR[15]
rw |
ODR[14]
rw |
ODR[13]
rw |
ODR[12]
rw |
ODR[11]
rw |
ODR[10]
rw |
ODR[9]
rw |
ODR[8]
rw |
ODR[7]
rw |
ODR[6]
rw |
ODR[5]
rw |
ODR[4]
rw |
ODR[3]
rw |
ODR[2]
rw |
ODR[1]
rw |
ODR[0]
rw |
Bit 0: Port output data pin 0.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 1: Port output data pin 1.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 2: Port output data pin 2.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 3: Port output data pin 3.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 4: Port output data pin 4.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 5: Port output data pin 5.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 6: Port output data pin 6.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 7: Port output data pin 7.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 8: Port output data pin 8.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 9: Port output data pin 9.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 10: Port output data pin 10.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 11: Port output data pin 11.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 12: Port output data pin 12.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 13: Port output data pin 13.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 14: Port output data pin 14.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 15: Port output data pin 15.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
GPIO port bit set/reset register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
32/32 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BS[15]
w |
BS[14]
w |
BS[13]
w |
BS[12]
w |
BS[11]
w |
BS[10]
w |
BS[9]
w |
BS[8]
w |
BS[7]
w |
BS[6]
w |
BS[5]
w |
BS[4]
w |
BS[3]
w |
BS[2]
w |
BS[1]
w |
BS[0]
w |
Bit 0: Port x set pin 0.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 1: Port x set pin 1.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 2: Port x set pin 2.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 3: Port x set pin 3.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 4: Port x set pin 4.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 5: Port x set pin 5.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 6: Port x set pin 6.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 7: Port x set pin 7.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 8: Port x set pin 8.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 9: Port x set pin 9.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 10: Port x set pin 10.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 11: Port x set pin 11.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 12: Port x set pin 12.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 13: Port x set pin 13.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 14: Port x set pin 14.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 15: Port x set pin 15.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 16: Port x reset pin 0.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 17: Port x reset pin 1.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 18: Port x reset pin 2.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 19: Port x reset pin 3.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 20: Port x reset pin 4.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 21: Port x reset pin 5.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 22: Port x reset pin 6.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 23: Port x reset pin 7.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 24: Port x reset pin 8.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 25: Port x reset pin 9.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 26: Port x reset pin 10.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 27: Port x reset pin 11.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 28: Port x reset pin 12.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 29: Port x reset pin 13.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 30: Port x reset pin 14.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 31: Port x reset pin 15.
Allowed values:
1: Reset: Resets the corresponding ODx bit
GPIO port configuration lock register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LCKK
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
LCK[15]
rw |
LCK[14]
rw |
LCK[13]
rw |
LCK[12]
rw |
LCK[11]
rw |
LCK[10]
rw |
LCK[9]
rw |
LCK[8]
rw |
LCK[7]
rw |
LCK[6]
rw |
LCK[5]
rw |
LCK[4]
rw |
LCK[3]
rw |
LCK[2]
rw |
LCK[1]
rw |
LCK[0]
rw |
Bit 0: Port x lock pin 0.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 1: Port x lock pin 1.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 2: Port x lock pin 2.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 3: Port x lock pin 3.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 4: Port x lock pin 4.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 5: Port x lock pin 5.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 6: Port x lock pin 6.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 7: Port x lock pin 7.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 8: Port x lock pin 8.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 9: Port x lock pin 9.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 10: Port x lock pin 10.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 11: Port x lock pin 11.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 12: Port x lock pin 12.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 13: Port x lock pin 13.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 14: Port x lock pin 14.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 15: Port x lock pin 15.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 16: Port x lock bit y (y= 0..15).
Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active
GPIO alternate function low register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL7]
rw |
AFR[EL6]
rw |
AFR[EL5]
rw |
AFR[EL4]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL3]
rw |
AFR[EL2]
rw |
AFR[EL1]
rw |
AFR[EL0]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
GPIO alternate function high register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL15]
rw |
AFR[EL14]
rw |
AFR[EL13]
rw |
AFR[EL12]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL11]
rw |
AFR[EL10]
rw |
AFR[EL9]
rw |
AFR[EL8]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
port bit reset register
Offset: 0x28, size: 32, reset: 0x00000000, access: write-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
Bit 0: Port x reset pin 0.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 1: Port x reset pin 1.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 2: Port x reset pin 2.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 3: Port x reset pin 3.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 4: Port x reset pin 4.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 5: Port x reset pin 5.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 6: Port x reset pin 6.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 7: Port x reset pin 7.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 8: Port x reset pin 8.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 9: Port x reset pin 9.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 10: Port x reset pin 10.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 11: Port x reset pin 11.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 12: Port x reset pin 12.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 13: Port x reset pin 13.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 14: Port x reset pin 14.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 15: Port x reset pin 15.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
0x50000400: General-purpose I/Os
177/177 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | MODER | ||||||||||||||||||||||||||||||||
0x4 | OTYPER | ||||||||||||||||||||||||||||||||
0x8 | OSPEEDR | ||||||||||||||||||||||||||||||||
0xc | PUPDR | ||||||||||||||||||||||||||||||||
0x10 | IDR | ||||||||||||||||||||||||||||||||
0x14 | ODR | ||||||||||||||||||||||||||||||||
0x18 | BSRR | ||||||||||||||||||||||||||||||||
0x1c | LCKR | ||||||||||||||||||||||||||||||||
0x20 | AFRL | ||||||||||||||||||||||||||||||||
0x24 | AFRH | ||||||||||||||||||||||||||||||||
0x28 | BRR |
GPIO port mode register
Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MODER[15]
rw |
MODER[14]
rw |
MODER[13]
rw |
MODER[12]
rw |
MODER[11]
rw |
MODER[10]
rw |
MODER[9]
rw |
MODER[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MODER[7]
rw |
MODER[6]
rw |
MODER[5]
rw |
MODER[4]
rw |
MODER[3]
rw |
MODER[2]
rw |
MODER[1]
rw |
MODER[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
GPIO port output type register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OT[15]
rw |
OT[14]
rw |
OT[13]
rw |
OT[12]
rw |
OT[11]
rw |
OT[10]
rw |
OT[9]
rw |
OT[8]
rw |
OT[7]
rw |
OT[6]
rw |
OT[5]
rw |
OT[4]
rw |
OT[3]
rw |
OT[2]
rw |
OT[1]
rw |
OT[0]
rw |
Bit 0: Port x configuration pin 0.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 1: Port x configuration pin 1.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 2: Port x configuration pin 2.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 3: Port x configuration pin 3.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 4: Port x configuration pin 4.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 5: Port x configuration pin 5.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 6: Port x configuration pin 6.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 7: Port x configuration pin 7.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 8: Port x configuration pin 8.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 9: Port x configuration pin 9.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 10: Port x configuration pin 10.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 11: Port x configuration pin 11.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 12: Port x configuration pin 12.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 13: Port x configuration pin 13.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 14: Port x configuration pin 14.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 15: Port x configuration pin 15.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
GPIO port output speed register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OSPEEDR[15]
rw |
OSPEEDR[14]
rw |
OSPEEDR[13]
rw |
OSPEEDR[12]
rw |
OSPEEDR[11]
rw |
OSPEEDR[10]
rw |
OSPEEDR[9]
rw |
OSPEEDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OSPEEDR[7]
rw |
OSPEEDR[6]
rw |
OSPEEDR[5]
rw |
OSPEEDR[4]
rw |
OSPEEDR[3]
rw |
OSPEEDR[2]
rw |
OSPEEDR[1]
rw |
OSPEEDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
GPIO port pull-up/pull-down register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PUPDR[15]
rw |
PUPDR[14]
rw |
PUPDR[13]
rw |
PUPDR[12]
rw |
PUPDR[11]
rw |
PUPDR[10]
rw |
PUPDR[9]
rw |
PUPDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PUPDR[7]
rw |
PUPDR[6]
rw |
PUPDR[5]
rw |
PUPDR[4]
rw |
PUPDR[3]
rw |
PUPDR[2]
rw |
PUPDR[1]
rw |
PUPDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
GPIO port input data register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
IDR[15]
r |
IDR[14]
r |
IDR[13]
r |
IDR[12]
r |
IDR[11]
r |
IDR[10]
r |
IDR[9]
r |
IDR[8]
r |
IDR[7]
r |
IDR[6]
r |
IDR[5]
r |
IDR[4]
r |
IDR[3]
r |
IDR[2]
r |
IDR[1]
r |
IDR[0]
r |
Bit 0: Port input data pin 0.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 1: Port input data pin 1.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 2: Port input data pin 2.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 3: Port input data pin 3.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 4: Port input data pin 4.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 5: Port input data pin 5.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 6: Port input data pin 6.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 7: Port input data pin 7.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 8: Port input data pin 8.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 9: Port input data pin 9.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 10: Port input data pin 10.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 11: Port input data pin 11.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 12: Port input data pin 12.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 13: Port input data pin 13.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 14: Port input data pin 14.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 15: Port input data pin 15.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
GPIO port output data register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ODR[15]
rw |
ODR[14]
rw |
ODR[13]
rw |
ODR[12]
rw |
ODR[11]
rw |
ODR[10]
rw |
ODR[9]
rw |
ODR[8]
rw |
ODR[7]
rw |
ODR[6]
rw |
ODR[5]
rw |
ODR[4]
rw |
ODR[3]
rw |
ODR[2]
rw |
ODR[1]
rw |
ODR[0]
rw |
Bit 0: Port output data pin 0.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 1: Port output data pin 1.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 2: Port output data pin 2.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 3: Port output data pin 3.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 4: Port output data pin 4.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 5: Port output data pin 5.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 6: Port output data pin 6.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 7: Port output data pin 7.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 8: Port output data pin 8.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 9: Port output data pin 9.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 10: Port output data pin 10.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 11: Port output data pin 11.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 12: Port output data pin 12.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 13: Port output data pin 13.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 14: Port output data pin 14.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 15: Port output data pin 15.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
GPIO port bit set/reset register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
32/32 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BS[15]
w |
BS[14]
w |
BS[13]
w |
BS[12]
w |
BS[11]
w |
BS[10]
w |
BS[9]
w |
BS[8]
w |
BS[7]
w |
BS[6]
w |
BS[5]
w |
BS[4]
w |
BS[3]
w |
BS[2]
w |
BS[1]
w |
BS[0]
w |
Bit 0: Port x set pin 0.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 1: Port x set pin 1.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 2: Port x set pin 2.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 3: Port x set pin 3.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 4: Port x set pin 4.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 5: Port x set pin 5.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 6: Port x set pin 6.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 7: Port x set pin 7.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 8: Port x set pin 8.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 9: Port x set pin 9.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 10: Port x set pin 10.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 11: Port x set pin 11.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 12: Port x set pin 12.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 13: Port x set pin 13.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 14: Port x set pin 14.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 15: Port x set pin 15.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 16: Port x reset pin 0.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 17: Port x reset pin 1.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 18: Port x reset pin 2.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 19: Port x reset pin 3.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 20: Port x reset pin 4.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 21: Port x reset pin 5.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 22: Port x reset pin 6.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 23: Port x reset pin 7.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 24: Port x reset pin 8.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 25: Port x reset pin 9.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 26: Port x reset pin 10.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 27: Port x reset pin 11.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 28: Port x reset pin 12.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 29: Port x reset pin 13.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 30: Port x reset pin 14.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 31: Port x reset pin 15.
Allowed values:
1: Reset: Resets the corresponding ODx bit
GPIO port configuration lock register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LCKK
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
LCK[15]
rw |
LCK[14]
rw |
LCK[13]
rw |
LCK[12]
rw |
LCK[11]
rw |
LCK[10]
rw |
LCK[9]
rw |
LCK[8]
rw |
LCK[7]
rw |
LCK[6]
rw |
LCK[5]
rw |
LCK[4]
rw |
LCK[3]
rw |
LCK[2]
rw |
LCK[1]
rw |
LCK[0]
rw |
Bit 0: Port x lock pin 0.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 1: Port x lock pin 1.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 2: Port x lock pin 2.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 3: Port x lock pin 3.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 4: Port x lock pin 4.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 5: Port x lock pin 5.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 6: Port x lock pin 6.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 7: Port x lock pin 7.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 8: Port x lock pin 8.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 9: Port x lock pin 9.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 10: Port x lock pin 10.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 11: Port x lock pin 11.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 12: Port x lock pin 12.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 13: Port x lock pin 13.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 14: Port x lock pin 14.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 15: Port x lock pin 15.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 16: Port x lock bit y (y= 0..15).
Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active
GPIO alternate function low register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL7]
rw |
AFR[EL6]
rw |
AFR[EL5]
rw |
AFR[EL4]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL3]
rw |
AFR[EL2]
rw |
AFR[EL1]
rw |
AFR[EL0]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
GPIO alternate function high register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL15]
rw |
AFR[EL14]
rw |
AFR[EL13]
rw |
AFR[EL12]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL11]
rw |
AFR[EL10]
rw |
AFR[EL9]
rw |
AFR[EL8]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
port bit reset register
Offset: 0x28, size: 32, reset: 0x00000000, access: write-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
Bit 0: Port x reset pin 0.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 1: Port x reset pin 1.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 2: Port x reset pin 2.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 3: Port x reset pin 3.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 4: Port x reset pin 4.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 5: Port x reset pin 5.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 6: Port x reset pin 6.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 7: Port x reset pin 7.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 8: Port x reset pin 8.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 9: Port x reset pin 9.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 10: Port x reset pin 10.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 11: Port x reset pin 11.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 12: Port x reset pin 12.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 13: Port x reset pin 13.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 14: Port x reset pin 14.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 15: Port x reset pin 15.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
0x50000800: General-purpose I/Os
177/177 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | MODER | ||||||||||||||||||||||||||||||||
0x4 | OTYPER | ||||||||||||||||||||||||||||||||
0x8 | OSPEEDR | ||||||||||||||||||||||||||||||||
0xc | PUPDR | ||||||||||||||||||||||||||||||||
0x10 | IDR | ||||||||||||||||||||||||||||||||
0x14 | ODR | ||||||||||||||||||||||||||||||||
0x18 | BSRR | ||||||||||||||||||||||||||||||||
0x1c | LCKR | ||||||||||||||||||||||||||||||||
0x20 | AFRL | ||||||||||||||||||||||||||||||||
0x24 | AFRH | ||||||||||||||||||||||||||||||||
0x28 | BRR |
GPIO port mode register
Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MODER[15]
rw |
MODER[14]
rw |
MODER[13]
rw |
MODER[12]
rw |
MODER[11]
rw |
MODER[10]
rw |
MODER[9]
rw |
MODER[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MODER[7]
rw |
MODER[6]
rw |
MODER[5]
rw |
MODER[4]
rw |
MODER[3]
rw |
MODER[2]
rw |
MODER[1]
rw |
MODER[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
GPIO port output type register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OT[15]
rw |
OT[14]
rw |
OT[13]
rw |
OT[12]
rw |
OT[11]
rw |
OT[10]
rw |
OT[9]
rw |
OT[8]
rw |
OT[7]
rw |
OT[6]
rw |
OT[5]
rw |
OT[4]
rw |
OT[3]
rw |
OT[2]
rw |
OT[1]
rw |
OT[0]
rw |
Bit 0: Port x configuration pin 0.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 1: Port x configuration pin 1.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 2: Port x configuration pin 2.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 3: Port x configuration pin 3.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 4: Port x configuration pin 4.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 5: Port x configuration pin 5.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 6: Port x configuration pin 6.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 7: Port x configuration pin 7.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 8: Port x configuration pin 8.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 9: Port x configuration pin 9.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 10: Port x configuration pin 10.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 11: Port x configuration pin 11.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 12: Port x configuration pin 12.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 13: Port x configuration pin 13.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 14: Port x configuration pin 14.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 15: Port x configuration pin 15.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
GPIO port output speed register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OSPEEDR[15]
rw |
OSPEEDR[14]
rw |
OSPEEDR[13]
rw |
OSPEEDR[12]
rw |
OSPEEDR[11]
rw |
OSPEEDR[10]
rw |
OSPEEDR[9]
rw |
OSPEEDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OSPEEDR[7]
rw |
OSPEEDR[6]
rw |
OSPEEDR[5]
rw |
OSPEEDR[4]
rw |
OSPEEDR[3]
rw |
OSPEEDR[2]
rw |
OSPEEDR[1]
rw |
OSPEEDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
GPIO port pull-up/pull-down register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PUPDR[15]
rw |
PUPDR[14]
rw |
PUPDR[13]
rw |
PUPDR[12]
rw |
PUPDR[11]
rw |
PUPDR[10]
rw |
PUPDR[9]
rw |
PUPDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PUPDR[7]
rw |
PUPDR[6]
rw |
PUPDR[5]
rw |
PUPDR[4]
rw |
PUPDR[3]
rw |
PUPDR[2]
rw |
PUPDR[1]
rw |
PUPDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
GPIO port input data register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
IDR[15]
r |
IDR[14]
r |
IDR[13]
r |
IDR[12]
r |
IDR[11]
r |
IDR[10]
r |
IDR[9]
r |
IDR[8]
r |
IDR[7]
r |
IDR[6]
r |
IDR[5]
r |
IDR[4]
r |
IDR[3]
r |
IDR[2]
r |
IDR[1]
r |
IDR[0]
r |
Bit 0: Port input data pin 0.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 1: Port input data pin 1.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 2: Port input data pin 2.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 3: Port input data pin 3.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 4: Port input data pin 4.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 5: Port input data pin 5.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 6: Port input data pin 6.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 7: Port input data pin 7.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 8: Port input data pin 8.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 9: Port input data pin 9.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 10: Port input data pin 10.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 11: Port input data pin 11.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 12: Port input data pin 12.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 13: Port input data pin 13.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 14: Port input data pin 14.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 15: Port input data pin 15.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
GPIO port output data register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ODR[15]
rw |
ODR[14]
rw |
ODR[13]
rw |
ODR[12]
rw |
ODR[11]
rw |
ODR[10]
rw |
ODR[9]
rw |
ODR[8]
rw |
ODR[7]
rw |
ODR[6]
rw |
ODR[5]
rw |
ODR[4]
rw |
ODR[3]
rw |
ODR[2]
rw |
ODR[1]
rw |
ODR[0]
rw |
Bit 0: Port output data pin 0.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 1: Port output data pin 1.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 2: Port output data pin 2.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 3: Port output data pin 3.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 4: Port output data pin 4.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 5: Port output data pin 5.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 6: Port output data pin 6.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 7: Port output data pin 7.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 8: Port output data pin 8.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 9: Port output data pin 9.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 10: Port output data pin 10.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 11: Port output data pin 11.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 12: Port output data pin 12.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 13: Port output data pin 13.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 14: Port output data pin 14.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 15: Port output data pin 15.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
GPIO port bit set/reset register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
32/32 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BS[15]
w |
BS[14]
w |
BS[13]
w |
BS[12]
w |
BS[11]
w |
BS[10]
w |
BS[9]
w |
BS[8]
w |
BS[7]
w |
BS[6]
w |
BS[5]
w |
BS[4]
w |
BS[3]
w |
BS[2]
w |
BS[1]
w |
BS[0]
w |
Bit 0: Port x set pin 0.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 1: Port x set pin 1.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 2: Port x set pin 2.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 3: Port x set pin 3.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 4: Port x set pin 4.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 5: Port x set pin 5.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 6: Port x set pin 6.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 7: Port x set pin 7.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 8: Port x set pin 8.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 9: Port x set pin 9.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 10: Port x set pin 10.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 11: Port x set pin 11.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 12: Port x set pin 12.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 13: Port x set pin 13.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 14: Port x set pin 14.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 15: Port x set pin 15.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 16: Port x reset pin 0.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 17: Port x reset pin 1.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 18: Port x reset pin 2.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 19: Port x reset pin 3.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 20: Port x reset pin 4.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 21: Port x reset pin 5.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 22: Port x reset pin 6.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 23: Port x reset pin 7.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 24: Port x reset pin 8.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 25: Port x reset pin 9.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 26: Port x reset pin 10.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 27: Port x reset pin 11.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 28: Port x reset pin 12.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 29: Port x reset pin 13.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 30: Port x reset pin 14.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 31: Port x reset pin 15.
Allowed values:
1: Reset: Resets the corresponding ODx bit
GPIO port configuration lock register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LCKK
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
LCK[15]
rw |
LCK[14]
rw |
LCK[13]
rw |
LCK[12]
rw |
LCK[11]
rw |
LCK[10]
rw |
LCK[9]
rw |
LCK[8]
rw |
LCK[7]
rw |
LCK[6]
rw |
LCK[5]
rw |
LCK[4]
rw |
LCK[3]
rw |
LCK[2]
rw |
LCK[1]
rw |
LCK[0]
rw |
Bit 0: Port x lock pin 0.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 1: Port x lock pin 1.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 2: Port x lock pin 2.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 3: Port x lock pin 3.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 4: Port x lock pin 4.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 5: Port x lock pin 5.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 6: Port x lock pin 6.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 7: Port x lock pin 7.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 8: Port x lock pin 8.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 9: Port x lock pin 9.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 10: Port x lock pin 10.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 11: Port x lock pin 11.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 12: Port x lock pin 12.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 13: Port x lock pin 13.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 14: Port x lock pin 14.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 15: Port x lock pin 15.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 16: Port x lock bit y (y= 0..15).
Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active
GPIO alternate function low register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL7]
rw |
AFR[EL6]
rw |
AFR[EL5]
rw |
AFR[EL4]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL3]
rw |
AFR[EL2]
rw |
AFR[EL1]
rw |
AFR[EL0]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
GPIO alternate function high register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL15]
rw |
AFR[EL14]
rw |
AFR[EL13]
rw |
AFR[EL12]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL11]
rw |
AFR[EL10]
rw |
AFR[EL9]
rw |
AFR[EL8]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
port bit reset register
Offset: 0x28, size: 32, reset: 0x00000000, access: write-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
Bit 0: Port x reset pin 0.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 1: Port x reset pin 1.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 2: Port x reset pin 2.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 3: Port x reset pin 3.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 4: Port x reset pin 4.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 5: Port x reset pin 5.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 6: Port x reset pin 6.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 7: Port x reset pin 7.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 8: Port x reset pin 8.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 9: Port x reset pin 9.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 10: Port x reset pin 10.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 11: Port x reset pin 11.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 12: Port x reset pin 12.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 13: Port x reset pin 13.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 14: Port x reset pin 14.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 15: Port x reset pin 15.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
0x50000c00: General-purpose I/Os
177/177 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | MODER | ||||||||||||||||||||||||||||||||
0x4 | OTYPER | ||||||||||||||||||||||||||||||||
0x8 | OSPEEDR | ||||||||||||||||||||||||||||||||
0xc | PUPDR | ||||||||||||||||||||||||||||||||
0x10 | IDR | ||||||||||||||||||||||||||||||||
0x14 | ODR | ||||||||||||||||||||||||||||||||
0x18 | BSRR | ||||||||||||||||||||||||||||||||
0x1c | LCKR | ||||||||||||||||||||||||||||||||
0x20 | AFRL | ||||||||||||||||||||||||||||||||
0x24 | AFRH | ||||||||||||||||||||||||||||||||
0x28 | BRR |
GPIO port mode register
Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MODER[15]
rw |
MODER[14]
rw |
MODER[13]
rw |
MODER[12]
rw |
MODER[11]
rw |
MODER[10]
rw |
MODER[9]
rw |
MODER[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MODER[7]
rw |
MODER[6]
rw |
MODER[5]
rw |
MODER[4]
rw |
MODER[3]
rw |
MODER[2]
rw |
MODER[1]
rw |
MODER[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
GPIO port output type register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OT[15]
rw |
OT[14]
rw |
OT[13]
rw |
OT[12]
rw |
OT[11]
rw |
OT[10]
rw |
OT[9]
rw |
OT[8]
rw |
OT[7]
rw |
OT[6]
rw |
OT[5]
rw |
OT[4]
rw |
OT[3]
rw |
OT[2]
rw |
OT[1]
rw |
OT[0]
rw |
Bit 0: Port x configuration pin 0.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 1: Port x configuration pin 1.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 2: Port x configuration pin 2.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 3: Port x configuration pin 3.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 4: Port x configuration pin 4.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 5: Port x configuration pin 5.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 6: Port x configuration pin 6.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 7: Port x configuration pin 7.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 8: Port x configuration pin 8.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 9: Port x configuration pin 9.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 10: Port x configuration pin 10.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 11: Port x configuration pin 11.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 12: Port x configuration pin 12.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 13: Port x configuration pin 13.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 14: Port x configuration pin 14.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 15: Port x configuration pin 15.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
GPIO port output speed register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OSPEEDR[15]
rw |
OSPEEDR[14]
rw |
OSPEEDR[13]
rw |
OSPEEDR[12]
rw |
OSPEEDR[11]
rw |
OSPEEDR[10]
rw |
OSPEEDR[9]
rw |
OSPEEDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OSPEEDR[7]
rw |
OSPEEDR[6]
rw |
OSPEEDR[5]
rw |
OSPEEDR[4]
rw |
OSPEEDR[3]
rw |
OSPEEDR[2]
rw |
OSPEEDR[1]
rw |
OSPEEDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
GPIO port pull-up/pull-down register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PUPDR[15]
rw |
PUPDR[14]
rw |
PUPDR[13]
rw |
PUPDR[12]
rw |
PUPDR[11]
rw |
PUPDR[10]
rw |
PUPDR[9]
rw |
PUPDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PUPDR[7]
rw |
PUPDR[6]
rw |
PUPDR[5]
rw |
PUPDR[4]
rw |
PUPDR[3]
rw |
PUPDR[2]
rw |
PUPDR[1]
rw |
PUPDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
GPIO port input data register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
IDR[15]
r |
IDR[14]
r |
IDR[13]
r |
IDR[12]
r |
IDR[11]
r |
IDR[10]
r |
IDR[9]
r |
IDR[8]
r |
IDR[7]
r |
IDR[6]
r |
IDR[5]
r |
IDR[4]
r |
IDR[3]
r |
IDR[2]
r |
IDR[1]
r |
IDR[0]
r |
Bit 0: Port input data pin 0.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 1: Port input data pin 1.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 2: Port input data pin 2.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 3: Port input data pin 3.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 4: Port input data pin 4.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 5: Port input data pin 5.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 6: Port input data pin 6.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 7: Port input data pin 7.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 8: Port input data pin 8.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 9: Port input data pin 9.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 10: Port input data pin 10.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 11: Port input data pin 11.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 12: Port input data pin 12.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 13: Port input data pin 13.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 14: Port input data pin 14.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 15: Port input data pin 15.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
GPIO port output data register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ODR[15]
rw |
ODR[14]
rw |
ODR[13]
rw |
ODR[12]
rw |
ODR[11]
rw |
ODR[10]
rw |
ODR[9]
rw |
ODR[8]
rw |
ODR[7]
rw |
ODR[6]
rw |
ODR[5]
rw |
ODR[4]
rw |
ODR[3]
rw |
ODR[2]
rw |
ODR[1]
rw |
ODR[0]
rw |
Bit 0: Port output data pin 0.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 1: Port output data pin 1.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 2: Port output data pin 2.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 3: Port output data pin 3.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 4: Port output data pin 4.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 5: Port output data pin 5.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 6: Port output data pin 6.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 7: Port output data pin 7.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 8: Port output data pin 8.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 9: Port output data pin 9.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 10: Port output data pin 10.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 11: Port output data pin 11.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 12: Port output data pin 12.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 13: Port output data pin 13.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 14: Port output data pin 14.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 15: Port output data pin 15.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
GPIO port bit set/reset register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
32/32 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BS[15]
w |
BS[14]
w |
BS[13]
w |
BS[12]
w |
BS[11]
w |
BS[10]
w |
BS[9]
w |
BS[8]
w |
BS[7]
w |
BS[6]
w |
BS[5]
w |
BS[4]
w |
BS[3]
w |
BS[2]
w |
BS[1]
w |
BS[0]
w |
Bit 0: Port x set pin 0.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 1: Port x set pin 1.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 2: Port x set pin 2.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 3: Port x set pin 3.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 4: Port x set pin 4.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 5: Port x set pin 5.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 6: Port x set pin 6.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 7: Port x set pin 7.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 8: Port x set pin 8.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 9: Port x set pin 9.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 10: Port x set pin 10.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 11: Port x set pin 11.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 12: Port x set pin 12.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 13: Port x set pin 13.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 14: Port x set pin 14.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 15: Port x set pin 15.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 16: Port x reset pin 0.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 17: Port x reset pin 1.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 18: Port x reset pin 2.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 19: Port x reset pin 3.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 20: Port x reset pin 4.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 21: Port x reset pin 5.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 22: Port x reset pin 6.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 23: Port x reset pin 7.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 24: Port x reset pin 8.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 25: Port x reset pin 9.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 26: Port x reset pin 10.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 27: Port x reset pin 11.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 28: Port x reset pin 12.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 29: Port x reset pin 13.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 30: Port x reset pin 14.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 31: Port x reset pin 15.
Allowed values:
1: Reset: Resets the corresponding ODx bit
GPIO port configuration lock register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LCKK
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
LCK[15]
rw |
LCK[14]
rw |
LCK[13]
rw |
LCK[12]
rw |
LCK[11]
rw |
LCK[10]
rw |
LCK[9]
rw |
LCK[8]
rw |
LCK[7]
rw |
LCK[6]
rw |
LCK[5]
rw |
LCK[4]
rw |
LCK[3]
rw |
LCK[2]
rw |
LCK[1]
rw |
LCK[0]
rw |
Bit 0: Port x lock pin 0.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 1: Port x lock pin 1.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 2: Port x lock pin 2.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 3: Port x lock pin 3.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 4: Port x lock pin 4.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 5: Port x lock pin 5.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 6: Port x lock pin 6.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 7: Port x lock pin 7.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 8: Port x lock pin 8.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 9: Port x lock pin 9.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 10: Port x lock pin 10.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 11: Port x lock pin 11.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 12: Port x lock pin 12.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 13: Port x lock pin 13.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 14: Port x lock pin 14.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 15: Port x lock pin 15.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 16: Port x lock bit y (y= 0..15).
Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active
GPIO alternate function low register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL7]
rw |
AFR[EL6]
rw |
AFR[EL5]
rw |
AFR[EL4]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL3]
rw |
AFR[EL2]
rw |
AFR[EL1]
rw |
AFR[EL0]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
GPIO alternate function high register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL15]
rw |
AFR[EL14]
rw |
AFR[EL13]
rw |
AFR[EL12]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL11]
rw |
AFR[EL10]
rw |
AFR[EL9]
rw |
AFR[EL8]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
port bit reset register
Offset: 0x28, size: 32, reset: 0x00000000, access: write-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
Bit 0: Port x reset pin 0.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 1: Port x reset pin 1.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 2: Port x reset pin 2.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 3: Port x reset pin 3.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 4: Port x reset pin 4.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 5: Port x reset pin 5.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 6: Port x reset pin 6.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 7: Port x reset pin 7.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 8: Port x reset pin 8.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 9: Port x reset pin 9.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 10: Port x reset pin 10.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 11: Port x reset pin 11.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 12: Port x reset pin 12.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 13: Port x reset pin 13.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 14: Port x reset pin 14.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 15: Port x reset pin 15.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
0x50001000: General-purpose I/Os
177/177 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | MODER | ||||||||||||||||||||||||||||||||
0x4 | OTYPER | ||||||||||||||||||||||||||||||||
0x8 | OSPEEDR | ||||||||||||||||||||||||||||||||
0xc | PUPDR | ||||||||||||||||||||||||||||||||
0x10 | IDR | ||||||||||||||||||||||||||||||||
0x14 | ODR | ||||||||||||||||||||||||||||||||
0x18 | BSRR | ||||||||||||||||||||||||||||||||
0x1c | LCKR | ||||||||||||||||||||||||||||||||
0x20 | AFRL | ||||||||||||||||||||||||||||||||
0x24 | AFRH | ||||||||||||||||||||||||||||||||
0x28 | BRR |
GPIO port mode register
Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MODER[15]
rw |
MODER[14]
rw |
MODER[13]
rw |
MODER[12]
rw |
MODER[11]
rw |
MODER[10]
rw |
MODER[9]
rw |
MODER[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MODER[7]
rw |
MODER[6]
rw |
MODER[5]
rw |
MODER[4]
rw |
MODER[3]
rw |
MODER[2]
rw |
MODER[1]
rw |
MODER[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
GPIO port output type register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OT[15]
rw |
OT[14]
rw |
OT[13]
rw |
OT[12]
rw |
OT[11]
rw |
OT[10]
rw |
OT[9]
rw |
OT[8]
rw |
OT[7]
rw |
OT[6]
rw |
OT[5]
rw |
OT[4]
rw |
OT[3]
rw |
OT[2]
rw |
OT[1]
rw |
OT[0]
rw |
Bit 0: Port x configuration pin 0.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 1: Port x configuration pin 1.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 2: Port x configuration pin 2.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 3: Port x configuration pin 3.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 4: Port x configuration pin 4.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 5: Port x configuration pin 5.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 6: Port x configuration pin 6.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 7: Port x configuration pin 7.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 8: Port x configuration pin 8.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 9: Port x configuration pin 9.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 10: Port x configuration pin 10.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 11: Port x configuration pin 11.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 12: Port x configuration pin 12.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 13: Port x configuration pin 13.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 14: Port x configuration pin 14.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 15: Port x configuration pin 15.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
GPIO port output speed register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OSPEEDR[15]
rw |
OSPEEDR[14]
rw |
OSPEEDR[13]
rw |
OSPEEDR[12]
rw |
OSPEEDR[11]
rw |
OSPEEDR[10]
rw |
OSPEEDR[9]
rw |
OSPEEDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OSPEEDR[7]
rw |
OSPEEDR[6]
rw |
OSPEEDR[5]
rw |
OSPEEDR[4]
rw |
OSPEEDR[3]
rw |
OSPEEDR[2]
rw |
OSPEEDR[1]
rw |
OSPEEDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
GPIO port pull-up/pull-down register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PUPDR[15]
rw |
PUPDR[14]
rw |
PUPDR[13]
rw |
PUPDR[12]
rw |
PUPDR[11]
rw |
PUPDR[10]
rw |
PUPDR[9]
rw |
PUPDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PUPDR[7]
rw |
PUPDR[6]
rw |
PUPDR[5]
rw |
PUPDR[4]
rw |
PUPDR[3]
rw |
PUPDR[2]
rw |
PUPDR[1]
rw |
PUPDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
GPIO port input data register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
IDR[15]
r |
IDR[14]
r |
IDR[13]
r |
IDR[12]
r |
IDR[11]
r |
IDR[10]
r |
IDR[9]
r |
IDR[8]
r |
IDR[7]
r |
IDR[6]
r |
IDR[5]
r |
IDR[4]
r |
IDR[3]
r |
IDR[2]
r |
IDR[1]
r |
IDR[0]
r |
Bit 0: Port input data pin 0.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 1: Port input data pin 1.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 2: Port input data pin 2.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 3: Port input data pin 3.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 4: Port input data pin 4.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 5: Port input data pin 5.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 6: Port input data pin 6.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 7: Port input data pin 7.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 8: Port input data pin 8.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 9: Port input data pin 9.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 10: Port input data pin 10.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 11: Port input data pin 11.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 12: Port input data pin 12.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 13: Port input data pin 13.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 14: Port input data pin 14.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 15: Port input data pin 15.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
GPIO port output data register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ODR[15]
rw |
ODR[14]
rw |
ODR[13]
rw |
ODR[12]
rw |
ODR[11]
rw |
ODR[10]
rw |
ODR[9]
rw |
ODR[8]
rw |
ODR[7]
rw |
ODR[6]
rw |
ODR[5]
rw |
ODR[4]
rw |
ODR[3]
rw |
ODR[2]
rw |
ODR[1]
rw |
ODR[0]
rw |
Bit 0: Port output data pin 0.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 1: Port output data pin 1.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 2: Port output data pin 2.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 3: Port output data pin 3.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 4: Port output data pin 4.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 5: Port output data pin 5.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 6: Port output data pin 6.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 7: Port output data pin 7.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 8: Port output data pin 8.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 9: Port output data pin 9.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 10: Port output data pin 10.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 11: Port output data pin 11.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 12: Port output data pin 12.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 13: Port output data pin 13.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 14: Port output data pin 14.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 15: Port output data pin 15.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
GPIO port bit set/reset register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
32/32 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BS[15]
w |
BS[14]
w |
BS[13]
w |
BS[12]
w |
BS[11]
w |
BS[10]
w |
BS[9]
w |
BS[8]
w |
BS[7]
w |
BS[6]
w |
BS[5]
w |
BS[4]
w |
BS[3]
w |
BS[2]
w |
BS[1]
w |
BS[0]
w |
Bit 0: Port x set pin 0.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 1: Port x set pin 1.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 2: Port x set pin 2.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 3: Port x set pin 3.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 4: Port x set pin 4.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 5: Port x set pin 5.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 6: Port x set pin 6.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 7: Port x set pin 7.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 8: Port x set pin 8.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 9: Port x set pin 9.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 10: Port x set pin 10.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 11: Port x set pin 11.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 12: Port x set pin 12.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 13: Port x set pin 13.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 14: Port x set pin 14.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 15: Port x set pin 15.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 16: Port x reset pin 0.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 17: Port x reset pin 1.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 18: Port x reset pin 2.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 19: Port x reset pin 3.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 20: Port x reset pin 4.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 21: Port x reset pin 5.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 22: Port x reset pin 6.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 23: Port x reset pin 7.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 24: Port x reset pin 8.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 25: Port x reset pin 9.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 26: Port x reset pin 10.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 27: Port x reset pin 11.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 28: Port x reset pin 12.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 29: Port x reset pin 13.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 30: Port x reset pin 14.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 31: Port x reset pin 15.
Allowed values:
1: Reset: Resets the corresponding ODx bit
GPIO port configuration lock register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LCKK
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
LCK[15]
rw |
LCK[14]
rw |
LCK[13]
rw |
LCK[12]
rw |
LCK[11]
rw |
LCK[10]
rw |
LCK[9]
rw |
LCK[8]
rw |
LCK[7]
rw |
LCK[6]
rw |
LCK[5]
rw |
LCK[4]
rw |
LCK[3]
rw |
LCK[2]
rw |
LCK[1]
rw |
LCK[0]
rw |
Bit 0: Port x lock pin 0.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 1: Port x lock pin 1.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 2: Port x lock pin 2.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 3: Port x lock pin 3.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 4: Port x lock pin 4.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 5: Port x lock pin 5.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 6: Port x lock pin 6.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 7: Port x lock pin 7.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 8: Port x lock pin 8.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 9: Port x lock pin 9.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 10: Port x lock pin 10.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 11: Port x lock pin 11.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 12: Port x lock pin 12.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 13: Port x lock pin 13.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 14: Port x lock pin 14.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 15: Port x lock pin 15.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 16: Port x lock bit y (y= 0..15).
Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active
GPIO alternate function low register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL7]
rw |
AFR[EL6]
rw |
AFR[EL5]
rw |
AFR[EL4]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL3]
rw |
AFR[EL2]
rw |
AFR[EL1]
rw |
AFR[EL0]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
GPIO alternate function high register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL15]
rw |
AFR[EL14]
rw |
AFR[EL13]
rw |
AFR[EL12]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL11]
rw |
AFR[EL10]
rw |
AFR[EL9]
rw |
AFR[EL8]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
port bit reset register
Offset: 0x28, size: 32, reset: 0x00000000, access: write-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
Bit 0: Port x reset pin 0.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 1: Port x reset pin 1.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 2: Port x reset pin 2.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 3: Port x reset pin 3.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 4: Port x reset pin 4.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 5: Port x reset pin 5.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 6: Port x reset pin 6.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 7: Port x reset pin 7.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 8: Port x reset pin 8.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 9: Port x reset pin 9.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 10: Port x reset pin 10.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 11: Port x reset pin 11.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 12: Port x reset pin 12.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 13: Port x reset pin 13.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 14: Port x reset pin 14.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 15: Port x reset pin 15.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
0x50001400: General-purpose I/Os
177/177 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | MODER | ||||||||||||||||||||||||||||||||
0x4 | OTYPER | ||||||||||||||||||||||||||||||||
0x8 | OSPEEDR | ||||||||||||||||||||||||||||||||
0xc | PUPDR | ||||||||||||||||||||||||||||||||
0x10 | IDR | ||||||||||||||||||||||||||||||||
0x14 | ODR | ||||||||||||||||||||||||||||||||
0x18 | BSRR | ||||||||||||||||||||||||||||||||
0x1c | LCKR | ||||||||||||||||||||||||||||||||
0x20 | AFRL | ||||||||||||||||||||||||||||||||
0x24 | AFRH | ||||||||||||||||||||||||||||||||
0x28 | BRR |
GPIO port mode register
Offset: 0x0, size: 32, reset: 0xFFFFFFFF, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MODER[15]
rw |
MODER[14]
rw |
MODER[13]
rw |
MODER[12]
rw |
MODER[11]
rw |
MODER[10]
rw |
MODER[9]
rw |
MODER[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MODER[7]
rw |
MODER[6]
rw |
MODER[5]
rw |
MODER[4]
rw |
MODER[3]
rw |
MODER[2]
rw |
MODER[1]
rw |
MODER[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Input: Input mode
1: Output: General purpose output mode
2: Alternate: Alternate function mode
3: Analog: Analog mode
GPIO port output type register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OT[15]
rw |
OT[14]
rw |
OT[13]
rw |
OT[12]
rw |
OT[11]
rw |
OT[10]
rw |
OT[9]
rw |
OT[8]
rw |
OT[7]
rw |
OT[6]
rw |
OT[5]
rw |
OT[4]
rw |
OT[3]
rw |
OT[2]
rw |
OT[1]
rw |
OT[0]
rw |
Bit 0: Port x configuration pin 0.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 1: Port x configuration pin 1.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 2: Port x configuration pin 2.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 3: Port x configuration pin 3.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 4: Port x configuration pin 4.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 5: Port x configuration pin 5.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 6: Port x configuration pin 6.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 7: Port x configuration pin 7.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 8: Port x configuration pin 8.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 9: Port x configuration pin 9.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 10: Port x configuration pin 10.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 11: Port x configuration pin 11.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 12: Port x configuration pin 12.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 13: Port x configuration pin 13.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 14: Port x configuration pin 14.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
Bit 15: Port x configuration pin 15.
Allowed values:
0: PushPull: Output push-pull (reset state)
1: OpenDrain: Output open-drain
GPIO port output speed register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OSPEEDR[15]
rw |
OSPEEDR[14]
rw |
OSPEEDR[13]
rw |
OSPEEDR[12]
rw |
OSPEEDR[11]
rw |
OSPEEDR[10]
rw |
OSPEEDR[9]
rw |
OSPEEDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OSPEEDR[7]
rw |
OSPEEDR[6]
rw |
OSPEEDR[5]
rw |
OSPEEDR[4]
rw |
OSPEEDR[3]
rw |
OSPEEDR[2]
rw |
OSPEEDR[1]
rw |
OSPEEDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: LowSpeed: Low speed
1: MediumSpeed: Medium speed
2: HighSpeed: High speed
3: VeryHighSpeed: Very high speed
GPIO port pull-up/pull-down register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PUPDR[15]
rw |
PUPDR[14]
rw |
PUPDR[13]
rw |
PUPDR[12]
rw |
PUPDR[11]
rw |
PUPDR[10]
rw |
PUPDR[9]
rw |
PUPDR[8]
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PUPDR[7]
rw |
PUPDR[6]
rw |
PUPDR[5]
rw |
PUPDR[4]
rw |
PUPDR[3]
rw |
PUPDR[2]
rw |
PUPDR[1]
rw |
PUPDR[0]
rw |
Bits 0-1: Port x configuration pin 0.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 2-3: Port x configuration pin 1.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 4-5: Port x configuration pin 2.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 6-7: Port x configuration pin 3.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 8-9: Port x configuration pin 4.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 10-11: Port x configuration pin 5.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 12-13: Port x configuration pin 6.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 14-15: Port x configuration pin 7.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 16-17: Port x configuration pin 8.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 18-19: Port x configuration pin 9.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 20-21: Port x configuration pin 10.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 22-23: Port x configuration pin 11.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 24-25: Port x configuration pin 12.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 26-27: Port x configuration pin 13.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 28-29: Port x configuration pin 14.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
Bits 30-31: Port x configuration pin 15.
Allowed values:
0: Floating: No pull-up, pull-down
1: PullUp: Pull-up
2: PullDown: Pull-down
GPIO port input data register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
IDR[15]
r |
IDR[14]
r |
IDR[13]
r |
IDR[12]
r |
IDR[11]
r |
IDR[10]
r |
IDR[9]
r |
IDR[8]
r |
IDR[7]
r |
IDR[6]
r |
IDR[5]
r |
IDR[4]
r |
IDR[3]
r |
IDR[2]
r |
IDR[1]
r |
IDR[0]
r |
Bit 0: Port input data pin 0.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 1: Port input data pin 1.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 2: Port input data pin 2.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 3: Port input data pin 3.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 4: Port input data pin 4.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 5: Port input data pin 5.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 6: Port input data pin 6.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 7: Port input data pin 7.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 8: Port input data pin 8.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 9: Port input data pin 9.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 10: Port input data pin 10.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 11: Port input data pin 11.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 12: Port input data pin 12.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 13: Port input data pin 13.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 14: Port input data pin 14.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
Bit 15: Port input data pin 15.
Allowed values:
0: Low: Input is logic low
1: High: Input is logic high
GPIO port output data register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ODR[15]
rw |
ODR[14]
rw |
ODR[13]
rw |
ODR[12]
rw |
ODR[11]
rw |
ODR[10]
rw |
ODR[9]
rw |
ODR[8]
rw |
ODR[7]
rw |
ODR[6]
rw |
ODR[5]
rw |
ODR[4]
rw |
ODR[3]
rw |
ODR[2]
rw |
ODR[1]
rw |
ODR[0]
rw |
Bit 0: Port output data pin 0.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 1: Port output data pin 1.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 2: Port output data pin 2.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 3: Port output data pin 3.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 4: Port output data pin 4.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 5: Port output data pin 5.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 6: Port output data pin 6.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 7: Port output data pin 7.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 8: Port output data pin 8.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 9: Port output data pin 9.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 10: Port output data pin 10.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 11: Port output data pin 11.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 12: Port output data pin 12.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 13: Port output data pin 13.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 14: Port output data pin 14.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
Bit 15: Port output data pin 15.
Allowed values:
0: Low: Set output to logic low
1: High: Set output to logic high
GPIO port bit set/reset register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
32/32 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BS[15]
w |
BS[14]
w |
BS[13]
w |
BS[12]
w |
BS[11]
w |
BS[10]
w |
BS[9]
w |
BS[8]
w |
BS[7]
w |
BS[6]
w |
BS[5]
w |
BS[4]
w |
BS[3]
w |
BS[2]
w |
BS[1]
w |
BS[0]
w |
Bit 0: Port x set pin 0.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 1: Port x set pin 1.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 2: Port x set pin 2.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 3: Port x set pin 3.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 4: Port x set pin 4.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 5: Port x set pin 5.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 6: Port x set pin 6.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 7: Port x set pin 7.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 8: Port x set pin 8.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 9: Port x set pin 9.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 10: Port x set pin 10.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 11: Port x set pin 11.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 12: Port x set pin 12.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 13: Port x set pin 13.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 14: Port x set pin 14.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 15: Port x set pin 15.
Allowed values:
1: Set: Sets the corresponding ODx bit
Bit 16: Port x reset pin 0.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 17: Port x reset pin 1.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 18: Port x reset pin 2.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 19: Port x reset pin 3.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 20: Port x reset pin 4.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 21: Port x reset pin 5.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 22: Port x reset pin 6.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 23: Port x reset pin 7.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 24: Port x reset pin 8.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 25: Port x reset pin 9.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 26: Port x reset pin 10.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 27: Port x reset pin 11.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 28: Port x reset pin 12.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 29: Port x reset pin 13.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 30: Port x reset pin 14.
Allowed values:
1: Reset: Resets the corresponding ODx bit
Bit 31: Port x reset pin 15.
Allowed values:
1: Reset: Resets the corresponding ODx bit
GPIO port configuration lock register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LCKK
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
LCK[15]
rw |
LCK[14]
rw |
LCK[13]
rw |
LCK[12]
rw |
LCK[11]
rw |
LCK[10]
rw |
LCK[9]
rw |
LCK[8]
rw |
LCK[7]
rw |
LCK[6]
rw |
LCK[5]
rw |
LCK[4]
rw |
LCK[3]
rw |
LCK[2]
rw |
LCK[1]
rw |
LCK[0]
rw |
Bit 0: Port x lock pin 0.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 1: Port x lock pin 1.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 2: Port x lock pin 2.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 3: Port x lock pin 3.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 4: Port x lock pin 4.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 5: Port x lock pin 5.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 6: Port x lock pin 6.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 7: Port x lock pin 7.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 8: Port x lock pin 8.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 9: Port x lock pin 9.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 10: Port x lock pin 10.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 11: Port x lock pin 11.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 12: Port x lock pin 12.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 13: Port x lock pin 13.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 14: Port x lock pin 14.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 15: Port x lock pin 15.
Allowed values:
0: Unlocked: Port configuration not locked
1: Locked: Port configuration locked
Bit 16: Port x lock bit y (y= 0..15).
Allowed values:
0: NotActive: Port configuration lock key not active
1: Active: Port configuration lock key active
GPIO alternate function low register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL7]
rw |
AFR[EL6]
rw |
AFR[EL5]
rw |
AFR[EL4]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL3]
rw |
AFR[EL2]
rw |
AFR[EL1]
rw |
AFR[EL0]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 0..7).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
GPIO alternate function high register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AFR[EL15]
rw |
AFR[EL14]
rw |
AFR[EL13]
rw |
AFR[EL12]
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
AFR[EL11]
rw |
AFR[EL10]
rw |
AFR[EL9]
rw |
AFR[EL8]
rw |
Bits 0-3: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 4-7: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 8-11: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 12-15: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 16-19: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 20-23: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 24-27: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
Bits 28-31: Alternate function selection for port x bit y (y = 8..15).
Allowed values:
0: AF0: AF0
1: AF1: AF1
2: AF2: AF2
3: AF3: AF3
4: AF4: AF4
5: AF5: AF5
6: AF6: AF6
7: AF7: AF7
port bit reset register
Offset: 0x28, size: 32, reset: 0x00000000, access: write-only
16/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BR[15]
w |
BR[14]
w |
BR[13]
w |
BR[12]
w |
BR[11]
w |
BR[10]
w |
BR[9]
w |
BR[8]
w |
BR[7]
w |
BR[6]
w |
BR[5]
w |
BR[4]
w |
BR[3]
w |
BR[2]
w |
BR[1]
w |
BR[0]
w |
Bit 0: Port x reset pin 0.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 1: Port x reset pin 1.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 2: Port x reset pin 2.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 3: Port x reset pin 3.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 4: Port x reset pin 4.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 5: Port x reset pin 5.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 6: Port x reset pin 6.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 7: Port x reset pin 7.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 8: Port x reset pin 8.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 9: Port x reset pin 9.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 10: Port x reset pin 10.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 11: Port x reset pin 11.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 12: Port x reset pin 12.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 13: Port x reset pin 13.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 14: Port x reset pin 14.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
Bit 15: Port x reset pin 15.
Allowed values:
0: NoAction: No action on the corresponding ODx bit
1: Reset: Reset the ODx bit
0x40007800: HDMI-CEC
1/40 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR | ||||||||||||||||||||||||||||||||
0x4 | CFGR | ||||||||||||||||||||||||||||||||
0x8 | TXDR | ||||||||||||||||||||||||||||||||
0xc | RXDR | ||||||||||||||||||||||||||||||||
0x10 | ISR | ||||||||||||||||||||||||||||||||
0x14 | IER |
CEC control register
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
0/3 fields covered.
Bit 0: CEC enable The CECEN bit is set and cleared by software. CECEN=1 starts message reception and enables the TXSOM control. CECEN=0 disables the CEC peripheral, clears all bits of CEC_CR register and aborts any on-going reception or transmission..
Bit 1: Tx start of message TXSOM is set by software to command transmission of the first byte of a CEC message. If the CEC message consists of only one byte, TXEOM must be set before of TXSOM. Start-bit is effectively started on the CEC line after SFT is counted. If TXSOM is set while a message reception is ongoing, transmission starts after the end of reception. TXSOM is cleared by hardware after the last byte of the message is sent with a positive acknowledge (TXEND=1), in case of transmission underrun (TXUDR=1), negative acknowledge (TXACKE=1), and transmission error (TXERR=1). It is also cleared by CECEN=0. It is not cleared and transmission is automatically retried in case of arbitration lost (ARBLST=1). TXSOM can be also used as a status bit informing application whether any transmission request is pending or under execution. The application can abort a transmission request at any time by clearing the CECEN bit. Note: TXSOM must be set when CECEN=1. TXSOM must be set when transmission data is available into TXDR. HEADER first four bits containing own peripheral address are taken from TXDR[7:4], not from CEC_CFGR.OAR that is used only for reception..
Bit 2: Tx end of message The TXEOM bit is set by software to command transmission of the last byte of a CEC message. TXEOM is cleared by hardware at the same time and under the same conditions as for TXSOM. Note: TXEOM must be set when CECEN=1. TXEOM must be set before writing transmission data to TXDR. If TXEOM is set when TXSOM=0, transmitted message consists of 1 byte (HEADER) only (PING message)..
This register is used to configure the HDMI-CEC controller. It is mandatory to write CEC_CFGR only when CECEN=0.
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/9 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LSTN
rw |
OAR
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SFTOP
rw |
BRDNOGEN
rw |
LBPEGEN
rw |
BREGEN
rw |
BRESTP
rw |
RXTOL
rw |
SFT
rw |
Bits 0-2: Signal free time SFT bits are set by software. In the SFT=0x0 configuration, the number of nominal data bit periods waited before transmission is ruled by hardware according to the transmission history. In all the other configurations the SFT number is determined by software. 0x0 2.5 data-bit periods if CEC is the last bus initiator with unsuccessful transmission (ARBLST=1, TXERR=1, TXUDR=1 or TXACKE=1) 4 data-bit periods if CEC is the new bus initiator 6 data-bit periods if CEC is the last bus initiator with successful transmission (TXEOM=1).
Bit 3: Rx-tolerance.
Bit 4: Rx-stop on bit rising error The BRESTP bit is set and cleared by software..
Bit 5: Generate error-bit on bit rising error The BREGEN bit is set and cleared by software. Note: If BRDNOGEN=0, an error-bit is generated upon BRE detection with BRESTP=1 in broadcast even if BREGEN=0..
Bit 6: Generate error-bit on long bit period error The LBPEGEN bit is set and cleared by software. Note: If BRDNOGEN=0, an error-bit is generated upon LBPE detection in broadcast even if LBPEGEN=0..
Bit 7: Avoid error-bit generation in broadcast The BRDNOGEN bit is set and cleared by software. error-bit on the CEC line. LBPE detection with LBPEGEN=0 on a broadcast message generates an error-bit on the CEC line..
Bit 8: SFT option bit The SFTOPT bit is set and cleared by software..
Bits 16-30: Own addresses configuration The OAR bits are set by software to select which destination logical addresses has to be considered in receive mode. Each bit, when set, enables the CEC logical address identified by the given bit position. At the end of HEADER reception, the received destination address is compared with the enabled addresses. In case of matching address, the incoming message is acknowledged and received. In case of non-matching address, the incoming message is received only in listen mode (LSTN=1), but without acknowledge sent. Broadcast messages are always received. Example: OAR = 0b000 0000 0010 0001 means that CEC acknowledges addresses 0x0 and 0x5. Consequently, each message directed to one of these addresses is received..
Bit 31: Listen mode LSTN bit is set and cleared by software..
CEC Tx data register
Offset: 0x8, size: 32, reset: 0x00000000, access: write-only
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXD
w |
CEC Rx Data Register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXD
r |
CEC Interrupt and Status Register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/13 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXACKE
rw |
TXERR
rw |
TXUDR
rw |
TXEND
rw |
TXBR
rw |
ARBLST
rw |
RXACKE
rw |
LBPE
rw |
SBPE
rw |
BRE
rw |
RXOVR
rw |
RXEND
rw |
RXBR
rw |
Bit 0: Rx-Byte Received The RXBR bit is set by hardware to inform application that a new byte has been received from the CEC line and stored into the RXD buffer. RXBR is cleared by software write at 1..
Bit 1: End Of Reception RXEND is set by hardware to inform application that the last byte of a CEC message is received from the CEC line and stored into the RXD buffer. RXEND is set at the same time of RXBR. RXEND is cleared by software write at 1..
Bit 2: Rx-Overrun RXOVR is set by hardware if RXBR is not yet cleared at the time a new byte is received on the CEC line and stored into RXD. RXOVR assertion stops message reception so that no acknowledge is sent. In case of broadcast, a negative acknowledge is sent. RXOVR is cleared by software write at 1..
Bit 3: Rx-Bit Rising Error BRE is set by hardware in case a Data-Bit waveform is detected with Bit Rising Error. BRE is set either at the time the misplaced rising edge occurs, or at the end of the maximum BRE tolerance allowed by RXTOL, in case rising edge is still longing. BRE stops message reception if BRESTP=1. BRE generates an Error-Bit on the CEC line if BREGEN=1. BRE is cleared by software write at 1..
Bit 4: Rx-Short Bit Period Error SBPE is set by hardware in case a Data-Bit waveform is detected with Short Bit Period Error. SBPE is set at the time the anticipated falling edge occurs. SBPE generates an Error-Bit on the CEC line. SBPE is cleared by software write at 1..
Bit 5: Rx-Long Bit Period Error LBPE is set by hardware in case a Data-Bit waveform is detected with Long Bit Period Error. LBPE is set at the end of the maximum bit-extension tolerance allowed by RXTOL, in case falling edge is still longing. LBPE always stops reception of the CEC message. LBPE generates an Error-Bit on the CEC line if LBPEGEN=1. In case of broadcast, Error-Bit is generated even in case of LBPEGEN=0. LBPE is cleared by software write at 1..
Bit 6: Rx-Missing Acknowledge In receive mode, RXACKE is set by hardware to inform application that no acknowledge was seen on the CEC line. RXACKE applies only for broadcast messages and in listen mode also for not directly addressed messages (destination address not enabled in OAR). RXACKE aborts message reception. RXACKE is cleared by software write at 1..
Bit 7: Arbitration Lost ARBLST is set by hardware to inform application that CEC device is switching to reception due to arbitration lost event following the TXSOM command. ARBLST can be due either to a contending CEC device starting earlier or starting at the same time but with higher HEADER priority. After ARBLST assertion TXSOM bit keeps pending for next transmission attempt. ARBLST is cleared by software write at 1..
Bit 8: Tx-Byte Request TXBR is set by hardware to inform application that the next transmission data has to be written to TXDR. TXBR is set when the 4th bit of currently transmitted byte is sent. Application must write the next byte to TXDR within 6 nominal data-bit periods before transmission underrun error occurs (TXUDR). TXBR is cleared by software write at 1..
Bit 9: End of Transmission TXEND is set by hardware to inform application that the last byte of the CEC message has been successfully transmitted. TXEND clears the TXSOM and TXEOM control bits. TXEND is cleared by software write at 1..
Bit 10: Tx-Buffer Underrun In transmission mode, TXUDR is set by hardware if application was not in time to load TXDR before of next byte transmission. TXUDR aborts message transmission and clears TXSOM and TXEOM control bits. TXUDR is cleared by software write at 1.
Bit 11: Tx-Error In transmission mode, TXERR is set by hardware if the CEC initiator detects low impedance on the CEC line while it is released. TXERR aborts message transmission and clears TXSOM and TXEOM controls. TXERR is cleared by software write at 1..
Bit 12: Tx-Missing Acknowledge Error In transmission mode, TXACKE is set by hardware to inform application that no acknowledge was received. In case of broadcast transmission, TXACKE informs application that a negative acknowledge was received. TXACKE aborts message transmission and clears TXSOM and TXEOM controls. TXACKE is cleared by software write at 1..
CEC interrupt enable register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/13 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXACKIE
rw |
TXERRIE
rw |
TXUDRIE
rw |
TXENDIE
rw |
TXBRIE
rw |
ARBLSTIE
rw |
RXACKIE
rw |
LBPEIE
rw |
SBPEIE
rw |
BREIE
rw |
RXOVRIE
rw |
RXENDIE
rw |
RXBRIE
rw |
Bit 0: Rx-byte received interrupt enable The RXBRIE bit is set and cleared by software..
Bit 1: End of reception interrupt enable The RXENDIE bit is set and cleared by software..
Bit 2: Rx-buffer overrun interrupt enable The RXOVRIE bit is set and cleared by software..
Bit 3: Bit rising error interrupt enable The BREIE bit is set and cleared by software..
Bit 4: Short bit period error interrupt enable The SBPEIE bit is set and cleared by software..
Bit 5: Long bit period error interrupt enable The LBPEIE bit is set and cleared by software..
Bit 6: Rx-missing acknowledge error interrupt enable The RXACKIE bit is set and cleared by software..
Bit 7: Arbitration lost interrupt enable The ARBLSTIE bit is set and cleared by software..
Bit 8: Tx-byte request interrupt enable The TXBRIE bit is set and cleared by software..
Bit 9: Tx-end of message interrupt enable The TXENDIE bit is set and cleared by software..
Bit 10: Tx-underrun interrupt enable The TXUDRIE bit is set and cleared by software..
Bit 11: Tx-error interrupt enable The TXERRIE bit is set and cleared by software..
Bit 12: Tx-missing acknowledge error interrupt enable The TXACKEIE bit is set and cleared by software..
0x40005400: Inter-integrated circuit
76/76 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | OAR1 | ||||||||||||||||||||||||||||||||
0xc | OAR2 | ||||||||||||||||||||||||||||||||
0x10 | TIMINGR | ||||||||||||||||||||||||||||||||
0x14 | TIMEOUTR | ||||||||||||||||||||||||||||||||
0x18 | ISR | ||||||||||||||||||||||||||||||||
0x1c | ICR | ||||||||||||||||||||||||||||||||
0x20 | PECR | ||||||||||||||||||||||||||||||||
0x24 | RXDR | ||||||||||||||||||||||||||||||||
0x28 | TXDR |
Control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PECEN
rw |
ALERTEN
rw |
SMBDEN
rw |
SMBHEN
rw |
GCEN
rw |
WUPEN
rw |
NOSTRETCH
rw |
SBC
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RXDMAEN
rw |
TXDMAEN
rw |
ANFOFF
rw |
DNF
rw |
ERRIE
rw |
TCIE
rw |
STOPIE
rw |
NACKIE
rw |
ADDRIE
rw |
RXIE
rw |
TXIE
rw |
PE
rw |
Bit 0: Peripheral enable Note: When PE=0, the I2C SCL and SDA lines are released. Internal state machines and status bits are put back to their reset value. When cleared, PE must be kept low for at least 3 APB clock cycles..
Allowed values:
0: Disabled: Peripheral disabled
1: Enabled: Peripheral enabled
Bit 1: TX Interrupt enable.
Allowed values:
0: Disabled: Transmit (TXIS) interrupt disabled
1: Enabled: Transmit (TXIS) interrupt enabled
Bit 2: RX Interrupt enable.
Allowed values:
0: Disabled: Receive (RXNE) interrupt disabled
1: Enabled: Receive (RXNE) interrupt enabled
Bit 3: Address match Interrupt enable (slave only).
Allowed values:
0: Disabled: Address match (ADDR) interrupts disabled
1: Enabled: Address match (ADDR) interrupts enabled
Bit 4: Not acknowledge received Interrupt enable.
Allowed values:
0: Disabled: Not acknowledge (NACKF) received interrupts disabled
1: Enabled: Not acknowledge (NACKF) received interrupts enabled
Bit 5: Stop detection Interrupt enable.
Allowed values:
0: Disabled: Stop detection (STOPF) interrupt disabled
1: Enabled: Stop detection (STOPF) interrupt enabled
Bit 6: Transfer Complete interrupt enable Note: Any of these events generate an interrupt: Transfer Complete (TC) Transfer Complete Reload (TCR).
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 7: Error interrupts enable Note: Any of these errors generate an interrupt: Arbitration Loss (ARLO) Bus Error detection (BERR) Overrun/Underrun (OVR) Timeout detection (TIMEOUT) PEC error detection (PECERR) Alert pin event detection (ALERT).
Allowed values:
0: Disabled: Error detection interrupts disabled
1: Enabled: Error detection interrupts enabled
Bits 8-11: Digital noise filter These bits are used to configure the digital noise filter on SDA and SCL input. The digital filter, filters spikes with a length of up to DNF[3:0] * tI2CCLK ... Note: If the analog filter is also enabled, the digital filter is added to the analog filter. This filter can only be programmed when the I2C is disabled (PE = 0)..
Allowed values:
0: NoFilter: Digital filter disabled
1: Filter1: Digital filter enabled and filtering capability up to 1 tI2CCLK
2: Filter2: Digital filter enabled and filtering capability up to 2 tI2CCLK
3: Filter3: Digital filter enabled and filtering capability up to 3 tI2CCLK
4: Filter4: Digital filter enabled and filtering capability up to 4 tI2CCLK
5: Filter5: Digital filter enabled and filtering capability up to 5 tI2CCLK
6: Filter6: Digital filter enabled and filtering capability up to 6 tI2CCLK
7: Filter7: Digital filter enabled and filtering capability up to 7 tI2CCLK
8: Filter8: Digital filter enabled and filtering capability up to 8 tI2CCLK
9: Filter9: Digital filter enabled and filtering capability up to 9 tI2CCLK
10: Filter10: Digital filter enabled and filtering capability up to 10 tI2CCLK
11: Filter11: Digital filter enabled and filtering capability up to 11 tI2CCLK
12: Filter12: Digital filter enabled and filtering capability up to 12 tI2CCLK
13: Filter13: Digital filter enabled and filtering capability up to 13 tI2CCLK
14: Filter14: Digital filter enabled and filtering capability up to 14 tI2CCLK
15: Filter15: Digital filter enabled and filtering capability up to 15 tI2CCLK
Bit 12: Analog noise filter OFF Note: This bit can only be programmed when the I2C is disabled (PE = 0)..
Allowed values:
0: Enabled: Analog noise filter enabled
1: Disabled: Analog noise filter disabled
Bit 14: DMA transmission requests enable.
Allowed values:
0: Disabled: DMA mode disabled for transmission
1: Enabled: DMA mode enabled for transmission
Bit 15: DMA reception requests enable.
Allowed values:
0: Disabled: DMA mode disabled for reception
1: Enabled: DMA mode enabled for reception
Bit 16: Slave byte control This bit is used to enable hardware byte control in slave mode..
Allowed values:
0: Disabled: Slave byte control disabled
1: Enabled: Slave byte control enabled
Bit 17: Clock stretching disable This bit is used to disable clock stretching in slave mode. It must be kept cleared in master mode. Note: This bit can only be programmed when the I2C is disabled (PE = 0)..
Allowed values:
0: Enabled: Clock stretching enabled
1: Disabled: Clock stretching disabled
Bit 18: Wakeup from Stop mode enable Note: If the Wakeup from Stop mode feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to . Note: WUPEN can be set only when DNF = '0000'.
Allowed values:
0: Disabled: Wakeup from Stop mode disabled
1: Enabled: Wakeup from Stop mode enabled
Bit 19: General call enable.
Allowed values:
0: Disabled: General call disabled. Address 0b00000000 is NACKed
1: Enabled: General call enabled. Address 0b00000000 is ACKed
Bit 20: SMBus Host Address enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: Host address disabled. Address 0b0001000x is NACKed
1: Enabled: Host address enabled. Address 0b0001000x is ACKed
Bit 21: SMBus Device Default Address enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: Device default address disabled. Address 0b1100001x is NACKed
1: Enabled: Device default address enabled. Address 0b1100001x is ACKed
Bit 22: SMBus alert enable Note: When ALERTEN=0, the SMBA pin can be used as a standard GPIO. If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: In device mode (SMBHEN=Disabled) Releases SMBA pin high and Alert Response Address Header disabled (0001100x) followed by NACK. In host mode (SMBHEN=Enabled) SMBus Alert pin (SMBA) not supported
1: Enabled: In device mode (SMBHEN=Disabled) Drives SMBA pin low and Alert Response Address Header enabled (0001100x) followed by ACK.In host mode (SMBHEN=Enabled) SMBus Alert pin (SMBA) supported
Bit 23: PEC enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: PEC calculation disabled
1: Enabled: PEC calculation enabled
Control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
11/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PECBYTE
rw |
AUTOEND
rw |
RELOAD
rw |
NBYTES
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
NACK
rw |
STOP
rw |
START
rw |
HEAD10R
rw |
ADD10
rw |
RD_WRN
rw |
SADD
rw |
Bits 0-9: Slave address (master mode) In 7-bit addressing mode (ADD10 = 0): SADD[7:1] should be written with the 7-bit slave address to be sent. The bits SADD[9], SADD[8] and SADD[0] are don't care. In 10-bit addressing mode (ADD10 = 1): SADD[9:0] should be written with the 10-bit slave address to be sent. Note: Changing these bits when the START bit is set is not allowed..
Allowed values: 0x0-0x3ff
Bit 10: Transfer direction (master mode) Note: Changing this bit when the START bit is set is not allowed..
Allowed values:
0: Write: Master requests a write transfer
1: Read: Master requests a read transfer
Bit 11: 10-bit addressing mode (master mode) Note: Changing this bit when the START bit is set is not allowed..
Allowed values:
0: Bit7: The master operates in 7-bit addressing mode
1: Bit10: The master operates in 10-bit addressing mode
Bit 12: 10-bit address header only read direction (master receiver mode) Note: Changing this bit when the START bit is set is not allowed..
Allowed values:
0: Complete: The master sends the complete 10 bit slave address read sequence
1: Partial: The master only sends the 1st 7 bits of the 10 bit address, followed by Read direction
Bit 13: Start generation This bit is set by software, and cleared by hardware after the Start followed by the address sequence is sent, by an arbitration loss, by a timeout error detection, or when PE = 0. It can also be cleared by software by writing '1' to the ADDRCF bit in the I2C_ICR register. If the I2C is already in master mode with AUTOEND = 0, setting this bit generates a Repeated Start condition when RELOAD=0, after the end of the NBYTES transfer. Otherwise setting this bit generates a START condition once the bus is free. Note: Writing '0' to this bit has no effect. The START bit can be set even if the bus is BUSY or I2C is in slave mode. This bit has no effect when RELOAD is set..
Allowed values:
0: NoStart: No Start generation
1: Start: Restart/Start generation
Bit 14: Stop generation (master mode) The bit is set by software, cleared by hardware when a STOP condition is detected, or when PE = 0. In Master Mode: Note: Writing '0' to this bit has no effect..
Allowed values:
0: NoStop: No Stop generation
1: Stop: Stop generation after current byte transfer
Bit 15: NACK generation (slave mode) The bit is set by software, cleared by hardware when the NACK is sent, or when a STOP condition or an Address matched is received, or when PE=0. Note: Writing '0' to this bit has no effect. This bit is used in slave mode only: in master receiver mode, NACK is automatically generated after last byte preceding STOP or RESTART condition, whatever the NACK bit value. When an overrun occurs in slave receiver NOSTRETCH mode, a NACK is automatically generated whatever the NACK bit value. When hardware PEC checking is enabled (PECBYTE=1), the PEC acknowledge value does not depend on the NACK value..
Allowed values:
0: Ack: an ACK is sent after current received byte
1: Nack: a NACK is sent after current received byte
Bits 16-23: Number of bytes The number of bytes to be transmitted/received is programmed there. This field is don't care in slave mode with SBC=0. Note: Changing these bits when the START bit is set is not allowed..
Allowed values: 0x0-0xff
Bit 24: NBYTES reload mode This bit is set and cleared by software..
Allowed values:
0: Completed: The transfer is completed after the NBYTES data transfer (STOP or RESTART will follow)
1: NotCompleted: The transfer is not completed after the NBYTES data transfer (NBYTES will be reloaded)
Bit 25: Automatic end mode (master mode) This bit is set and cleared by software. Note: This bit has no effect in slave mode or when the RELOAD bit is set..
Allowed values:
0: Software: Software end mode: TC flag is set when NBYTES data are transferred, stretching SCL low
1: Automatic: Automatic end mode: a STOP condition is automatically sent when NBYTES data are transferred
Bit 26: Packet error checking byte This bit is set by software, and cleared by hardware when the PEC is transferred, or when a STOP condition or an Address matched is received, also when PE=0. Note: Writing '0' to this bit has no effect. This bit has no effect when RELOAD is set. This bit has no effect is slave mode when SBC=0. If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: NoPec: No PEC transfer
1: Pec: PEC transmission/reception is requested
Own address register 1
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
3/3 fields covered.
Bits 0-9: Interface own slave address 7-bit addressing mode: OA1[7:1] contains the 7-bit own slave address. The bits OA1[9], OA1[8] and OA1[0] are don't care. 10-bit addressing mode: OA1[9:0] contains the 10-bit own slave address. Note: These bits can be written only when OA1EN=0..
Allowed values: 0x0-0x3ff
Bit 10: Own Address 1 10-bit mode Note: This bit can be written only when OA1EN=0..
Allowed values:
0: Bit7: Own address 1 is a 7-bit address
1: Bit10: Own address 1 is a 10-bit address
Bit 15: Own Address 1 enable.
Allowed values:
0: Disabled: Own address 1 disabled. The received slave address OA1 is NACKed
1: Enabled: Own address 1 enabled. The received slave address OA1 is ACKed
Own address register 2
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
3/3 fields covered.
Bits 1-7: Interface address 7-bit addressing mode: 7-bit address Note: These bits can be written only when OA2EN=0..
Allowed values: 0x0-0x7f
Bits 8-10: Own Address 2 masks Note: These bits can be written only when OA2EN=0. As soon as OA2MSK is not equal to 0, the reserved I2C addresses (0b0000xxx and 0b1111xxx) are not acknowledged even if the comparison matches..
Allowed values:
0: NoMask: No mask
1: Mask1: OA2[1] is masked and don’t care. Only OA2[7:2] are compared
2: Mask2: OA2[2:1] are masked and don’t care. Only OA2[7:3] are compared
3: Mask3: OA2[3:1] are masked and don’t care. Only OA2[7:4] are compared
4: Mask4: OA2[4:1] are masked and don’t care. Only OA2[7:5] are compared
5: Mask5: OA2[5:1] are masked and don’t care. Only OA2[7:6] are compared
6: Mask6: OA2[6:1] are masked and don’t care. Only OA2[7] is compared.
7: Mask7: OA2[7:1] are masked and don’t care. No comparison is done, and all (except reserved) 7-bit received addresses are acknowledged
Bit 15: Own Address 2 enable.
Allowed values:
0: Disabled: Own address 2 disabled. The received slave address OA2 is NACKed
1: Enabled: Own address 2 enabled. The received slave address OA2 is ACKed
Timing register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESC
rw |
SCLDEL
rw |
SDADEL
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SCLH
rw |
SCLL
rw |
Bits 0-7: SCL low period (master mode).
Allowed values: 0x0-0xff
Bits 8-15: SCL high period (master mode).
Allowed values: 0x0-0xff
Bits 16-19: Data hold time.
Allowed values: 0x0-0xf
Bits 20-23: Data setup time.
Allowed values: 0x0-0xf
Bits 28-31: Timing prescaler.
Allowed values: 0x0-0xf
Status register 1
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TEXTEN
rw |
TIMEOUTB
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TIMOUTEN
rw |
TIDLE
rw |
TIMEOUTA
rw |
Bits 0-11: Bus Timeout A This field is used to configure: The SCL low timeout condition tTIMEOUT when TIDLE=0 tTIMEOUT= (TIMEOUTA+1) x 2048 x tI2CCLK The bus idle condition (both SCL and SDA high) when TIDLE=1 tIDLE= (TIMEOUTA+1) x 4 x tI2CCLK Note: These bits can be written only when TIMOUTEN=0..
Allowed values: 0x0-0xfff
Bit 12: Idle clock timeout detection Note: This bit can be written only when TIMOUTEN=0..
Allowed values:
0: Disabled: TIMEOUTA is used to detect SCL low timeout
1: Enabled: TIMEOUTA is used to detect both SCL and SDA high timeout (bus idle condition)
Bit 15: Clock timeout enable.
Allowed values:
0: Disabled: SCL timeout detection is disabled
1: Enabled: SCL timeout detection is enabled
Bits 16-27: Bus timeout B This field is used to configure the cumulative clock extension timeout: In master mode, the master cumulative clock low extend time (tLOW:MEXT) is detected In slave mode, the slave cumulative clock low extend time (tLOW:SEXT) is detected tLOW:EXT= (TIMEOUTB+1) x 2048 x tI2CCLK Note: These bits can be written only when TEXTEN=0..
Allowed values: 0x0-0xfff
Bit 31: Extended clock timeout enable.
Allowed values:
0: Disabled: Extended clock timeout detection is disabled
1: Enabled: Extended clock timeout detection is enabled
Interrupt and Status register
Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADDCODE
r |
DIR
r |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BUSY
r |
ALERT
r |
TIMEOUT
r |
PECERR
r |
OVR
r |
ARLO
r |
BERR
r |
TCR
r |
TC
r |
STOPF
r |
NACKF
r |
ADDR
r |
RXNE
r |
TXIS
rw |
TXE
rw |
Bit 0: Transmit data register empty (transmitters).
Allowed values:
0: NotEmpty: TXDR register not empty
1: Empty: TXDR register empty
Bit 1: Transmit interrupt status (transmitters).
Allowed values:
0: NotEmpty: The TXDR register is not empty
1: Empty: The TXDR register is empty and the data to be transmitted must be written in the TXDR register
Bit 2: Receive data register not empty (receivers).
Allowed values:
0: Empty: The RXDR register is empty
1: NotEmpty: Received data is copied into the RXDR register, and is ready to be read
Bit 3: Address matched (slave mode).
Allowed values:
0: NotMatch: Adress mismatched or not received
1: Match: Received slave address matched with one of the enabled slave addresses
Bit 4: Not acknowledge received flag.
Allowed values:
0: NoNack: No NACK has been received
1: Nack: NACK has been received
Bit 5: Stop detection flag.
Allowed values:
0: NoStop: No Stop condition detected
1: Stop: Stop condition detected
Bit 6: Transfer Complete (master mode).
Allowed values:
0: NotComplete: Transfer is not complete
1: Complete: NBYTES has been transfered
Bit 7: Transfer Complete Reload.
Allowed values:
0: NotComplete: Transfer is not complete
1: Complete: NBYTES has been transfered
Bit 8: Bus error.
Allowed values:
0: NoError: No bus error
1: Error: Misplaced Start and Stop condition is detected
Bit 9: Arbitration lost.
Allowed values:
0: NotLost: No arbitration lost
1: Lost: Arbitration lost
Bit 10: Overrun/Underrun (slave mode).
Allowed values:
0: NoOverrun: No overrun/underrun error occurs
1: Overrun: slave mode with NOSTRETCH=1, when an overrun/underrun error occurs
Bit 11: PEC Error in reception.
Allowed values:
0: Match: Received PEC does match with PEC register
1: NoMatch: Received PEC does not match with PEC register
Bit 12: Timeout or t_low detection flag.
Allowed values:
0: NoTimeout: No timeout occured
1: Timeout: Timeout occured
Bit 13: SMBus alert.
Allowed values:
0: NoAlert: SMBA alert is not detected
1: Alert: SMBA alert event is detected on SMBA pin
Bit 15: Bus busy.
Allowed values:
0: NotBusy: No communication is in progress on the bus
1: Busy: A communication is in progress on the bus
Bit 16: Transfer direction (Slave mode) This flag is updated when an address match event occurs (ADDR=1)..
Allowed values:
0: Write: Write transfer, slave enters receiver mode
1: Read: Read transfer, slave enters transmitter mode
Bits 17-23: Address match code (Slave mode).
Allowed values: 0x0-0x7f
Interrupt clear register
Offset: 0x1c, size: 32, reset: 0x00000000, access: write-only
9/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ALERTCF
w |
TIMOUTCF
w |
PECCF
w |
OVRCF
w |
ARLOCF
w |
BERRCF
w |
STOPCF
w |
NACKCF
w |
ADDRCF
w |
Bit 3: Address Matched flag clear.
Allowed values:
1: Clear: Clears the ADDR flag in ISR register
Bit 4: Not Acknowledge flag clear.
Allowed values:
1: Clear: Clears the NACK flag in ISR register
Bit 5: Stop detection flag clear.
Allowed values:
1: Clear: Clears the STOP flag in ISR register
Bit 8: Bus error flag clear.
Allowed values:
1: Clear: Clears the BERR flag in ISR register
Bit 9: Arbitration lost flag clear.
Allowed values:
1: Clear: Clears the ARLO flag in ISR register
Bit 10: Overrun/Underrun flag clear.
Allowed values:
1: Clear: Clears the OVR flag in ISR register
Bit 11: PEC Error flag clear.
Allowed values:
1: Clear: Clears the PEC flag in ISR register
Bit 12: Timeout detection flag clear.
Allowed values:
1: Clear: Clears the TIMOUT flag in ISR register
Bit 13: Alert flag clear.
Allowed values:
1: Clear: Clears the ALERT flag in ISR register
PEC register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PEC
r |
Receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXDATA
r |
Transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXDATA
rw |
0x40005800: Inter-integrated circuit
76/76 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | OAR1 | ||||||||||||||||||||||||||||||||
0xc | OAR2 | ||||||||||||||||||||||||||||||||
0x10 | TIMINGR | ||||||||||||||||||||||||||||||||
0x14 | TIMEOUTR | ||||||||||||||||||||||||||||||||
0x18 | ISR | ||||||||||||||||||||||||||||||||
0x1c | ICR | ||||||||||||||||||||||||||||||||
0x20 | PECR | ||||||||||||||||||||||||||||||||
0x24 | RXDR | ||||||||||||||||||||||||||||||||
0x28 | TXDR |
Control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PECEN
rw |
ALERTEN
rw |
SMBDEN
rw |
SMBHEN
rw |
GCEN
rw |
WUPEN
rw |
NOSTRETCH
rw |
SBC
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RXDMAEN
rw |
TXDMAEN
rw |
ANFOFF
rw |
DNF
rw |
ERRIE
rw |
TCIE
rw |
STOPIE
rw |
NACKIE
rw |
ADDRIE
rw |
RXIE
rw |
TXIE
rw |
PE
rw |
Bit 0: Peripheral enable Note: When PE=0, the I2C SCL and SDA lines are released. Internal state machines and status bits are put back to their reset value. When cleared, PE must be kept low for at least 3 APB clock cycles..
Allowed values:
0: Disabled: Peripheral disabled
1: Enabled: Peripheral enabled
Bit 1: TX Interrupt enable.
Allowed values:
0: Disabled: Transmit (TXIS) interrupt disabled
1: Enabled: Transmit (TXIS) interrupt enabled
Bit 2: RX Interrupt enable.
Allowed values:
0: Disabled: Receive (RXNE) interrupt disabled
1: Enabled: Receive (RXNE) interrupt enabled
Bit 3: Address match Interrupt enable (slave only).
Allowed values:
0: Disabled: Address match (ADDR) interrupts disabled
1: Enabled: Address match (ADDR) interrupts enabled
Bit 4: Not acknowledge received Interrupt enable.
Allowed values:
0: Disabled: Not acknowledge (NACKF) received interrupts disabled
1: Enabled: Not acknowledge (NACKF) received interrupts enabled
Bit 5: Stop detection Interrupt enable.
Allowed values:
0: Disabled: Stop detection (STOPF) interrupt disabled
1: Enabled: Stop detection (STOPF) interrupt enabled
Bit 6: Transfer Complete interrupt enable Note: Any of these events generate an interrupt: Transfer Complete (TC) Transfer Complete Reload (TCR).
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 7: Error interrupts enable Note: Any of these errors generate an interrupt: Arbitration Loss (ARLO) Bus Error detection (BERR) Overrun/Underrun (OVR) Timeout detection (TIMEOUT) PEC error detection (PECERR) Alert pin event detection (ALERT).
Allowed values:
0: Disabled: Error detection interrupts disabled
1: Enabled: Error detection interrupts enabled
Bits 8-11: Digital noise filter These bits are used to configure the digital noise filter on SDA and SCL input. The digital filter, filters spikes with a length of up to DNF[3:0] * tI2CCLK ... Note: If the analog filter is also enabled, the digital filter is added to the analog filter. This filter can only be programmed when the I2C is disabled (PE = 0)..
Allowed values:
0: NoFilter: Digital filter disabled
1: Filter1: Digital filter enabled and filtering capability up to 1 tI2CCLK
2: Filter2: Digital filter enabled and filtering capability up to 2 tI2CCLK
3: Filter3: Digital filter enabled and filtering capability up to 3 tI2CCLK
4: Filter4: Digital filter enabled and filtering capability up to 4 tI2CCLK
5: Filter5: Digital filter enabled and filtering capability up to 5 tI2CCLK
6: Filter6: Digital filter enabled and filtering capability up to 6 tI2CCLK
7: Filter7: Digital filter enabled and filtering capability up to 7 tI2CCLK
8: Filter8: Digital filter enabled and filtering capability up to 8 tI2CCLK
9: Filter9: Digital filter enabled and filtering capability up to 9 tI2CCLK
10: Filter10: Digital filter enabled and filtering capability up to 10 tI2CCLK
11: Filter11: Digital filter enabled and filtering capability up to 11 tI2CCLK
12: Filter12: Digital filter enabled and filtering capability up to 12 tI2CCLK
13: Filter13: Digital filter enabled and filtering capability up to 13 tI2CCLK
14: Filter14: Digital filter enabled and filtering capability up to 14 tI2CCLK
15: Filter15: Digital filter enabled and filtering capability up to 15 tI2CCLK
Bit 12: Analog noise filter OFF Note: This bit can only be programmed when the I2C is disabled (PE = 0)..
Allowed values:
0: Enabled: Analog noise filter enabled
1: Disabled: Analog noise filter disabled
Bit 14: DMA transmission requests enable.
Allowed values:
0: Disabled: DMA mode disabled for transmission
1: Enabled: DMA mode enabled for transmission
Bit 15: DMA reception requests enable.
Allowed values:
0: Disabled: DMA mode disabled for reception
1: Enabled: DMA mode enabled for reception
Bit 16: Slave byte control This bit is used to enable hardware byte control in slave mode..
Allowed values:
0: Disabled: Slave byte control disabled
1: Enabled: Slave byte control enabled
Bit 17: Clock stretching disable This bit is used to disable clock stretching in slave mode. It must be kept cleared in master mode. Note: This bit can only be programmed when the I2C is disabled (PE = 0)..
Allowed values:
0: Enabled: Clock stretching enabled
1: Disabled: Clock stretching disabled
Bit 18: Wakeup from Stop mode enable Note: If the Wakeup from Stop mode feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to . Note: WUPEN can be set only when DNF = '0000'.
Allowed values:
0: Disabled: Wakeup from Stop mode disabled
1: Enabled: Wakeup from Stop mode enabled
Bit 19: General call enable.
Allowed values:
0: Disabled: General call disabled. Address 0b00000000 is NACKed
1: Enabled: General call enabled. Address 0b00000000 is ACKed
Bit 20: SMBus Host Address enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: Host address disabled. Address 0b0001000x is NACKed
1: Enabled: Host address enabled. Address 0b0001000x is ACKed
Bit 21: SMBus Device Default Address enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: Device default address disabled. Address 0b1100001x is NACKed
1: Enabled: Device default address enabled. Address 0b1100001x is ACKed
Bit 22: SMBus alert enable Note: When ALERTEN=0, the SMBA pin can be used as a standard GPIO. If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: In device mode (SMBHEN=Disabled) Releases SMBA pin high and Alert Response Address Header disabled (0001100x) followed by NACK. In host mode (SMBHEN=Enabled) SMBus Alert pin (SMBA) not supported
1: Enabled: In device mode (SMBHEN=Disabled) Drives SMBA pin low and Alert Response Address Header enabled (0001100x) followed by ACK.In host mode (SMBHEN=Enabled) SMBus Alert pin (SMBA) supported
Bit 23: PEC enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: PEC calculation disabled
1: Enabled: PEC calculation enabled
Control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
11/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PECBYTE
rw |
AUTOEND
rw |
RELOAD
rw |
NBYTES
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
NACK
rw |
STOP
rw |
START
rw |
HEAD10R
rw |
ADD10
rw |
RD_WRN
rw |
SADD
rw |
Bits 0-9: Slave address (master mode) In 7-bit addressing mode (ADD10 = 0): SADD[7:1] should be written with the 7-bit slave address to be sent. The bits SADD[9], SADD[8] and SADD[0] are don't care. In 10-bit addressing mode (ADD10 = 1): SADD[9:0] should be written with the 10-bit slave address to be sent. Note: Changing these bits when the START bit is set is not allowed..
Allowed values: 0x0-0x3ff
Bit 10: Transfer direction (master mode) Note: Changing this bit when the START bit is set is not allowed..
Allowed values:
0: Write: Master requests a write transfer
1: Read: Master requests a read transfer
Bit 11: 10-bit addressing mode (master mode) Note: Changing this bit when the START bit is set is not allowed..
Allowed values:
0: Bit7: The master operates in 7-bit addressing mode
1: Bit10: The master operates in 10-bit addressing mode
Bit 12: 10-bit address header only read direction (master receiver mode) Note: Changing this bit when the START bit is set is not allowed..
Allowed values:
0: Complete: The master sends the complete 10 bit slave address read sequence
1: Partial: The master only sends the 1st 7 bits of the 10 bit address, followed by Read direction
Bit 13: Start generation This bit is set by software, and cleared by hardware after the Start followed by the address sequence is sent, by an arbitration loss, by a timeout error detection, or when PE = 0. It can also be cleared by software by writing '1' to the ADDRCF bit in the I2C_ICR register. If the I2C is already in master mode with AUTOEND = 0, setting this bit generates a Repeated Start condition when RELOAD=0, after the end of the NBYTES transfer. Otherwise setting this bit generates a START condition once the bus is free. Note: Writing '0' to this bit has no effect. The START bit can be set even if the bus is BUSY or I2C is in slave mode. This bit has no effect when RELOAD is set..
Allowed values:
0: NoStart: No Start generation
1: Start: Restart/Start generation
Bit 14: Stop generation (master mode) The bit is set by software, cleared by hardware when a STOP condition is detected, or when PE = 0. In Master Mode: Note: Writing '0' to this bit has no effect..
Allowed values:
0: NoStop: No Stop generation
1: Stop: Stop generation after current byte transfer
Bit 15: NACK generation (slave mode) The bit is set by software, cleared by hardware when the NACK is sent, or when a STOP condition or an Address matched is received, or when PE=0. Note: Writing '0' to this bit has no effect. This bit is used in slave mode only: in master receiver mode, NACK is automatically generated after last byte preceding STOP or RESTART condition, whatever the NACK bit value. When an overrun occurs in slave receiver NOSTRETCH mode, a NACK is automatically generated whatever the NACK bit value. When hardware PEC checking is enabled (PECBYTE=1), the PEC acknowledge value does not depend on the NACK value..
Allowed values:
0: Ack: an ACK is sent after current received byte
1: Nack: a NACK is sent after current received byte
Bits 16-23: Number of bytes The number of bytes to be transmitted/received is programmed there. This field is don't care in slave mode with SBC=0. Note: Changing these bits when the START bit is set is not allowed..
Allowed values: 0x0-0xff
Bit 24: NBYTES reload mode This bit is set and cleared by software..
Allowed values:
0: Completed: The transfer is completed after the NBYTES data transfer (STOP or RESTART will follow)
1: NotCompleted: The transfer is not completed after the NBYTES data transfer (NBYTES will be reloaded)
Bit 25: Automatic end mode (master mode) This bit is set and cleared by software. Note: This bit has no effect in slave mode or when the RELOAD bit is set..
Allowed values:
0: Software: Software end mode: TC flag is set when NBYTES data are transferred, stretching SCL low
1: Automatic: Automatic end mode: a STOP condition is automatically sent when NBYTES data are transferred
Bit 26: Packet error checking byte This bit is set by software, and cleared by hardware when the PEC is transferred, or when a STOP condition or an Address matched is received, also when PE=0. Note: Writing '0' to this bit has no effect. This bit has no effect when RELOAD is set. This bit has no effect is slave mode when SBC=0. If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: NoPec: No PEC transfer
1: Pec: PEC transmission/reception is requested
Own address register 1
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
3/3 fields covered.
Bits 0-9: Interface own slave address 7-bit addressing mode: OA1[7:1] contains the 7-bit own slave address. The bits OA1[9], OA1[8] and OA1[0] are don't care. 10-bit addressing mode: OA1[9:0] contains the 10-bit own slave address. Note: These bits can be written only when OA1EN=0..
Allowed values: 0x0-0x3ff
Bit 10: Own Address 1 10-bit mode Note: This bit can be written only when OA1EN=0..
Allowed values:
0: Bit7: Own address 1 is a 7-bit address
1: Bit10: Own address 1 is a 10-bit address
Bit 15: Own Address 1 enable.
Allowed values:
0: Disabled: Own address 1 disabled. The received slave address OA1 is NACKed
1: Enabled: Own address 1 enabled. The received slave address OA1 is ACKed
Own address register 2
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
3/3 fields covered.
Bits 1-7: Interface address 7-bit addressing mode: 7-bit address Note: These bits can be written only when OA2EN=0..
Allowed values: 0x0-0x7f
Bits 8-10: Own Address 2 masks Note: These bits can be written only when OA2EN=0. As soon as OA2MSK is not equal to 0, the reserved I2C addresses (0b0000xxx and 0b1111xxx) are not acknowledged even if the comparison matches..
Allowed values:
0: NoMask: No mask
1: Mask1: OA2[1] is masked and don’t care. Only OA2[7:2] are compared
2: Mask2: OA2[2:1] are masked and don’t care. Only OA2[7:3] are compared
3: Mask3: OA2[3:1] are masked and don’t care. Only OA2[7:4] are compared
4: Mask4: OA2[4:1] are masked and don’t care. Only OA2[7:5] are compared
5: Mask5: OA2[5:1] are masked and don’t care. Only OA2[7:6] are compared
6: Mask6: OA2[6:1] are masked and don’t care. Only OA2[7] is compared.
7: Mask7: OA2[7:1] are masked and don’t care. No comparison is done, and all (except reserved) 7-bit received addresses are acknowledged
Bit 15: Own Address 2 enable.
Allowed values:
0: Disabled: Own address 2 disabled. The received slave address OA2 is NACKed
1: Enabled: Own address 2 enabled. The received slave address OA2 is ACKed
Timing register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESC
rw |
SCLDEL
rw |
SDADEL
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SCLH
rw |
SCLL
rw |
Bits 0-7: SCL low period (master mode).
Allowed values: 0x0-0xff
Bits 8-15: SCL high period (master mode).
Allowed values: 0x0-0xff
Bits 16-19: Data hold time.
Allowed values: 0x0-0xf
Bits 20-23: Data setup time.
Allowed values: 0x0-0xf
Bits 28-31: Timing prescaler.
Allowed values: 0x0-0xf
Status register 1
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TEXTEN
rw |
TIMEOUTB
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TIMOUTEN
rw |
TIDLE
rw |
TIMEOUTA
rw |
Bits 0-11: Bus Timeout A This field is used to configure: The SCL low timeout condition tTIMEOUT when TIDLE=0 tTIMEOUT= (TIMEOUTA+1) x 2048 x tI2CCLK The bus idle condition (both SCL and SDA high) when TIDLE=1 tIDLE= (TIMEOUTA+1) x 4 x tI2CCLK Note: These bits can be written only when TIMOUTEN=0..
Allowed values: 0x0-0xfff
Bit 12: Idle clock timeout detection Note: This bit can be written only when TIMOUTEN=0..
Allowed values:
0: Disabled: TIMEOUTA is used to detect SCL low timeout
1: Enabled: TIMEOUTA is used to detect both SCL and SDA high timeout (bus idle condition)
Bit 15: Clock timeout enable.
Allowed values:
0: Disabled: SCL timeout detection is disabled
1: Enabled: SCL timeout detection is enabled
Bits 16-27: Bus timeout B This field is used to configure the cumulative clock extension timeout: In master mode, the master cumulative clock low extend time (tLOW:MEXT) is detected In slave mode, the slave cumulative clock low extend time (tLOW:SEXT) is detected tLOW:EXT= (TIMEOUTB+1) x 2048 x tI2CCLK Note: These bits can be written only when TEXTEN=0..
Allowed values: 0x0-0xfff
Bit 31: Extended clock timeout enable.
Allowed values:
0: Disabled: Extended clock timeout detection is disabled
1: Enabled: Extended clock timeout detection is enabled
Interrupt and Status register
Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADDCODE
r |
DIR
r |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BUSY
r |
ALERT
r |
TIMEOUT
r |
PECERR
r |
OVR
r |
ARLO
r |
BERR
r |
TCR
r |
TC
r |
STOPF
r |
NACKF
r |
ADDR
r |
RXNE
r |
TXIS
rw |
TXE
rw |
Bit 0: Transmit data register empty (transmitters).
Allowed values:
0: NotEmpty: TXDR register not empty
1: Empty: TXDR register empty
Bit 1: Transmit interrupt status (transmitters).
Allowed values:
0: NotEmpty: The TXDR register is not empty
1: Empty: The TXDR register is empty and the data to be transmitted must be written in the TXDR register
Bit 2: Receive data register not empty (receivers).
Allowed values:
0: Empty: The RXDR register is empty
1: NotEmpty: Received data is copied into the RXDR register, and is ready to be read
Bit 3: Address matched (slave mode).
Allowed values:
0: NotMatch: Adress mismatched or not received
1: Match: Received slave address matched with one of the enabled slave addresses
Bit 4: Not acknowledge received flag.
Allowed values:
0: NoNack: No NACK has been received
1: Nack: NACK has been received
Bit 5: Stop detection flag.
Allowed values:
0: NoStop: No Stop condition detected
1: Stop: Stop condition detected
Bit 6: Transfer Complete (master mode).
Allowed values:
0: NotComplete: Transfer is not complete
1: Complete: NBYTES has been transfered
Bit 7: Transfer Complete Reload.
Allowed values:
0: NotComplete: Transfer is not complete
1: Complete: NBYTES has been transfered
Bit 8: Bus error.
Allowed values:
0: NoError: No bus error
1: Error: Misplaced Start and Stop condition is detected
Bit 9: Arbitration lost.
Allowed values:
0: NotLost: No arbitration lost
1: Lost: Arbitration lost
Bit 10: Overrun/Underrun (slave mode).
Allowed values:
0: NoOverrun: No overrun/underrun error occurs
1: Overrun: slave mode with NOSTRETCH=1, when an overrun/underrun error occurs
Bit 11: PEC Error in reception.
Allowed values:
0: Match: Received PEC does match with PEC register
1: NoMatch: Received PEC does not match with PEC register
Bit 12: Timeout or t_low detection flag.
Allowed values:
0: NoTimeout: No timeout occured
1: Timeout: Timeout occured
Bit 13: SMBus alert.
Allowed values:
0: NoAlert: SMBA alert is not detected
1: Alert: SMBA alert event is detected on SMBA pin
Bit 15: Bus busy.
Allowed values:
0: NotBusy: No communication is in progress on the bus
1: Busy: A communication is in progress on the bus
Bit 16: Transfer direction (Slave mode) This flag is updated when an address match event occurs (ADDR=1)..
Allowed values:
0: Write: Write transfer, slave enters receiver mode
1: Read: Read transfer, slave enters transmitter mode
Bits 17-23: Address match code (Slave mode).
Allowed values: 0x0-0x7f
Interrupt clear register
Offset: 0x1c, size: 32, reset: 0x00000000, access: write-only
9/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ALERTCF
w |
TIMOUTCF
w |
PECCF
w |
OVRCF
w |
ARLOCF
w |
BERRCF
w |
STOPCF
w |
NACKCF
w |
ADDRCF
w |
Bit 3: Address Matched flag clear.
Allowed values:
1: Clear: Clears the ADDR flag in ISR register
Bit 4: Not Acknowledge flag clear.
Allowed values:
1: Clear: Clears the NACK flag in ISR register
Bit 5: Stop detection flag clear.
Allowed values:
1: Clear: Clears the STOP flag in ISR register
Bit 8: Bus error flag clear.
Allowed values:
1: Clear: Clears the BERR flag in ISR register
Bit 9: Arbitration lost flag clear.
Allowed values:
1: Clear: Clears the ARLO flag in ISR register
Bit 10: Overrun/Underrun flag clear.
Allowed values:
1: Clear: Clears the OVR flag in ISR register
Bit 11: PEC Error flag clear.
Allowed values:
1: Clear: Clears the PEC flag in ISR register
Bit 12: Timeout detection flag clear.
Allowed values:
1: Clear: Clears the TIMOUT flag in ISR register
Bit 13: Alert flag clear.
Allowed values:
1: Clear: Clears the ALERT flag in ISR register
PEC register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PEC
r |
Receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXDATA
r |
Transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXDATA
rw |
0x40008800: Inter-integrated circuit
76/76 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | OAR1 | ||||||||||||||||||||||||||||||||
0xc | OAR2 | ||||||||||||||||||||||||||||||||
0x10 | TIMINGR | ||||||||||||||||||||||||||||||||
0x14 | TIMEOUTR | ||||||||||||||||||||||||||||||||
0x18 | ISR | ||||||||||||||||||||||||||||||||
0x1c | ICR | ||||||||||||||||||||||||||||||||
0x20 | PECR | ||||||||||||||||||||||||||||||||
0x24 | RXDR | ||||||||||||||||||||||||||||||||
0x28 | TXDR |
Control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
20/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PECEN
rw |
ALERTEN
rw |
SMBDEN
rw |
SMBHEN
rw |
GCEN
rw |
WUPEN
rw |
NOSTRETCH
rw |
SBC
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RXDMAEN
rw |
TXDMAEN
rw |
ANFOFF
rw |
DNF
rw |
ERRIE
rw |
TCIE
rw |
STOPIE
rw |
NACKIE
rw |
ADDRIE
rw |
RXIE
rw |
TXIE
rw |
PE
rw |
Bit 0: Peripheral enable Note: When PE=0, the I2C SCL and SDA lines are released. Internal state machines and status bits are put back to their reset value. When cleared, PE must be kept low for at least 3 APB clock cycles..
Allowed values:
0: Disabled: Peripheral disabled
1: Enabled: Peripheral enabled
Bit 1: TX Interrupt enable.
Allowed values:
0: Disabled: Transmit (TXIS) interrupt disabled
1: Enabled: Transmit (TXIS) interrupt enabled
Bit 2: RX Interrupt enable.
Allowed values:
0: Disabled: Receive (RXNE) interrupt disabled
1: Enabled: Receive (RXNE) interrupt enabled
Bit 3: Address match Interrupt enable (slave only).
Allowed values:
0: Disabled: Address match (ADDR) interrupts disabled
1: Enabled: Address match (ADDR) interrupts enabled
Bit 4: Not acknowledge received Interrupt enable.
Allowed values:
0: Disabled: Not acknowledge (NACKF) received interrupts disabled
1: Enabled: Not acknowledge (NACKF) received interrupts enabled
Bit 5: Stop detection Interrupt enable.
Allowed values:
0: Disabled: Stop detection (STOPF) interrupt disabled
1: Enabled: Stop detection (STOPF) interrupt enabled
Bit 6: Transfer Complete interrupt enable Note: Any of these events generate an interrupt: Transfer Complete (TC) Transfer Complete Reload (TCR).
Allowed values:
0: Disabled: Transfer Complete interrupt disabled
1: Enabled: Transfer Complete interrupt enabled
Bit 7: Error interrupts enable Note: Any of these errors generate an interrupt: Arbitration Loss (ARLO) Bus Error detection (BERR) Overrun/Underrun (OVR) Timeout detection (TIMEOUT) PEC error detection (PECERR) Alert pin event detection (ALERT).
Allowed values:
0: Disabled: Error detection interrupts disabled
1: Enabled: Error detection interrupts enabled
Bits 8-11: Digital noise filter These bits are used to configure the digital noise filter on SDA and SCL input. The digital filter, filters spikes with a length of up to DNF[3:0] * tI2CCLK ... Note: If the analog filter is also enabled, the digital filter is added to the analog filter. This filter can only be programmed when the I2C is disabled (PE = 0)..
Allowed values:
0: NoFilter: Digital filter disabled
1: Filter1: Digital filter enabled and filtering capability up to 1 tI2CCLK
2: Filter2: Digital filter enabled and filtering capability up to 2 tI2CCLK
3: Filter3: Digital filter enabled and filtering capability up to 3 tI2CCLK
4: Filter4: Digital filter enabled and filtering capability up to 4 tI2CCLK
5: Filter5: Digital filter enabled and filtering capability up to 5 tI2CCLK
6: Filter6: Digital filter enabled and filtering capability up to 6 tI2CCLK
7: Filter7: Digital filter enabled and filtering capability up to 7 tI2CCLK
8: Filter8: Digital filter enabled and filtering capability up to 8 tI2CCLK
9: Filter9: Digital filter enabled and filtering capability up to 9 tI2CCLK
10: Filter10: Digital filter enabled and filtering capability up to 10 tI2CCLK
11: Filter11: Digital filter enabled and filtering capability up to 11 tI2CCLK
12: Filter12: Digital filter enabled and filtering capability up to 12 tI2CCLK
13: Filter13: Digital filter enabled and filtering capability up to 13 tI2CCLK
14: Filter14: Digital filter enabled and filtering capability up to 14 tI2CCLK
15: Filter15: Digital filter enabled and filtering capability up to 15 tI2CCLK
Bit 12: Analog noise filter OFF Note: This bit can only be programmed when the I2C is disabled (PE = 0)..
Allowed values:
0: Enabled: Analog noise filter enabled
1: Disabled: Analog noise filter disabled
Bit 14: DMA transmission requests enable.
Allowed values:
0: Disabled: DMA mode disabled for transmission
1: Enabled: DMA mode enabled for transmission
Bit 15: DMA reception requests enable.
Allowed values:
0: Disabled: DMA mode disabled for reception
1: Enabled: DMA mode enabled for reception
Bit 16: Slave byte control This bit is used to enable hardware byte control in slave mode..
Allowed values:
0: Disabled: Slave byte control disabled
1: Enabled: Slave byte control enabled
Bit 17: Clock stretching disable This bit is used to disable clock stretching in slave mode. It must be kept cleared in master mode. Note: This bit can only be programmed when the I2C is disabled (PE = 0)..
Allowed values:
0: Enabled: Clock stretching enabled
1: Disabled: Clock stretching disabled
Bit 18: Wakeup from Stop mode enable Note: If the Wakeup from Stop mode feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to . Note: WUPEN can be set only when DNF = '0000'.
Allowed values:
0: Disabled: Wakeup from Stop mode disabled
1: Enabled: Wakeup from Stop mode enabled
Bit 19: General call enable.
Allowed values:
0: Disabled: General call disabled. Address 0b00000000 is NACKed
1: Enabled: General call enabled. Address 0b00000000 is ACKed
Bit 20: SMBus Host Address enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: Host address disabled. Address 0b0001000x is NACKed
1: Enabled: Host address enabled. Address 0b0001000x is ACKed
Bit 21: SMBus Device Default Address enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: Device default address disabled. Address 0b1100001x is NACKed
1: Enabled: Device default address enabled. Address 0b1100001x is ACKed
Bit 22: SMBus alert enable Note: When ALERTEN=0, the SMBA pin can be used as a standard GPIO. If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: In device mode (SMBHEN=Disabled) Releases SMBA pin high and Alert Response Address Header disabled (0001100x) followed by NACK. In host mode (SMBHEN=Enabled) SMBus Alert pin (SMBA) not supported
1: Enabled: In device mode (SMBHEN=Disabled) Drives SMBA pin low and Alert Response Address Header enabled (0001100x) followed by ACK.In host mode (SMBHEN=Enabled) SMBus Alert pin (SMBA) supported
Bit 23: PEC enable Note: If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: Disabled: PEC calculation disabled
1: Enabled: PEC calculation enabled
Control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
11/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PECBYTE
rw |
AUTOEND
rw |
RELOAD
rw |
NBYTES
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
NACK
rw |
STOP
rw |
START
rw |
HEAD10R
rw |
ADD10
rw |
RD_WRN
rw |
SADD
rw |
Bits 0-9: Slave address (master mode) In 7-bit addressing mode (ADD10 = 0): SADD[7:1] should be written with the 7-bit slave address to be sent. The bits SADD[9], SADD[8] and SADD[0] are don't care. In 10-bit addressing mode (ADD10 = 1): SADD[9:0] should be written with the 10-bit slave address to be sent. Note: Changing these bits when the START bit is set is not allowed..
Allowed values: 0x0-0x3ff
Bit 10: Transfer direction (master mode) Note: Changing this bit when the START bit is set is not allowed..
Allowed values:
0: Write: Master requests a write transfer
1: Read: Master requests a read transfer
Bit 11: 10-bit addressing mode (master mode) Note: Changing this bit when the START bit is set is not allowed..
Allowed values:
0: Bit7: The master operates in 7-bit addressing mode
1: Bit10: The master operates in 10-bit addressing mode
Bit 12: 10-bit address header only read direction (master receiver mode) Note: Changing this bit when the START bit is set is not allowed..
Allowed values:
0: Complete: The master sends the complete 10 bit slave address read sequence
1: Partial: The master only sends the 1st 7 bits of the 10 bit address, followed by Read direction
Bit 13: Start generation This bit is set by software, and cleared by hardware after the Start followed by the address sequence is sent, by an arbitration loss, by a timeout error detection, or when PE = 0. It can also be cleared by software by writing '1' to the ADDRCF bit in the I2C_ICR register. If the I2C is already in master mode with AUTOEND = 0, setting this bit generates a Repeated Start condition when RELOAD=0, after the end of the NBYTES transfer. Otherwise setting this bit generates a START condition once the bus is free. Note: Writing '0' to this bit has no effect. The START bit can be set even if the bus is BUSY or I2C is in slave mode. This bit has no effect when RELOAD is set..
Allowed values:
0: NoStart: No Start generation
1: Start: Restart/Start generation
Bit 14: Stop generation (master mode) The bit is set by software, cleared by hardware when a STOP condition is detected, or when PE = 0. In Master Mode: Note: Writing '0' to this bit has no effect..
Allowed values:
0: NoStop: No Stop generation
1: Stop: Stop generation after current byte transfer
Bit 15: NACK generation (slave mode) The bit is set by software, cleared by hardware when the NACK is sent, or when a STOP condition or an Address matched is received, or when PE=0. Note: Writing '0' to this bit has no effect. This bit is used in slave mode only: in master receiver mode, NACK is automatically generated after last byte preceding STOP or RESTART condition, whatever the NACK bit value. When an overrun occurs in slave receiver NOSTRETCH mode, a NACK is automatically generated whatever the NACK bit value. When hardware PEC checking is enabled (PECBYTE=1), the PEC acknowledge value does not depend on the NACK value..
Allowed values:
0: Ack: an ACK is sent after current received byte
1: Nack: a NACK is sent after current received byte
Bits 16-23: Number of bytes The number of bytes to be transmitted/received is programmed there. This field is don't care in slave mode with SBC=0. Note: Changing these bits when the START bit is set is not allowed..
Allowed values: 0x0-0xff
Bit 24: NBYTES reload mode This bit is set and cleared by software..
Allowed values:
0: Completed: The transfer is completed after the NBYTES data transfer (STOP or RESTART will follow)
1: NotCompleted: The transfer is not completed after the NBYTES data transfer (NBYTES will be reloaded)
Bit 25: Automatic end mode (master mode) This bit is set and cleared by software. Note: This bit has no effect in slave mode or when the RELOAD bit is set..
Allowed values:
0: Software: Software end mode: TC flag is set when NBYTES data are transferred, stretching SCL low
1: Automatic: Automatic end mode: a STOP condition is automatically sent when NBYTES data are transferred
Bit 26: Packet error checking byte This bit is set by software, and cleared by hardware when the PEC is transferred, or when a STOP condition or an Address matched is received, also when PE=0. Note: Writing '0' to this bit has no effect. This bit has no effect when RELOAD is set. This bit has no effect is slave mode when SBC=0. If the SMBus feature is not supported, this bit is reserved and forced by hardware to '0'. Refer to ..
Allowed values:
0: NoPec: No PEC transfer
1: Pec: PEC transmission/reception is requested
Own address register 1
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
3/3 fields covered.
Bits 0-9: Interface own slave address 7-bit addressing mode: OA1[7:1] contains the 7-bit own slave address. The bits OA1[9], OA1[8] and OA1[0] are don't care. 10-bit addressing mode: OA1[9:0] contains the 10-bit own slave address. Note: These bits can be written only when OA1EN=0..
Allowed values: 0x0-0x3ff
Bit 10: Own Address 1 10-bit mode Note: This bit can be written only when OA1EN=0..
Allowed values:
0: Bit7: Own address 1 is a 7-bit address
1: Bit10: Own address 1 is a 10-bit address
Bit 15: Own Address 1 enable.
Allowed values:
0: Disabled: Own address 1 disabled. The received slave address OA1 is NACKed
1: Enabled: Own address 1 enabled. The received slave address OA1 is ACKed
Own address register 2
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
3/3 fields covered.
Bits 1-7: Interface address 7-bit addressing mode: 7-bit address Note: These bits can be written only when OA2EN=0..
Allowed values: 0x0-0x7f
Bits 8-10: Own Address 2 masks Note: These bits can be written only when OA2EN=0. As soon as OA2MSK is not equal to 0, the reserved I2C addresses (0b0000xxx and 0b1111xxx) are not acknowledged even if the comparison matches..
Allowed values:
0: NoMask: No mask
1: Mask1: OA2[1] is masked and don’t care. Only OA2[7:2] are compared
2: Mask2: OA2[2:1] are masked and don’t care. Only OA2[7:3] are compared
3: Mask3: OA2[3:1] are masked and don’t care. Only OA2[7:4] are compared
4: Mask4: OA2[4:1] are masked and don’t care. Only OA2[7:5] are compared
5: Mask5: OA2[5:1] are masked and don’t care. Only OA2[7:6] are compared
6: Mask6: OA2[6:1] are masked and don’t care. Only OA2[7] is compared.
7: Mask7: OA2[7:1] are masked and don’t care. No comparison is done, and all (except reserved) 7-bit received addresses are acknowledged
Bit 15: Own Address 2 enable.
Allowed values:
0: Disabled: Own address 2 disabled. The received slave address OA2 is NACKed
1: Enabled: Own address 2 enabled. The received slave address OA2 is ACKed
Timing register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESC
rw |
SCLDEL
rw |
SDADEL
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SCLH
rw |
SCLL
rw |
Bits 0-7: SCL low period (master mode).
Allowed values: 0x0-0xff
Bits 8-15: SCL high period (master mode).
Allowed values: 0x0-0xff
Bits 16-19: Data hold time.
Allowed values: 0x0-0xf
Bits 20-23: Data setup time.
Allowed values: 0x0-0xf
Bits 28-31: Timing prescaler.
Allowed values: 0x0-0xf
Status register 1
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
5/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TEXTEN
rw |
TIMEOUTB
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TIMOUTEN
rw |
TIDLE
rw |
TIMEOUTA
rw |
Bits 0-11: Bus Timeout A This field is used to configure: The SCL low timeout condition tTIMEOUT when TIDLE=0 tTIMEOUT= (TIMEOUTA+1) x 2048 x tI2CCLK The bus idle condition (both SCL and SDA high) when TIDLE=1 tIDLE= (TIMEOUTA+1) x 4 x tI2CCLK Note: These bits can be written only when TIMOUTEN=0..
Allowed values: 0x0-0xfff
Bit 12: Idle clock timeout detection Note: This bit can be written only when TIMOUTEN=0..
Allowed values:
0: Disabled: TIMEOUTA is used to detect SCL low timeout
1: Enabled: TIMEOUTA is used to detect both SCL and SDA high timeout (bus idle condition)
Bit 15: Clock timeout enable.
Allowed values:
0: Disabled: SCL timeout detection is disabled
1: Enabled: SCL timeout detection is enabled
Bits 16-27: Bus timeout B This field is used to configure the cumulative clock extension timeout: In master mode, the master cumulative clock low extend time (tLOW:MEXT) is detected In slave mode, the slave cumulative clock low extend time (tLOW:SEXT) is detected tLOW:EXT= (TIMEOUTB+1) x 2048 x tI2CCLK Note: These bits can be written only when TEXTEN=0..
Allowed values: 0x0-0xfff
Bit 31: Extended clock timeout enable.
Allowed values:
0: Disabled: Extended clock timeout detection is disabled
1: Enabled: Extended clock timeout detection is enabled
Interrupt and Status register
Offset: 0x18, size: 32, reset: 0x00000001, access: Unspecified
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADDCODE
r |
DIR
r |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
BUSY
r |
ALERT
r |
TIMEOUT
r |
PECERR
r |
OVR
r |
ARLO
r |
BERR
r |
TCR
r |
TC
r |
STOPF
r |
NACKF
r |
ADDR
r |
RXNE
r |
TXIS
rw |
TXE
rw |
Bit 0: Transmit data register empty (transmitters).
Allowed values:
0: NotEmpty: TXDR register not empty
1: Empty: TXDR register empty
Bit 1: Transmit interrupt status (transmitters).
Allowed values:
0: NotEmpty: The TXDR register is not empty
1: Empty: The TXDR register is empty and the data to be transmitted must be written in the TXDR register
Bit 2: Receive data register not empty (receivers).
Allowed values:
0: Empty: The RXDR register is empty
1: NotEmpty: Received data is copied into the RXDR register, and is ready to be read
Bit 3: Address matched (slave mode).
Allowed values:
0: NotMatch: Adress mismatched or not received
1: Match: Received slave address matched with one of the enabled slave addresses
Bit 4: Not acknowledge received flag.
Allowed values:
0: NoNack: No NACK has been received
1: Nack: NACK has been received
Bit 5: Stop detection flag.
Allowed values:
0: NoStop: No Stop condition detected
1: Stop: Stop condition detected
Bit 6: Transfer Complete (master mode).
Allowed values:
0: NotComplete: Transfer is not complete
1: Complete: NBYTES has been transfered
Bit 7: Transfer Complete Reload.
Allowed values:
0: NotComplete: Transfer is not complete
1: Complete: NBYTES has been transfered
Bit 8: Bus error.
Allowed values:
0: NoError: No bus error
1: Error: Misplaced Start and Stop condition is detected
Bit 9: Arbitration lost.
Allowed values:
0: NotLost: No arbitration lost
1: Lost: Arbitration lost
Bit 10: Overrun/Underrun (slave mode).
Allowed values:
0: NoOverrun: No overrun/underrun error occurs
1: Overrun: slave mode with NOSTRETCH=1, when an overrun/underrun error occurs
Bit 11: PEC Error in reception.
Allowed values:
0: Match: Received PEC does match with PEC register
1: NoMatch: Received PEC does not match with PEC register
Bit 12: Timeout or t_low detection flag.
Allowed values:
0: NoTimeout: No timeout occured
1: Timeout: Timeout occured
Bit 13: SMBus alert.
Allowed values:
0: NoAlert: SMBA alert is not detected
1: Alert: SMBA alert event is detected on SMBA pin
Bit 15: Bus busy.
Allowed values:
0: NotBusy: No communication is in progress on the bus
1: Busy: A communication is in progress on the bus
Bit 16: Transfer direction (Slave mode) This flag is updated when an address match event occurs (ADDR=1)..
Allowed values:
0: Write: Write transfer, slave enters receiver mode
1: Read: Read transfer, slave enters transmitter mode
Bits 17-23: Address match code (Slave mode).
Allowed values: 0x0-0x7f
Interrupt clear register
Offset: 0x1c, size: 32, reset: 0x00000000, access: write-only
9/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ALERTCF
w |
TIMOUTCF
w |
PECCF
w |
OVRCF
w |
ARLOCF
w |
BERRCF
w |
STOPCF
w |
NACKCF
w |
ADDRCF
w |
Bit 3: Address Matched flag clear.
Allowed values:
1: Clear: Clears the ADDR flag in ISR register
Bit 4: Not Acknowledge flag clear.
Allowed values:
1: Clear: Clears the NACK flag in ISR register
Bit 5: Stop detection flag clear.
Allowed values:
1: Clear: Clears the STOP flag in ISR register
Bit 8: Bus error flag clear.
Allowed values:
1: Clear: Clears the BERR flag in ISR register
Bit 9: Arbitration lost flag clear.
Allowed values:
1: Clear: Clears the ARLO flag in ISR register
Bit 10: Overrun/Underrun flag clear.
Allowed values:
1: Clear: Clears the OVR flag in ISR register
Bit 11: PEC Error flag clear.
Allowed values:
1: Clear: Clears the PEC flag in ISR register
Bit 12: Timeout detection flag clear.
Allowed values:
1: Clear: Clears the TIMOUT flag in ISR register
Bit 13: Alert flag clear.
Allowed values:
1: Clear: Clears the ALERT flag in ISR register
PEC register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PEC
r |
Receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXDATA
r |
Transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXDATA
rw |
0x40003000: Independent watchdog
7/7 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | KR | ||||||||||||||||||||||||||||||||
0x4 | PR | ||||||||||||||||||||||||||||||||
0x8 | RLR | ||||||||||||||||||||||||||||||||
0xc | SR | ||||||||||||||||||||||||||||||||
0x10 | WINR |
Key register
Offset: 0x0, size: 32, reset: 0x00000000, access: write-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
KEY
w |
Prescaler register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PR
rw |
Bits 0-2: Prescaler divider These bits are write access protected see . They are written by software to select the prescaler divider feeding the counter clock. PVU bit of the must be reset in order to be able to change the prescaler divider. Note: Reading this register returns the prescaler value from the VDD voltage domain. This value may not be up to date/valid if a write operation to this register is ongoing. For this reason the value read from this register is valid only when the PVU bit in the status register (IWDG_SR) is reset..
Allowed values:
0: DivideBy4: Divider /4
1: DivideBy8: Divider /8
2: DivideBy16: Divider /16
3: DivideBy32: Divider /32
4: DivideBy64: Divider /64
5: DivideBy128: Divider /128
6: DivideBy256: Divider /256
Reload register
Offset: 0x8, size: 32, reset: 0x00000FFF, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RL
rw |
Status register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-only
3/3 fields covered.
Bit 0: Watchdog prescaler value update This bit is set by hardware to indicate that an update of the prescaler value is ongoing. It is reset by hardware when the prescaler update operation is completed in the VDD voltage domain (takes up to five LSI cycles). Prescaler value can be updated only when PVU bit is reset..
Bit 1: Watchdog counter reload value update This bit is set by hardware to indicate that an update of the reload value is ongoing. It is reset by hardware when the reload value update operation is completed in the VDD voltage domain (takes up to five LSI cycles). Reload value can be updated only when RVU bit is reset..
Bit 2: Watchdog counter window value update This bit is set by hardware to indicate that an update of the window value is ongoing. It is reset by hardware when the reload value update operation is completed in the VDD voltage domain (takes up to five LSI cycles). Window value can be updated only when WVU bit is reset..
Window register
Offset: 0x10, size: 32, reset: 0x00000FFF, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WIN
rw |
0x40007c00: Low power timer
8/44 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | ISR | ||||||||||||||||||||||||||||||||
0x4 | ICR | ||||||||||||||||||||||||||||||||
0x8 | IER | ||||||||||||||||||||||||||||||||
0xc | CFGR | ||||||||||||||||||||||||||||||||
0x10 | CR | ||||||||||||||||||||||||||||||||
0x14 | CMP | ||||||||||||||||||||||||||||||||
0x18 | ARR | ||||||||||||||||||||||||||||||||
0x1c | CNT | ||||||||||||||||||||||||||||||||
0x24 | CFGR2 |
Interrupt and Status Register
Offset: 0x0, size: 32, reset: 0x00000000, access: read-only
7/7 fields covered.
Bit 0: Compare match The CMPM bit is set by hardware to inform application that LPTIM_CNT register value reached the LPTIM_CMP register's value..
Bit 1: Autoreload match ARRM is set by hardware to inform application that LPTIM_CNT register's value reached the LPTIM_ARR register's value. ARRM flag can be cleared by writing 1 to the ARRMCF bit in the LPTIM_ICR register..
Bit 2: External trigger edge event EXTTRIG is set by hardware to inform application that a valid edge on the selected external trigger input has occurred. If the trigger is ignored because the timer has already started, then this flag is not set. EXTTRIG flag can be cleared by writing 1 to the EXTTRIGCF bit in the LPTIM_ICR register..
Bit 3: Compare register update OK CMPOK is set by hardware to inform application that the APB bus write operation to the LPTIM_CMP register has been successfully completed..
Bit 4: Autoreload register update OK ARROK is set by hardware to inform application that the APB bus write operation to the LPTIM_ARR register has been successfully completed. ARROK flag can be cleared by writing 1 to the ARROKCF bit in the LPTIM_ICR register..
Bit 5: Counter direction change down to up In Encoder mode, UP bit is set by hardware to inform application that the counter direction has changed from down to up. UP flag can be cleared by writing 1 to the UPCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Bit 6: Counter direction change up to down In Encoder mode, DOWN bit is set by hardware to inform application that the counter direction has changed from up to down. DOWN flag can be cleared by writing 1 to the DOWNCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Interrupt Clear Register
Offset: 0x4, size: 32, reset: 0x00000000, access: write-only
0/7 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DOWNCF
w |
UPCF
w |
ARROKCF
w |
CMPOKCF
w |
EXTTRIGCF
w |
ARRMCF
w |
CMPMCF
w |
Bit 0: Compare match clear flag Writing 1 to this bit clears the CMP flag in the LPTIM_ISR register.
Bit 1: Autoreload match clear flag Writing 1 to this bit clears the ARRM flag in the LPTIM_ISR register.
Bit 2: External trigger valid edge clear flag Writing 1 to this bit clears the EXTTRIG flag in the LPTIM_ISR register.
Bit 3: Compare register update OK clear flag Writing 1 to this bit clears the CMPOK flag in the LPTIM_ISR register.
Bit 4: Autoreload register update OK clear flag Writing 1 to this bit clears the ARROK flag in the LPTIM_ISR register.
Bit 5: Direction change to UP clear flag Writing 1 to this bit clear the UP flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Bit 6: Direction change to down clear flag Writing 1 to this bit clear the DOWN flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Interrupt Enable Register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DOWNIE
rw |
UPIE
rw |
ARROKIE
rw |
CMPOKIE
rw |
EXTTRIGIE
rw |
ARRMIE
rw |
CMPMIE
rw |
Bit 0: Compare match Interrupt Enable.
Bit 1: Autoreload match Interrupt Enable.
Bit 2: External trigger valid edge Interrupt Enable.
Bit 3: Compare register update OK Interrupt Enable.
Bit 4: Autoreload register update OK Interrupt Enable.
Bit 5: Direction change to UP Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Bit 6: Direction change to down Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Configuration Register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/13 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ENC
rw |
COUNTMODE
rw |
PRELOAD
rw |
WAVPOL
rw |
WAVE
rw |
TIMOUT
rw |
TRIGEN
rw |
|||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TRIGSEL
rw |
PRESC
rw |
TRGFLT
rw |
CKFLT
rw |
CKPOL
rw |
CKSEL
rw |
Bit 0: Clock selector The CKSEL bit selects which clock source the LPTIM will use:.
Bits 1-2: Clock Polarity If LPTIM is clocked by an external clock source: When the LPTIM is clocked by an external clock source, CKPOL bits is used to configure the active edge or edges used by the counter: If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 1 is active. If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 2 is active. Refer to for more details about Encoder mode sub-modes..
Bits 3-4: Configurable digital filter for external clock The CKFLT value sets the number of consecutive equal samples that should be detected when a level change occurs on an external clock signal before it is considered as a valid level transition. An internal clock source must be present to use this feature.
Bits 6-7: Configurable digital filter for trigger The TRGFLT value sets the number of consecutive equal samples that should be detected when a level change occurs on an internal trigger before it is considered as a valid level transition. An internal clock source must be present to use this feature.
Bits 9-11: Clock prescaler The PRESC bits configure the prescaler division factor. It can be one among the following division factors:.
Bits 13-15: Trigger selector The TRIGSEL bits select the trigger source that will serve as a trigger event for the LPTIM among the below 8 available sources: See for details..
Bits 17-18: Trigger enable and polarity The TRIGEN bits controls whether the LPTIM counter is started by an external trigger or not. If the external trigger option is selected, three configurations are possible for the trigger active edge:.
Bit 19: Timeout enable The TIMOUT bit controls the Timeout feature.
Bit 20: Waveform shape The WAVE bit controls the output shape.
Bit 21: Waveform shape polarity The WAVEPOL bit controls the output polarity.
Bit 22: Registers update mode The PRELOAD bit controls the LPTIM_ARR and the LPTIM_CMP registers update modality.
Bit 23: counter mode enabled The COUNTMODE bit selects which clock source is used by the LPTIM to clock the counter:.
Bit 24: Encoder mode enable The ENC bit controls the Encoder mode Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Control Register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
Bit 0: LPTIM enable The ENABLE bit is set and cleared by software..
Bit 1: LPTIM start in Single mode This bit is set by software and cleared by hardware. In case of software start (TRIGEN[1:0] = '00'), setting this bit starts the LPTIM in single pulse mode. If the software start is disabled (TRIGEN[1:0] different than '00'), setting this bit starts the LPTIM in single pulse mode as soon as an external trigger is detected. If this bit is set when the LPTIM is in continuous counting mode, then the LPTIM will stop at the following match between LPTIM_ARR and LPTIM_CNT registers. This bit can only be set when the LPTIM is enabled. It will be automatically reset by hardware..
Bit 2: Timer start in Continuous mode This bit is set by software and cleared by hardware. In case of software start (TRIGEN[1:0] = '00'), setting this bit starts the LPTIM in Continuous mode. If the software start is disabled (TRIGEN[1:0] different than '00'), setting this bit starts the timer in Continuous mode as soon as an external trigger is detected. If this bit is set when a single pulse mode counting is ongoing, then the timer will not stop at the next match between the LPTIM_ARR and LPTIM_CNT registers and the LPTIM counter keeps counting in Continuous mode. This bit can be set only when the LPTIM is enabled. It will be automatically reset by hardware..
Bit 3: Counter reset This bit is set by software and cleared by hardware. When set to '1' this bit will trigger a synchronous reset of the LPTIM_CNT counter register. Due to the synchronous nature of this reset, it only takes place after a synchronization delay of 3 LPTimer core clock cycles (LPTimer core clock may be different from APB clock). COUNTRST must never be set to '1' by software before it is already cleared to '0' by hardware. Software should consequently check that COUNTRST bit is already cleared to '0' before attempting to set it to '1'..
Bit 4: Reset after read enable This bit is set and cleared by software. When RSTARE is set to '1', any read access to LPTIM_CNT register will asynchronously reset LPTIM_CNT register content..
Compare Register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CMP
rw |
Autoreload Register
Offset: 0x18, size: 32, reset: 0x00000001, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARR
rw |
Counter Register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CNT
r |
LPTIM configuration register 2
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-1: LPTIM input 1 selection The IN1SEL bits control the LPTIM Input 1 multiplexer, which connects LPTIM Input 1 to one of the available inputs. For connection details refer to ..
Bits 4-5: LPTIM input 2 selection The IN2SEL bits control the LPTIM Input 2 multiplexer, which connect LPTIM Input 2 to one of the available inputs. For connection details refer to . Note: If the LPTIM does not support encoder mode feature, these bits are reserved. Please refer to ..
0x40009400: Low power timer
8/44 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | ISR | ||||||||||||||||||||||||||||||||
0x4 | ICR | ||||||||||||||||||||||||||||||||
0x8 | IER | ||||||||||||||||||||||||||||||||
0xc | CFGR | ||||||||||||||||||||||||||||||||
0x10 | CR | ||||||||||||||||||||||||||||||||
0x14 | CMP | ||||||||||||||||||||||||||||||||
0x18 | ARR | ||||||||||||||||||||||||||||||||
0x1c | CNT | ||||||||||||||||||||||||||||||||
0x24 | CFGR2 |
Interrupt and Status Register
Offset: 0x0, size: 32, reset: 0x00000000, access: read-only
7/7 fields covered.
Bit 0: Compare match The CMPM bit is set by hardware to inform application that LPTIM_CNT register value reached the LPTIM_CMP register's value..
Bit 1: Autoreload match ARRM is set by hardware to inform application that LPTIM_CNT register's value reached the LPTIM_ARR register's value. ARRM flag can be cleared by writing 1 to the ARRMCF bit in the LPTIM_ICR register..
Bit 2: External trigger edge event EXTTRIG is set by hardware to inform application that a valid edge on the selected external trigger input has occurred. If the trigger is ignored because the timer has already started, then this flag is not set. EXTTRIG flag can be cleared by writing 1 to the EXTTRIGCF bit in the LPTIM_ICR register..
Bit 3: Compare register update OK CMPOK is set by hardware to inform application that the APB bus write operation to the LPTIM_CMP register has been successfully completed..
Bit 4: Autoreload register update OK ARROK is set by hardware to inform application that the APB bus write operation to the LPTIM_ARR register has been successfully completed. ARROK flag can be cleared by writing 1 to the ARROKCF bit in the LPTIM_ICR register..
Bit 5: Counter direction change down to up In Encoder mode, UP bit is set by hardware to inform application that the counter direction has changed from down to up. UP flag can be cleared by writing 1 to the UPCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Bit 6: Counter direction change up to down In Encoder mode, DOWN bit is set by hardware to inform application that the counter direction has changed from up to down. DOWN flag can be cleared by writing 1 to the DOWNCF bit in the LPTIM_ICR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Interrupt Clear Register
Offset: 0x4, size: 32, reset: 0x00000000, access: write-only
0/7 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DOWNCF
w |
UPCF
w |
ARROKCF
w |
CMPOKCF
w |
EXTTRIGCF
w |
ARRMCF
w |
CMPMCF
w |
Bit 0: Compare match clear flag Writing 1 to this bit clears the CMP flag in the LPTIM_ISR register.
Bit 1: Autoreload match clear flag Writing 1 to this bit clears the ARRM flag in the LPTIM_ISR register.
Bit 2: External trigger valid edge clear flag Writing 1 to this bit clears the EXTTRIG flag in the LPTIM_ISR register.
Bit 3: Compare register update OK clear flag Writing 1 to this bit clears the CMPOK flag in the LPTIM_ISR register.
Bit 4: Autoreload register update OK clear flag Writing 1 to this bit clears the ARROK flag in the LPTIM_ISR register.
Bit 5: Direction change to UP clear flag Writing 1 to this bit clear the UP flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Bit 6: Direction change to down clear flag Writing 1 to this bit clear the DOWN flag in the LPTIM_ISR register. Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Interrupt Enable Register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DOWNIE
rw |
UPIE
rw |
ARROKIE
rw |
CMPOKIE
rw |
EXTTRIGIE
rw |
ARRMIE
rw |
CMPMIE
rw |
Bit 0: Compare match Interrupt Enable.
Bit 1: Autoreload match Interrupt Enable.
Bit 2: External trigger valid edge Interrupt Enable.
Bit 3: Compare register update OK Interrupt Enable.
Bit 4: Autoreload register update OK Interrupt Enable.
Bit 5: Direction change to UP Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Bit 6: Direction change to down Interrupt Enable Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Configuration Register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/13 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ENC
rw |
COUNTMODE
rw |
PRELOAD
rw |
WAVPOL
rw |
WAVE
rw |
TIMOUT
rw |
TRIGEN
rw |
|||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TRIGSEL
rw |
PRESC
rw |
TRGFLT
rw |
CKFLT
rw |
CKPOL
rw |
CKSEL
rw |
Bit 0: Clock selector The CKSEL bit selects which clock source the LPTIM will use:.
Bits 1-2: Clock Polarity If LPTIM is clocked by an external clock source: When the LPTIM is clocked by an external clock source, CKPOL bits is used to configure the active edge or edges used by the counter: If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 1 is active. If the LPTIM is configured in Encoder mode (ENC bit is set), the encoder sub-mode 2 is active. Refer to for more details about Encoder mode sub-modes..
Bits 3-4: Configurable digital filter for external clock The CKFLT value sets the number of consecutive equal samples that should be detected when a level change occurs on an external clock signal before it is considered as a valid level transition. An internal clock source must be present to use this feature.
Bits 6-7: Configurable digital filter for trigger The TRGFLT value sets the number of consecutive equal samples that should be detected when a level change occurs on an internal trigger before it is considered as a valid level transition. An internal clock source must be present to use this feature.
Bits 9-11: Clock prescaler The PRESC bits configure the prescaler division factor. It can be one among the following division factors:.
Bits 13-15: Trigger selector The TRIGSEL bits select the trigger source that will serve as a trigger event for the LPTIM among the below 8 available sources: See for details..
Bits 17-18: Trigger enable and polarity The TRIGEN bits controls whether the LPTIM counter is started by an external trigger or not. If the external trigger option is selected, three configurations are possible for the trigger active edge:.
Bit 19: Timeout enable The TIMOUT bit controls the Timeout feature.
Bit 20: Waveform shape The WAVE bit controls the output shape.
Bit 21: Waveform shape polarity The WAVEPOL bit controls the output polarity.
Bit 22: Registers update mode The PRELOAD bit controls the LPTIM_ARR and the LPTIM_CMP registers update modality.
Bit 23: counter mode enabled The COUNTMODE bit selects which clock source is used by the LPTIM to clock the counter:.
Bit 24: Encoder mode enable The ENC bit controls the Encoder mode Note: If the LPTIM does not support encoder mode feature, this bit is reserved. Please refer to ..
Control Register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
Bit 0: LPTIM enable The ENABLE bit is set and cleared by software..
Bit 1: LPTIM start in Single mode This bit is set by software and cleared by hardware. In case of software start (TRIGEN[1:0] = '00'), setting this bit starts the LPTIM in single pulse mode. If the software start is disabled (TRIGEN[1:0] different than '00'), setting this bit starts the LPTIM in single pulse mode as soon as an external trigger is detected. If this bit is set when the LPTIM is in continuous counting mode, then the LPTIM will stop at the following match between LPTIM_ARR and LPTIM_CNT registers. This bit can only be set when the LPTIM is enabled. It will be automatically reset by hardware..
Bit 2: Timer start in Continuous mode This bit is set by software and cleared by hardware. In case of software start (TRIGEN[1:0] = '00'), setting this bit starts the LPTIM in Continuous mode. If the software start is disabled (TRIGEN[1:0] different than '00'), setting this bit starts the timer in Continuous mode as soon as an external trigger is detected. If this bit is set when a single pulse mode counting is ongoing, then the timer will not stop at the next match between the LPTIM_ARR and LPTIM_CNT registers and the LPTIM counter keeps counting in Continuous mode. This bit can be set only when the LPTIM is enabled. It will be automatically reset by hardware..
Bit 3: Counter reset This bit is set by software and cleared by hardware. When set to '1' this bit will trigger a synchronous reset of the LPTIM_CNT counter register. Due to the synchronous nature of this reset, it only takes place after a synchronization delay of 3 LPTimer core clock cycles (LPTimer core clock may be different from APB clock). COUNTRST must never be set to '1' by software before it is already cleared to '0' by hardware. Software should consequently check that COUNTRST bit is already cleared to '0' before attempting to set it to '1'..
Bit 4: Reset after read enable This bit is set and cleared by software. When RSTARE is set to '1', any read access to LPTIM_CNT register will asynchronously reset LPTIM_CNT register content..
Compare Register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CMP
rw |
Autoreload Register
Offset: 0x18, size: 32, reset: 0x00000001, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARR
rw |
Counter Register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CNT
r |
LPTIM configuration register 2
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-1: LPTIM input 1 selection The IN1SEL bits control the LPTIM Input 1 multiplexer, which connects LPTIM Input 1 to one of the available inputs. For connection details refer to ..
Bits 4-5: LPTIM input 2 selection The IN2SEL bits control the LPTIM Input 2 multiplexer, which connect LPTIM Input 2 to one of the available inputs. For connection details refer to . Note: If the LPTIM does not support encoder mode feature, these bits are reserved. Please refer to ..
0x40008000: Low-power universal asynchronous receiver transmitter
39/120 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1_disabled | ||||||||||||||||||||||||||||||||
0x0 | CR1_enabled | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | CR3 | ||||||||||||||||||||||||||||||||
0xc | BRR | ||||||||||||||||||||||||||||||||
0x18 | RQR | ||||||||||||||||||||||||||||||||
0x1c | ISR_disabled | ||||||||||||||||||||||||||||||||
0x1c | ISR_enabled | ||||||||||||||||||||||||||||||||
0x20 | ICR | ||||||||||||||||||||||||||||||||
0x24 | RDR | ||||||||||||||||||||||||||||||||
0x28 | TDR | ||||||||||||||||||||||||||||||||
0x2c | PRESC |
LPUART control register 1 [alternate]
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
0/19 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FIFOEN
rw |
M1
rw |
DEAT
rw |
DEDT
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXFNFIE
rw |
TCIE
rw |
RXFNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: LPUART enable When this bit is cleared, the LPUART prescalers and outputs are stopped immediately, and current operations are discarded. The configuration of the LPUART is kept, but all the status flags, in the LPUART_ISR are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be reset before and the software must wait for the TC bit in the LPUART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit..
Bit 1: LPUART enable in Stop mode When this bit is cleared, the LPUART is not able to wake up the MCU from low-power mode. When this bit is set, the LPUART is able to wake up the MCU from low-power mode, provided that the LPUART clock selection is HSI or LSE in the RCC. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it on exit from low-power mode..
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word. In order to generate an idle character, the TE must not be immediately written to 1. In order to ensure the required duration, the software can poll the TEACK bit in the LPUART_ISR register. When TE is set there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the LPUART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1) description). This bit can only be written when the LPUART is disabled (UE=0)..
Bit 13: Mute mode enable This bit activates the Mute mode function of the LPUART. When set, the LPUART can switch between the active and Mute modes, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal.It is expressed in lpuart_ker_ck clock cycles. For more details, refer control and RS485 Driver Enable. If the LPUART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in lpuart_ker_ck clock cycles. For more details, refer . This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 Start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 Start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 Start bit, 7 Data bits, n Stop bit This bit can only be written when the LPUART is disabled (UE=0). Note: In 7-bit data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software..
LPUART control register 1 [alternate]
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
0/21 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXFFIE
rw |
TXFEIE
rw |
FIFOEN
rw |
M1
rw |
DEAT
rw |
DEDT
rw |
||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXFNFIE
rw |
TCIE
rw |
RXFNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: LPUART enable When this bit is cleared, the LPUART prescalers and outputs are stopped immediately, and current operations are discarded. The configuration of the LPUART is kept, but all the status flags, in the LPUART_ISR are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be reset before and the software must wait for the TC bit in the LPUART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit..
Bit 1: LPUART enable in Stop mode When this bit is cleared, the LPUART is not able to wake up the MCU from low-power mode. When this bit is set, the LPUART is able to wake up the MCU from low-power mode, provided that the LPUART clock selection is HSI or LSE in the RCC. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it on exit from low-power mode..
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word. In order to generate an idle character, the TE must not be immediately written to 1. In order to ensure the required duration, the software can poll the TEACK bit in the LPUART_ISR register. When TE is set there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the LPUART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1) description). This bit can only be written when the LPUART is disabled (UE=0)..
Bit 13: Mute mode enable This bit activates the Mute mode function of the LPUART. When set, the LPUART can switch between the active and Mute modes, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal.It is expressed in lpuart_ker_ck clock cycles. For more details, refer control and RS485 Driver Enable. If the LPUART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in lpuart_ker_ck clock cycles. For more details, refer . This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 Start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 Start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 Start bit, 7 Data bits, n Stop bit This bit can only be written when the LPUART is disabled (UE=0). Note: In 7-bit data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software..
Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..
Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..
LPUART control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
0/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADD
rw |
MSBFIRST
rw |
DATAINV
rw |
TXINV
rw |
RXINV
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SWAP
rw |
STOP
rw |
ADDM7
rw |
Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the LPUART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..
Bits 12-13: STOP bits These bits are used for programming the stop bits. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bits 24-31: Address of the LPUART node ADD[7:4]: These bits give the address of the LPUART node or a character code to be recognized. They are used to wake up the MCU with 7-bit address mark detection in multiprocessor communication during Mute mode or Stop mode. The MSB of the character sent by the transmitter should be equal to 1. They can also be used for character detection during normal reception, Mute mode inactive (for example, end of block detection in ModBus protocol). In this case, the whole received character (8-bit) is compared to the ADD[7:0] value and CMF flag is set on match. These bits can only be written when reception is disabled (RE = 0) or the LPUART is disabled (UE=0) ADD[3:0]: These bits give the address of the LPUART node or a character code to be recognized. They are used for wakeup with address mark detection in multiprocessor communication during Mute mode or low-power mode. These bits can only be written when reception is disabled (RE = 0) or the LPUART is disabled (UE=0).
LPUART control register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
0/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFTCFG
rw |
RXFTIE
rw |
RXFTCFG
rw |
TXFTIE
rw |
WUFIE
rw |
WUS
rw |
||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DEP
rw |
DEM
rw |
DDRE
rw |
OVRDIS
rw |
CTSIE
rw |
CTSE
rw |
RTSE
rw |
DMAT
rw |
DMAR
rw |
HDSEL
rw |
EIE
rw |
Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error or noise flag (FE=1 or ORE=1 or NE=1 in the LPUART_ISR register)..
Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the LPUART is disabled (UE=0)..
Bit 6: DMA enable receiver This bit is set/reset by software.
Bit 7: DMA enable transmitter This bit is set/reset by software.
Bit 8: RTS enable This bit can only be written when the LPUART is disabled (UE=0)..
Bit 9: CTS enable This bit can only be written when the LPUART is disabled (UE=0).
Bit 10: CTS interrupt enable.
Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the LPUART_RDR register. This bit can only be written when the LPUART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data..
Bit 13: DMA Disable on Reception Error This bit can only be written when the LPUART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..
Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the LPUART is disabled (UE=0)..
Bit 15: Driver enable polarity selection This bit can only be written when the LPUART is disabled (UE=0)..
Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the LPUART is disabled (UE=0). Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 22: Wakeup from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. If the LPUART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..
Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved..
Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..
Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved..
LPUART baud rate register
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
LPUART request register
Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified
0/4 fields covered.
Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: If the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software should wait for the TXE flag assertion before setting the SBKRQ bit..
Bit 2: Mute mode request Writing 1 to this bit puts the LPUART in Mute mode and resets the RWU flag..
Bit 3: Receive data flush request Writing 1 to this bit clears the RXNE flag. This enables discarding the received data without reading it, and avoid an overrun condition..
Bit 4: Transmit data flush request This bit is used when FIFO mode is enabled. TXFRQ bit is set to flush the whole FIFO. This sets the flag TXFE (TXFIFO empty, bit 23 in the LPUART_ISR register). Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..
LPUART interrupt and status register [alternate]
Offset: 0x1c, size: 32, reset: 0x008000C0, access: Unspecified
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
|||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTS
r |
CTSIF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the LPUART_ICR register. An interrupt is generated if PEIE = 1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the LPUART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..
Bit 2: Start bit noise detection flag This bit is set by hardware when noise is detected on the start bit of a received frame. It is cleared by software, writing 1 to the NECF bit in the LPUART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. This error is associated with the character in the LPUART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the LPUART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the LPUART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the LPUART_CR1 register. Note: When this bit is set, the LPUART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the LPUART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle line is detected. An interrupt is generated if IDLEIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the LPUART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the LPUART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, and so data can be read from the LPUART_RDR register. Every read of the LPUART_RDR frees a location in the RXFIFO. It is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. An interrupt is generated if RXFNEIE=1 in the LPUART_CR1 register..
Bit 6: Transmission complete This bit is set by hardware if the transmission of a frame containing data is complete and if TXFF is set. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the TCCF in the LPUART_ICR register or by a write to the LPUART_TDR register. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. Note: If TE bit is reset and no transmission is on going, the TC bit is set immediately..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full, and so data can be written in the LPUART_TDR. Every write in the LPUART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the LPUART_TDR. The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). An interrupt is generated if the TXFNFIE bit =1 in the LPUART_CR1 register. Note: This bit is used during single buffer transmission..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the LPUART_ICR register. An interrupt is generated if CTSIE=1 in the LPUART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the LPUART_ICR register. An interrupt is generated if CMIE=1in the LPUART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the LPUART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the LPUART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the LPUART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the LPUART_RQR register. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the LPUART_ICR register. An interrupt is generated if WUFIE=1 in the LPUART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value.
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the LPUART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the LPUART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the LPUART. It can be used to verify that the LPUART is ready for reception before entering low-power mode. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value..
LPUART interrupt and status register [alternate]
Offset: 0x1c, size: 32, reset: 0x008000C0, access: Unspecified
21/21 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFT
r |
RXFT
r |
RXFF
r |
TXFE
r |
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
|||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTS
r |
CTSIF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the LPUART_ICR register. An interrupt is generated if PEIE = 1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the LPUART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..
Bit 2: Start bit noise detection flag This bit is set by hardware when noise is detected on the start bit of a received frame. It is cleared by software, writing 1 to the NECF bit in the LPUART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. This error is associated with the character in the LPUART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the LPUART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the LPUART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the LPUART_CR1 register. Note: When this bit is set, the LPUART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the LPUART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle line is detected. An interrupt is generated if IDLEIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the LPUART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the LPUART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, and so data can be read from the LPUART_RDR register. Every read of the LPUART_RDR frees a location in the RXFIFO. It is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. An interrupt is generated if RXFNEIE=1 in the LPUART_CR1 register..
Bit 6: Transmission complete This bit is set by hardware if the transmission of a frame containing data is complete and if TXFF is set. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the TCCF in the LPUART_ICR register or by a write to the LPUART_TDR register. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. Note: If TE bit is reset and no transmission is on going, the TC bit is set immediately..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full, and so data can be written in the LPUART_TDR. Every write in the LPUART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the LPUART_TDR. The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). An interrupt is generated if the TXFNFIE bit =1 in the LPUART_CR1 register. Note: This bit is used during single buffer transmission..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the LPUART_ICR register. An interrupt is generated if CTSIE=1 in the LPUART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the LPUART_ICR register. An interrupt is generated if CMIE=1in the LPUART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the LPUART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the LPUART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the LPUART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the LPUART_RQR register. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the LPUART_ICR register. An interrupt is generated if WUFIE=1 in the LPUART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value.
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the LPUART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the LPUART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the LPUART. It can be used to verify that the LPUART is ready for reception before entering low-power mode. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value..
Bit 23: TXFIFO empty This bit is set by hardware when TXFIFO is empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the LPUART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the LPUART_CR1 register..
Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFOsize+1 (RXFIFO full + 1 data in the LPUART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the LPUART_CR1 register..
Bit 26: RXFIFO threshold flag This bit is set by hardware when the RXFIFO reaches the threshold programmed in RXFTCFG in LPUART_CR3 register i.e. the Receive FIFO contains RXFTCFG data. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the LPUART_CR3 register..
Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG in LPUART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the LPUART_CR3 register..
LPUART interrupt flag clear register
Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified
0/9 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WUCF
w |
CMCF
w |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTSCF
w |
TCCF
w |
IDLECF
w |
ORECF
w |
NECF
w |
FECF
w |
PECF
w |
Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the LPUART_ISR register..
Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the LPUART_ISR register..
Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the LPUART_ISR register..
Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the LPUART_ISR register..
Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the LPUART_ISR register..
Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the LPUART_ISR register..
Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the LPUART_ISR register..
Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the LPUART_ISR register..
Bit 20: Wakeup from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the LPUART_ISR register. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
LPUART receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RDR
r |
LPUART transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDR
rw |
Bits 0-8: Transmit data value Contains the data character to be transmitted. The TDR register provides the parallel interface between the internal bus and the output shift register (see ). When transmitting with the parity enabled (PCE bit set to 1 in the LPUART_CR1 register), the value written in the MSB (bit 7 or bit 8 depending on the data length) has no effect because it is replaced by the parity. Note: This register must be written only when TXE/TXFNF=1..
LPUART prescaler register
Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESCALER
rw |
0x40008400: Low-power universal asynchronous receiver transmitter
39/120 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1_disabled | ||||||||||||||||||||||||||||||||
0x0 | CR1_enabled | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | CR3 | ||||||||||||||||||||||||||||||||
0xc | BRR | ||||||||||||||||||||||||||||||||
0x18 | RQR | ||||||||||||||||||||||||||||||||
0x1c | ISR_disabled | ||||||||||||||||||||||||||||||||
0x1c | ISR_enabled | ||||||||||||||||||||||||||||||||
0x20 | ICR | ||||||||||||||||||||||||||||||||
0x24 | RDR | ||||||||||||||||||||||||||||||||
0x28 | TDR | ||||||||||||||||||||||||||||||||
0x2c | PRESC |
LPUART control register 1 [alternate]
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
0/19 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FIFOEN
rw |
M1
rw |
DEAT
rw |
DEDT
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXFNFIE
rw |
TCIE
rw |
RXFNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: LPUART enable When this bit is cleared, the LPUART prescalers and outputs are stopped immediately, and current operations are discarded. The configuration of the LPUART is kept, but all the status flags, in the LPUART_ISR are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be reset before and the software must wait for the TC bit in the LPUART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit..
Bit 1: LPUART enable in Stop mode When this bit is cleared, the LPUART is not able to wake up the MCU from low-power mode. When this bit is set, the LPUART is able to wake up the MCU from low-power mode, provided that the LPUART clock selection is HSI or LSE in the RCC. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it on exit from low-power mode..
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word. In order to generate an idle character, the TE must not be immediately written to 1. In order to ensure the required duration, the software can poll the TEACK bit in the LPUART_ISR register. When TE is set there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the LPUART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1) description). This bit can only be written when the LPUART is disabled (UE=0)..
Bit 13: Mute mode enable This bit activates the Mute mode function of the LPUART. When set, the LPUART can switch between the active and Mute modes, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal.It is expressed in lpuart_ker_ck clock cycles. For more details, refer control and RS485 Driver Enable. If the LPUART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in lpuart_ker_ck clock cycles. For more details, refer . This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 Start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 Start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 Start bit, 7 Data bits, n Stop bit This bit can only be written when the LPUART is disabled (UE=0). Note: In 7-bit data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software..
LPUART control register 1 [alternate]
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
0/21 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXFFIE
rw |
TXFEIE
rw |
FIFOEN
rw |
M1
rw |
DEAT
rw |
DEDT
rw |
||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXFNFIE
rw |
TCIE
rw |
RXFNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: LPUART enable When this bit is cleared, the LPUART prescalers and outputs are stopped immediately, and current operations are discarded. The configuration of the LPUART is kept, but all the status flags, in the LPUART_ISR are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be reset before and the software must wait for the TC bit in the LPUART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit..
Bit 1: LPUART enable in Stop mode When this bit is cleared, the LPUART is not able to wake up the MCU from low-power mode. When this bit is set, the LPUART is able to wake up the MCU from low-power mode, provided that the LPUART clock selection is HSI or LSE in the RCC. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it on exit from low-power mode..
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word. In order to generate an idle character, the TE must not be immediately written to 1. In order to ensure the required duration, the software can poll the TEACK bit in the LPUART_ISR register. When TE is set there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the LPUART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1) description). This bit can only be written when the LPUART is disabled (UE=0)..
Bit 13: Mute mode enable This bit activates the Mute mode function of the LPUART. When set, the LPUART can switch between the active and Mute modes, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal.It is expressed in lpuart_ker_ck clock cycles. For more details, refer control and RS485 Driver Enable. If the LPUART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in lpuart_ker_ck clock cycles. For more details, refer . This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 Start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 Start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 Start bit, 7 Data bits, n Stop bit This bit can only be written when the LPUART is disabled (UE=0). Note: In 7-bit data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software..
Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..
Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..
LPUART control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
0/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADD
rw |
MSBFIRST
rw |
DATAINV
rw |
TXINV
rw |
RXINV
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SWAP
rw |
STOP
rw |
ADDM7
rw |
Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the LPUART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..
Bits 12-13: STOP bits These bits are used for programming the stop bits. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the LPUART is disabled (UE=0)..
Bits 24-31: Address of the LPUART node ADD[7:4]: These bits give the address of the LPUART node or a character code to be recognized. They are used to wake up the MCU with 7-bit address mark detection in multiprocessor communication during Mute mode or Stop mode. The MSB of the character sent by the transmitter should be equal to 1. They can also be used for character detection during normal reception, Mute mode inactive (for example, end of block detection in ModBus protocol). In this case, the whole received character (8-bit) is compared to the ADD[7:0] value and CMF flag is set on match. These bits can only be written when reception is disabled (RE = 0) or the LPUART is disabled (UE=0) ADD[3:0]: These bits give the address of the LPUART node or a character code to be recognized. They are used for wakeup with address mark detection in multiprocessor communication during Mute mode or low-power mode. These bits can only be written when reception is disabled (RE = 0) or the LPUART is disabled (UE=0).
LPUART control register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
0/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFTCFG
rw |
RXFTIE
rw |
RXFTCFG
rw |
TXFTIE
rw |
WUFIE
rw |
WUS
rw |
||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DEP
rw |
DEM
rw |
DDRE
rw |
OVRDIS
rw |
CTSIE
rw |
CTSE
rw |
RTSE
rw |
DMAT
rw |
DMAR
rw |
HDSEL
rw |
EIE
rw |
Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error or noise flag (FE=1 or ORE=1 or NE=1 in the LPUART_ISR register)..
Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the LPUART is disabled (UE=0)..
Bit 6: DMA enable receiver This bit is set/reset by software.
Bit 7: DMA enable transmitter This bit is set/reset by software.
Bit 8: RTS enable This bit can only be written when the LPUART is disabled (UE=0)..
Bit 9: CTS enable This bit can only be written when the LPUART is disabled (UE=0).
Bit 10: CTS interrupt enable.
Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the LPUART_RDR register. This bit can only be written when the LPUART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data..
Bit 13: DMA Disable on Reception Error This bit can only be written when the LPUART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..
Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the LPUART is disabled (UE=0)..
Bit 15: Driver enable polarity selection This bit can only be written when the LPUART is disabled (UE=0)..
Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the LPUART is disabled (UE=0). Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 22: Wakeup from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. If the LPUART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..
Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved..
Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..
Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved..
LPUART baud rate register
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
LPUART request register
Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified
0/4 fields covered.
Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: If the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software should wait for the TXE flag assertion before setting the SBKRQ bit..
Bit 2: Mute mode request Writing 1 to this bit puts the LPUART in Mute mode and resets the RWU flag..
Bit 3: Receive data flush request Writing 1 to this bit clears the RXNE flag. This enables discarding the received data without reading it, and avoid an overrun condition..
Bit 4: Transmit data flush request This bit is used when FIFO mode is enabled. TXFRQ bit is set to flush the whole FIFO. This sets the flag TXFE (TXFIFO empty, bit 23 in the LPUART_ISR register). Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..
LPUART interrupt and status register [alternate]
Offset: 0x1c, size: 32, reset: 0x008000C0, access: Unspecified
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
|||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTS
r |
CTSIF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the LPUART_ICR register. An interrupt is generated if PEIE = 1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the LPUART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..
Bit 2: Start bit noise detection flag This bit is set by hardware when noise is detected on the start bit of a received frame. It is cleared by software, writing 1 to the NECF bit in the LPUART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. This error is associated with the character in the LPUART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the LPUART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the LPUART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the LPUART_CR1 register. Note: When this bit is set, the LPUART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the LPUART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle line is detected. An interrupt is generated if IDLEIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the LPUART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the LPUART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, and so data can be read from the LPUART_RDR register. Every read of the LPUART_RDR frees a location in the RXFIFO. It is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. An interrupt is generated if RXFNEIE=1 in the LPUART_CR1 register..
Bit 6: Transmission complete This bit is set by hardware if the transmission of a frame containing data is complete and if TXFF is set. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the TCCF in the LPUART_ICR register or by a write to the LPUART_TDR register. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. Note: If TE bit is reset and no transmission is on going, the TC bit is set immediately..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full, and so data can be written in the LPUART_TDR. Every write in the LPUART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the LPUART_TDR. The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). An interrupt is generated if the TXFNFIE bit =1 in the LPUART_CR1 register. Note: This bit is used during single buffer transmission..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the LPUART_ICR register. An interrupt is generated if CTSIE=1 in the LPUART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the LPUART_ICR register. An interrupt is generated if CMIE=1in the LPUART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the LPUART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the LPUART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the LPUART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the LPUART_RQR register. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the LPUART_ICR register. An interrupt is generated if WUFIE=1 in the LPUART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value.
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the LPUART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the LPUART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the LPUART. It can be used to verify that the LPUART is ready for reception before entering low-power mode. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value..
LPUART interrupt and status register [alternate]
Offset: 0x1c, size: 32, reset: 0x008000C0, access: Unspecified
21/21 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFT
r |
RXFT
r |
RXFF
r |
TXFE
r |
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
|||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTS
r |
CTSIF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the LPUART_ICR register. An interrupt is generated if PEIE = 1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the LPUART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the LPUART_CR1 register. Note: This error is associated with the character in the LPUART_RDR..
Bit 2: Start bit noise detection flag This bit is set by hardware when noise is detected on the start bit of a received frame. It is cleared by software, writing 1 to the NECF bit in the LPUART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. This error is associated with the character in the LPUART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the LPUART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the LPUART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the LPUART_CR1 register. Note: When this bit is set, the LPUART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the LPUART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle line is detected. An interrupt is generated if IDLEIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the LPUART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the LPUART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, and so data can be read from the LPUART_RDR register. Every read of the LPUART_RDR frees a location in the RXFIFO. It is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the LPUART_RQR register. An interrupt is generated if RXFNEIE=1 in the LPUART_CR1 register..
Bit 6: Transmission complete This bit is set by hardware if the transmission of a frame containing data is complete and if TXFF is set. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. It is cleared by software, writing 1 to the TCCF in the LPUART_ICR register or by a write to the LPUART_TDR register. An interrupt is generated if TCIE=1 in the LPUART_CR1 register. Note: If TE bit is reset and no transmission is on going, the TC bit is set immediately..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full, and so data can be written in the LPUART_TDR. Every write in the LPUART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the LPUART_TDR. The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). An interrupt is generated if the TXFNFIE bit =1 in the LPUART_CR1 register. Note: This bit is used during single buffer transmission..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the LPUART_ICR register. An interrupt is generated if CTSIE=1 in the LPUART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the LPUART_ICR register. An interrupt is generated if CMIE=1in the LPUART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the LPUART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the LPUART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the LPUART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the LPUART_RQR register. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the LPUART_ICR register. An interrupt is generated if WUFIE=1 in the LPUART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value.
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the LPUART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the LPUART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the LPUART. It can be used to verify that the LPUART is ready for reception before entering low-power mode. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value..
Bit 23: TXFIFO empty This bit is set by hardware when TXFIFO is empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the LPUART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the LPUART_CR1 register..
Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFOsize+1 (RXFIFO full + 1 data in the LPUART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the LPUART_CR1 register..
Bit 26: RXFIFO threshold flag This bit is set by hardware when the RXFIFO reaches the threshold programmed in RXFTCFG in LPUART_CR3 register i.e. the Receive FIFO contains RXFTCFG data. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the LPUART_CR3 register..
Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG in LPUART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the LPUART_CR3 register..
LPUART interrupt flag clear register
Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified
0/9 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WUCF
w |
CMCF
w |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTSCF
w |
TCCF
w |
IDLECF
w |
ORECF
w |
NECF
w |
FECF
w |
PECF
w |
Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the LPUART_ISR register..
Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the LPUART_ISR register..
Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the LPUART_ISR register..
Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the LPUART_ISR register..
Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the LPUART_ISR register..
Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the LPUART_ISR register..
Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the LPUART_ISR register..
Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the LPUART_ISR register..
Bit 20: Wakeup from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the LPUART_ISR register. Note: If the LPUART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
LPUART receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RDR
r |
LPUART transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDR
rw |
Bits 0-8: Transmit data value Contains the data character to be transmitted. The TDR register provides the parallel interface between the internal bus and the output shift register (see ). When transmitting with the parity enabled (PCE bit set to 1 in the LPUART_CR1 register), the value written in the MSB (bit 7 or bit 8 depending on the data length) has no effect because it is replaced by the parity. Note: This register must be written only when TXE/TXFNF=1..
LPUART prescaler register
Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESCALER
rw |
0x40007000: Power control
15/242 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | CR3 | ||||||||||||||||||||||||||||||||
0xc | CR4 | ||||||||||||||||||||||||||||||||
0x10 | SR1 | ||||||||||||||||||||||||||||||||
0x14 | SR2 | ||||||||||||||||||||||||||||||||
0x18 | SCR | ||||||||||||||||||||||||||||||||
0x20 | PUCRA | ||||||||||||||||||||||||||||||||
0x24 | PDCRA | ||||||||||||||||||||||||||||||||
0x28 | PUCRB | ||||||||||||||||||||||||||||||||
0x2c | PDCRB | ||||||||||||||||||||||||||||||||
0x30 | PUCRC | ||||||||||||||||||||||||||||||||
0x34 | PDCRC | ||||||||||||||||||||||||||||||||
0x38 | PUCRD | ||||||||||||||||||||||||||||||||
0x3c | PDCRD | ||||||||||||||||||||||||||||||||
0x40 | PUCRE | ||||||||||||||||||||||||||||||||
0x44 | PDCRE | ||||||||||||||||||||||||||||||||
0x48 | PUCRF | ||||||||||||||||||||||||||||||||
0x4c | PDCRF |
Power control register 1
Offset: 0x0, size: 32, reset: 0x00000208, access: read-write
0/7 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LPR
rw |
VOS
rw |
DBP
rw |
FPD_LPSLP
rw |
FPD_LPRUN
rw |
FPD_STOP
rw |
LPMS
rw |
Bits 0-2: Low-power mode selection.
Bit 3: Flash memory powered down during Stop mode.
Bit 4: Flash memory powered down during Low-power run mode.
Bit 5: Flash memory powered down during Low-power sleep mode.
Bit 8: Disable backup domain write protection.
Bits 9-10: Voltage scaling range selection.
Bit 14: Low-power run.
Power control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
Power control register 3
Offset: 0x8, size: 32, reset: 0x00008000, access: read-write
0/10 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EIWUL
rw |
APC
rw |
ENB_ULP
rw |
RRS
rw |
EWUP6
rw |
EWUP5
rw |
EWUP4
rw |
EWUP3
rw |
EWUP2
rw |
EWUP1
rw |
Bit 0: Enable Wakeup pin WKUP1.
Bit 1: Enable Wakeup pin WKUP2.
Bit 2: Enable Wakeup pin WKUP3.
Bit 3: Enable Wakeup pin WKUP4.
Bit 4: Enable WKUP5 wakeup pin.
Bit 5: Enable WKUP6 wakeup pin.
Bit 8: SRAM retention in Standby mode.
Bit 9: Ultra-low-power enable.
Bit 10: Apply pull-up and pull-down configuration.
Bit 15: Enable internal wakeup line.
Power control register 4
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/8 fields covered.
Bit 0: Wakeup pin WKUP1 polarity.
Bit 1: Wakeup pin WKUP2 polarity.
Bit 2: Wakeup pin WKUP3 polarity.
Bit 3: Wakeup pin WKUP4 polarity.
Bit 4: Wakeup pin WKUP5 polarity.
Bit 5: WKUP6 wakeup pin polarity.
Bit 8: VBAT battery charging enable.
Bit 9: VBAT battery charging resistor selection.
Power status register 1
Offset: 0x10, size: 32, reset: 0x00000000, access: read-only
8/8 fields covered.
Power status register 2
Offset: 0x14, size: 32, reset: 0x00000000, access: read-only
7/7 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PVMODAC
r |
PVMOUSB
r |
PVDO
r |
VOSF
r |
REGLPF
r |
REGLPS
r |
FLASH_RDY
r |
Bit 7: Flash ready flag.
Bit 8: Low-power regulator started.
Bit 9: Low-power regulator flag.
Bit 10: Voltage scaling flag.
Bit 11: Power voltage detector output.
Bit 12: USB supply voltage monitoring output flag.
Bit 15: VDDA monitoring output flag.
Power status clear register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
0/7 fields covered.
Power Port A pull-up control register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PU15
rw |
PU14
rw |
PU13
rw |
PU12
rw |
PU11
rw |
PU10
rw |
PU9
rw |
PU8
rw |
PU7
rw |
PU6
rw |
PU5
rw |
PU4
rw |
PU3
rw |
PU2
rw |
PU1
rw |
PU0
rw |
Bit 0: Port A pull-up bit y (y=0..15).
Bit 1: Port A pull-up bit y (y=0..15).
Bit 2: Port A pull-up bit y (y=0..15).
Bit 3: Port A pull-up bit y (y=0..15).
Bit 4: Port A pull-up bit y (y=0..15).
Bit 5: Port A pull-up bit y (y=0..15).
Bit 6: Port A pull-up bit y (y=0..15).
Bit 7: Port A pull-up bit y (y=0..15).
Bit 8: Port A pull-up bit y (y=0..15).
Bit 9: Port A pull-up bit y (y=0..15).
Bit 10: Port A pull-up bit y (y=0..15).
Bit 11: Port A pull-up bit y (y=0..15).
Bit 12: Port A pull-up bit y (y=0..15).
Bit 13: Port A pull-up bit y (y=0..15).
Bit 14: Port A pull-up bit y (y=0..15).
Bit 15: Port A pull-up bit y (y=0..15).
Power Port A pull-down control register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PD15
rw |
PD14
rw |
PD13
rw |
PD12
rw |
PD11
rw |
PD10
rw |
PD9
rw |
PD8
rw |
PD7
rw |
PD6
rw |
PD5
rw |
PD4
rw |
PD3
rw |
PD2
rw |
PD1
rw |
PD0
rw |
Bit 0: Port A pull-down bit y (y=0..15).
Bit 1: Port A pull-down bit y (y=0..15).
Bit 2: Port A pull-down bit y (y=0..15).
Bit 3: Port A pull-down bit y (y=0..15).
Bit 4: Port A pull-down bit y (y=0..15).
Bit 5: Port A pull-down bit y (y=0..15).
Bit 6: Port A pull-down bit y (y=0..15).
Bit 7: Port A pull-down bit y (y=0..15).
Bit 8: Port A pull-down bit y (y=0..15).
Bit 9: Port A pull-down bit y (y=0..15).
Bit 10: Port A pull-down bit y (y=0..15).
Bit 11: Port A pull-down bit y (y=0..15).
Bit 12: Port A pull-down bit y (y=0..15).
Bit 13: Port A pull-down bit y (y=0..15).
Bit 14: Port A pull-down bit y (y=0..15).
Bit 15: Port A pull-down bit y (y=0..15).
Power Port B pull-up control register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PU15
rw |
PU14
rw |
PU13
rw |
PU12
rw |
PU11
rw |
PU10
rw |
PU9
rw |
PU8
rw |
PU7
rw |
PU6
rw |
PU5
rw |
PU4
rw |
PU3
rw |
PU2
rw |
PU1
rw |
PU0
rw |
Bit 0: Port B pull-up bit y (y=0..15).
Bit 1: Port B pull-up bit y (y=0..15).
Bit 2: Port B pull-up bit y (y=0..15).
Bit 3: Port B pull-up bit y (y=0..15).
Bit 4: Port B pull-up bit y (y=0..15).
Bit 5: Port B pull-up bit y (y=0..15).
Bit 6: Port B pull-up bit y (y=0..15).
Bit 7: Port B pull-up bit y (y=0..15).
Bit 8: Port B pull-up bit y (y=0..15).
Bit 9: Port B pull-up bit y (y=0..15).
Bit 10: Port B pull-up bit y (y=0..15).
Bit 11: Port B pull-up bit y (y=0..15).
Bit 12: Port B pull-up bit y (y=0..15).
Bit 13: Port B pull-up bit y (y=0..15).
Bit 14: Port B pull-up bit y (y=0..15).
Bit 15: Port B pull-up bit y (y=0..15).
Power Port B pull-down control register
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PD15
rw |
PD14
rw |
PD13
rw |
PD12
rw |
PD11
rw |
PD10
rw |
PD9
rw |
PD8
rw |
PD7
rw |
PD6
rw |
PD5
rw |
PD4
rw |
PD3
rw |
PD2
rw |
PD1
rw |
PD0
rw |
Bit 0: Port B pull-down bit y (y=0..15).
Bit 1: Port B pull-down bit y (y=0..15).
Bit 2: Port B pull-down bit y (y=0..15).
Bit 3: Port B pull-down bit y (y=0..15).
Bit 4: Port B pull-down bit y (y=0..15).
Bit 5: Port B pull-down bit y (y=0..15).
Bit 6: Port B pull-down bit y (y=0..15).
Bit 7: Port B pull-down bit y (y=0..15).
Bit 8: Port B pull-down bit y (y=0..15).
Bit 9: Port B pull-down bit y (y=0..15).
Bit 10: Port B pull-down bit y (y=0..15).
Bit 11: Port B pull-down bit y (y=0..15).
Bit 12: Port B pull-down bit y (y=0..15).
Bit 13: Port B pull-down bit y (y=0..15).
Bit 14: Port B pull-down bit y (y=0..15).
Bit 15: Port B pull-down bit y (y=0..15).
Power Port C pull-up control register
Offset: 0x30, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PU15
rw |
PU14
rw |
PU13
rw |
PU12
rw |
PU11
rw |
PU10
rw |
PU9
rw |
PU8
rw |
PU7
rw |
PU6
rw |
PU5
rw |
PU4
rw |
PU3
rw |
PU2
rw |
PU1
rw |
PU0
rw |
Bit 0: Port C pull-up bit y (y=0..15).
Bit 1: Port C pull-up bit y (y=0..15).
Bit 2: Port C pull-up bit y (y=0..15).
Bit 3: Port C pull-up bit y (y=0..15).
Bit 4: Port C pull-up bit y (y=0..15).
Bit 5: Port C pull-up bit y (y=0..15).
Bit 6: Port C pull-up bit y (y=0..15).
Bit 7: Port C pull-up bit y (y=0..15).
Bit 8: Port C pull-up bit y (y=0..15).
Bit 9: Port C pull-up bit y (y=0..15).
Bit 10: Port C pull-up bit y (y=0..15).
Bit 11: Port C pull-up bit y (y=0..15).
Bit 12: Port C pull-up bit y (y=0..15).
Bit 13: Port C pull-up bit y (y=0..15).
Bit 14: Port C pull-up bit y (y=0..15).
Bit 15: Port C pull-up bit y (y=0..15).
Power Port C pull-down control register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PD15
rw |
PD14
rw |
PD13
rw |
PD12
rw |
PD11
rw |
PD10
rw |
PD9
rw |
PD8
rw |
PD7
rw |
PD6
rw |
PD5
rw |
PD4
rw |
PD3
rw |
PD2
rw |
PD1
rw |
PD0
rw |
Bit 0: Port C pull-down bit y (y=0..15).
Bit 1: Port C pull-down bit y (y=0..15).
Bit 2: Port C pull-down bit y (y=0..15).
Bit 3: Port C pull-down bit y (y=0..15).
Bit 4: Port C pull-down bit y (y=0..15).
Bit 5: Port C pull-down bit y (y=0..15).
Bit 6: Port C pull-down bit y (y=0..15).
Bit 7: Port C pull-down bit y (y=0..15).
Bit 8: Port C pull-down bit y (y=0..15).
Bit 9: Port C pull-down bit y (y=0..15).
Bit 10: Port C pull-down bit y (y=0..15).
Bit 11: Port C pull-down bit y (y=0..15).
Bit 12: Port C pull-down bit y (y=0..15).
Bit 13: Port C pull-down bit y (y=0..15).
Bit 14: Port C pull-down bit y (y=0..15).
Bit 15: Port C pull-down bit y (y=0..15).
Power Port D pull-up control register
Offset: 0x38, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PU15
rw |
PU14
rw |
PU13
rw |
PU12
rw |
PU11
rw |
PU10
rw |
PU9
rw |
PU8
rw |
PU7
rw |
PU6
rw |
PU5
rw |
PU4
rw |
PU3
rw |
PU2
rw |
PU1
rw |
PU0
rw |
Bit 0: Port D pull-up bit y (y=0..15).
Bit 1: Port D pull-up bit y (y=0..15).
Bit 2: Port D pull-up bit y (y=0..15).
Bit 3: Port D pull-up bit y (y=0..15).
Bit 4: Port D pull-up bit y (y=0..15).
Bit 5: Port D pull-up bit y (y=0..15).
Bit 6: Port D pull-up bit y (y=0..15).
Bit 7: Port D pull-up bit y (y=0..15).
Bit 8: Port D pull-up bit y (y=0..15).
Bit 9: Port D pull-up bit y (y=0..15).
Bit 10: Port D pull-up bit y (y=0..15).
Bit 11: Port D pull-up bit y (y=0..15).
Bit 12: Port D pull-up bit y (y=0..15).
Bit 13: Port D pull-up bit y (y=0..15).
Bit 14: Port D pull-up bit y (y=0..15).
Bit 15: Port D pull-up bit y (y=0..15).
Power Port D pull-down control register
Offset: 0x3c, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PD15
rw |
PD14
rw |
PD13
rw |
PD12
rw |
PD11
rw |
PD10
rw |
PD9
rw |
PD8
rw |
PD7
rw |
PD6
rw |
PD5
rw |
PD4
rw |
PD3
rw |
PD2
rw |
PD1
rw |
PD0
rw |
Bit 0: Port D pull-down bit y (y=0..15).
Bit 1: Port D pull-down bit y (y=0..15).
Bit 2: Port D pull-down bit y (y=0..15).
Bit 3: Port D pull-down bit y (y=0..15).
Bit 4: Port D pull-down bit y (y=0..15).
Bit 5: Port D pull-down bit y (y=0..15).
Bit 6: Port D pull-down bit y (y=0..15).
Bit 7: Port D pull-down bit y (y=0..15).
Bit 8: Port D pull-down bit y (y=0..15).
Bit 9: Port D pull-down bit y (y=0..15).
Bit 10: Port D pull-down bit y (y=0..15).
Bit 11: Port D pull-down bit y (y=0..15).
Bit 12: Port D pull-down bit y (y=0..15).
Bit 13: Port D pull-down bit y (y=0..15).
Bit 14: Port D pull-down bit y (y=0..15).
Bit 15: Port D pull-down bit y (y=0..15).
Power Port E pull-UP control register
Offset: 0x40, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PU15
rw |
PU14
rw |
PU13
rw |
PU12
rw |
PU11
rw |
PU10
rw |
PU9
rw |
PU8
rw |
PU7
rw |
PU6
rw |
PU5
rw |
PU4
rw |
PU3
rw |
PU2
rw |
PU1
rw |
PU0
rw |
Bit 0: Port E pull-up bit y (y=0..15).
Bit 1: Port E pull-up bit y (y=0..15).
Bit 2: Port E pull-up bit y (y=0..15).
Bit 3: Port E pull-up bit y (y=0..15).
Bit 4: Port E pull-up bit y (y=0..15).
Bit 5: Port E pull-up bit y (y=0..15).
Bit 6: Port E pull-up bit y (y=0..15).
Bit 7: Port E pull-up bit y (y=0..15).
Bit 8: Port E pull-up bit y (y=0..15).
Bit 9: Port E pull-up bit y (y=0..15).
Bit 10: Port E pull-up bit y (y=0..15).
Bit 11: Port E pull-up bit y (y=0..15).
Bit 12: Port E pull-up bit y (y=0..15).
Bit 13: Port E pull-up bit y (y=0..15).
Bit 14: Port E pull-up bit y (y=0..15).
Bit 15: Port E pull-up bit y (y=0..15).
Power Port E pull-down control register
Offset: 0x44, size: 32, reset: 0x00000000, access: read-write
0/16 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PD15
rw |
PD14
rw |
PD13
rw |
PD12
rw |
PD11
rw |
PD10
rw |
PD9
rw |
PD8
rw |
PD7
rw |
PD6
rw |
PD5
rw |
PD4
rw |
PD3
rw |
PD2
rw |
PD1
rw |
PD0
rw |
Bit 0: Port E pull-down bit y (y=0..15).
Bit 1: Port E pull-down bit y (y=0..15).
Bit 2: Port E pull-down bit y (y=0..15).
Bit 3: Port E pull-down bit y (y=0..15).
Bit 4: Port E pull-down bit y (y=0..15).
Bit 5: Port E pull-down bit y (y=0..15).
Bit 6: Port E pull-down bit y (y=0..15).
Bit 7: Port E pull-down bit y (y=0..15).
Bit 8: Port E pull-down bit y (y=0..15).
Bit 9: Port E pull-down bit y (y=0..15).
Bit 10: Port E pull-down bit y (y=0..15).
Bit 11: Port E pull-down bit y (y=0..15).
Bit 12: Port E pull-down bit y (y=0..15).
Bit 13: Port E pull-down bit y (y=0..15).
Bit 14: Port E pull-down bit y (y=0..15).
Bit 15: Port E pull-down bit y (y=0..15).
Power Port F pull-up control register
Offset: 0x48, size: 32, reset: 0x00000000, access: read-write
0/14 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PU13
rw |
PU12
rw |
PU11
rw |
PU10
rw |
PU9
rw |
PU8
rw |
PU7
rw |
PU6
rw |
PU5
rw |
PU4
rw |
PU3
rw |
PU2
rw |
PU1
rw |
PU0
rw |
Bit 0: Port F pull-up bit y (y=0..15).
Bit 1: Port F pull-up bit y (y=0..15).
Bit 2: Port F pull-up bit y (y=0..15).
Bit 3: Port F pull-up bit y (y=0..15).
Bit 4: Port F pull-up bit y (y=0..15).
Bit 5: Port F pull-up bit y (y=0..15).
Bit 6: Port F pull-up bit y (y=0..15).
Bit 7: Port F pull-up bit y (y=0..15).
Bit 8: Port F pull-up bit y (y=0..15).
Bit 9: Port F pull-up bit y (y=0..15).
Bit 10: Port F pull-up bit y (y=0..15).
Bit 11: Port F pull-up bit y (y=0..15).
Bit 12: Port F pull-up bit y (y=0..15).
Bit 13: Port F pull-up bit y (y=0..15).
Power Port F pull-down control register
Offset: 0x4c, size: 32, reset: 0x00000000, access: read-write
0/14 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PD13
rw |
PD12
rw |
PD11
rw |
PD10
rw |
PD9
rw |
PD8
rw |
PD7
rw |
PD6
rw |
PD5
rw |
PD4
rw |
PD3
rw |
PD2
rw |
PD1
rw |
PD0
rw |
Bit 0: Port F pull-down bit y (y=0..15).
Bit 1: Port F pull-down bit y (y=0..15).
Bit 2: Port F pull-down bit y (y=0..15).
Bit 3: Port F pull-down bit y (y=0..15).
Bit 4: Port F pull-down bit y (y=0..15).
Bit 5: Port F pull-down bit y (y=0..15).
Bit 6: Port F pull-down bit y (y=0..15).
Bit 7: Port F pull-down bit y (y=0..15).
Bit 8: Port F pull-down bit y (y=0..15).
Bit 9: Port F pull-down bit y (y=0..15).
Bit 10: Port F pull-down bit y (y=0..15).
Bit 11: Port F pull-down bit y (y=0..15).
Bit 12: Port F pull-down bit y (y=0..15).
Bit 13: Port F pull-down bit y (y=0..15).
0x40021000: Reset and clock control
245/245 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR | ||||||||||||||||||||||||||||||||
0x4 | ICSCR | ||||||||||||||||||||||||||||||||
0x8 | CFGR | ||||||||||||||||||||||||||||||||
0xc | PLLCFGR | ||||||||||||||||||||||||||||||||
0x14 | CRRCR | ||||||||||||||||||||||||||||||||
0x18 | CIER | ||||||||||||||||||||||||||||||||
0x1c | CIFR | ||||||||||||||||||||||||||||||||
0x20 | CICR | ||||||||||||||||||||||||||||||||
0x24 | IOPRSTR | ||||||||||||||||||||||||||||||||
0x28 | AHBRSTR | ||||||||||||||||||||||||||||||||
0x2c | APBRSTR1 | ||||||||||||||||||||||||||||||||
0x30 | APBRSTR2 | ||||||||||||||||||||||||||||||||
0x34 | IOPENR | ||||||||||||||||||||||||||||||||
0x38 | AHBENR | ||||||||||||||||||||||||||||||||
0x3c | APBENR1 | ||||||||||||||||||||||||||||||||
0x40 | APBENR2 | ||||||||||||||||||||||||||||||||
0x44 | IOPSMENR | ||||||||||||||||||||||||||||||||
0x48 | AHBSMENR | ||||||||||||||||||||||||||||||||
0x4c | APBSMENR1 | ||||||||||||||||||||||||||||||||
0x50 | APBSMENR2 | ||||||||||||||||||||||||||||||||
0x54 | CCIPR | ||||||||||||||||||||||||||||||||
0x58 | CCIPR2 | ||||||||||||||||||||||||||||||||
0x5c | BDCR | ||||||||||||||||||||||||||||||||
0x60 | CSR |
Clock control register
Offset: 0x0, size: 32, reset: 0x00000500, access: read-write
12/12 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PLLRDY
r |
PLLON
rw |
HSI48RDY
r |
HSI48ON
rw |
CSSON
rw |
HSEBYP
rw |
HSERDY
rw |
HSEON
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
HSIDIV
rw |
HSIRDY
r |
HSIKERON
rw |
HSION
rw |
Bit 8: HSI16 clock enable.
Allowed values:
0: Disabled: HSI oscillator powered off
1: Enabled: HSI oscillator enabled
Bit 9: HSI16 always enable for peripheral kernels.
Allowed values:
0: NotForce: No effect on HSI16 oscillator
1: Forced: HSI16 oscillator forced on even in Stop modes
Bit 10: HSI16 clock ready flag.
Allowed values:
0: NotReady: HSI oscillator not ready
1: Ready: HSI oscillator ready
Bits 11-13: HSI16 clock division factor.
Allowed values:
0: Div1: Divide HSI16 by 1
1: Div2: Divide HSI16 by 2
2: Div4: Divide HSI16 by 4
3: Div8: Divide HSI16 by 8
4: Div16: Divide HSI16 by 16
5: Div32: Divide HSI16 by 32
6: Div64: Divide HSI16 by 64
7: Div128: Divide HSI16 by 128
Bit 16: HSE clock enable.
Allowed values:
0: Disabled: HSE oscillator powered off
1: Enabled: HSE oscillator enabled
Bit 17: HSE clock ready flag.
Allowed values:
0: NotReady: HSE oscillator not ready
1: Ready: HSE oscillator ready
Bit 18: HSE crystal oscillator bypass.
Allowed values:
0: Crystal: HSE is a crystal oscillator or ceramic resonator
1: ExtClock: HSE is driven by an external clock
Bit 19: Clock security system enable.
Allowed values:
0: Disabled: HSE clock is not monitored
1: Enabled: HSE clock monitor enabled when HSE is ready, otherwise disabled
Bit 22: HSI48ON.
Allowed values:
0: Disabled: HSI48 oscillator powered off
1: Enabled: HSI48 oscillator enabled
Bit 23: HSI48RDY.
Allowed values:
0: NotReady: HSI48 oscillator not ready
1: Ready: HSI48 oscillator ready
Bit 24: PLL enable.
Allowed values:
0: Disabled: PLL powered off
1: Enabled: PLL enabled
Bit 25: PLL clock ready flag.
Allowed values:
0: Unlocked: PLL unlocked
1: Locked: PLL locked
Internal clock sources calibration register
Offset: 0x4, size: 32, reset: 0x00004000, access: Unspecified
2/2 fields covered.
Clock configuration register
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
8/8 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MCOPRE
rw |
MCOSEL
rw |
MCO2PRE
rw |
MCO2SEL
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PPRE
rw |
HPRE
rw |
SWS
r |
SW
rw |
Bits 0-2: System clock switch.
Allowed values:
0: HSISYS: HSISYS clock selected
1: HSE: HSE clock selected
2: PLLR: PLLRCLK clock selected
3: LSI: LSI clock selected
4: LSE: LSE clock selected
Bits 3-5: System clock switch status.
Allowed values:
0: HSISYS: HSISYS clock selected
1: HSE: HSE clock selected
2: PLLR: PLLRCLK clock selected
3: LSI: LSI clock selected
4: LSE: LSE clock selected
Bits 8-11: AHB prescaler.
Allowed values:
8: Div2: Divide by 2
9: Div4: Divide by 4
10: Div8: Divide by 8
11: Div16: Divide by 16
12: Div64: Divide by 64
13: Div128: Divide by 128
14: Div256: Divide by 256
15: Div512: Divide by 512
0 (+): Div1: Divide by 1
Bits 12-14: APB prescaler.
Allowed values:
4: Div2: Divide by 2
5: Div4: Divide by 4
6: Div8: Divide by 8
7: Div16: Divide by 16
0 (+): Div1: Divide by 1
Bits 16-19: MCO2SEL.
Allowed values:
0: NoClock: No clock
1: SYSCLK: SYSCLK clock selected
3: HSI16: HSI16 oscillator clock selected
4: HSE: HSE oscillator clock selected
5: PLLR: PLLRCLK clock selected
6: LSI: LSI oscillator clock selected
7: LSE: LSE oscillator clock selected
8: PLLP: PLLPCLK clock selected
9: PLLQ: PLLQCLK clock selected
10: RTC: RTC clock selected
11: RTCWake: RTC wakeup output selected
Bits 20-23: MCO2PRE.
Allowed values:
0: Div1: Divide by 1
1: Div2: Divide by 2
2: Div3: Divide by 4
3: Div8: Divide by 8
4: Div16: Divide by 16
5: Div32: Divide by 32
6: Div64: Divide by 64
7: Div128: Divide by 128
8: Div256: Divide by 256
9: Div512: Divide by 512
10: Div1024: Divide by 1024
Bits 24-27: Microcontroller clock output.
Allowed values:
0: NoClock: No clock
1: SYSCLK: SYSCLK clock selected
3: HSI16: HSI16 oscillator clock selected
4: HSE: HSE oscillator clock selected
5: PLLR: PLLRCLK clock selected
6: LSI: LSI oscillator clock selected
7: LSE: LSE oscillator clock selected
8: PLLP: PLLPCLK clock selected
9: PLLQ: PLLQCLK clock selected
10: RTC: RTC clock selected
11: RTCWake: RTC wakeup output selected
Bits 28-31: Microcontroller clock output prescaler.
Allowed values:
0: Div1: Divide by 1
1: Div2: Divide by 2
2: Div3: Divide by 4
3: Div8: Divide by 8
4: Div16: Divide by 16
5: Div32: Divide by 32
6: Div64: Divide by 64
7: Div128: Divide by 128
8: Div256: Divide by 256
9: Div512: Divide by 512
10: Div1024: Divide by 1024
PLL configuration register
Offset: 0xc, size: 32, reset: 0x00001000, access: read-write
9/9 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PLLR
rw |
PLLREN
rw |
PLLQ
rw |
PLLQEN
rw |
PLLP
rw |
PLLPEN
rw |
||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
PLLN
rw |
PLLM
rw |
PLLSRC
rw |
Bits 0-1: PLL input clock source.
Allowed values:
0: NoClock: No clock selected (saves power)
2: HSI16: HSI16 clock selected
3: HSE: HSE clock selected
Bits 4-6: Division factor M of the PLL input clock divider.
Allowed values: 0x0-0x7
Bits 8-15: PLL frequency multiplication factor N.
Allowed values: 0x8-0x56
Bit 16: PLLPCLK clock output enable.
Allowed values:
0: Disabled: PLL output disabled (saves power)
1: Enabled: PLL output enabled
Bits 17-21: PLL VCO division factor P for PLLPCLK clock output.
Allowed values: 0x1-0x1f
Bit 24: PLLQCLK clock output enable.
Allowed values:
0: Disabled: PLL output disabled (saves power)
1: Enabled: PLL output enabled
Bits 25-27: PLL VCO division factor Q for PLLQCLK clock output.
Allowed values: 0x1-0x7
Bit 28: PLLRCLK clock output enable.
Allowed values:
0: Disabled: PLL output disabled (saves power)
1: Enabled: PLL output enabled
Bits 29-31: PLL VCO division factor R for PLLRCLK clock output.
Allowed values: 0x1-0x7
RCC clock recovery RC register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
HSI48CAL
r |
Clock interrupt enable register
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
5/5 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PLLSYSRDYIE
rw |
HSERDYIE
rw |
HSIRDYIE
rw |
LSERDYIE
rw |
LSIRDYIE
rw |
Bit 0: LSI ready interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 1: LSE ready interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 3: HSI ready interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 4: HSE ready interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 5: PLL ready interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Clock interrupt flag register
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-only
8/8 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LSECSSF
r |
CSSF
r |
PLLSYSRDYF
r |
HSERDYF
r |
HSIRDYF
r |
HSI48RDYF
r |
LSERDYF
r |
LSIRDYF
r |
Bit 0: LSI ready interrupt flag.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: LSE ready interrupt flag.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: HSI48RDYF.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 3: HSI ready interrupt flag.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 4: HSE ready interrupt flag.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 5: PLL ready interrupt flag.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 8: Clock security system interrupt flag.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 9: LSE Clock security system interrupt flag.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Clock interrupt clear register
Offset: 0x20, size: 32, reset: 0x00000000, access: write-only
8/8 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LSECSSC
w |
CSSC
w |
PLLSYSRDYC
w |
HSERDYC
w |
HSIRDYC
w |
HSI48RDYC
w |
LSERDYC
w |
LSIRDYC
w |
Bit 0: LSI ready interrupt clear.
Allowed values:
1: Clear: Clear interrupt flag
Bit 1: LSE ready interrupt clear.
Allowed values:
1: Clear: Clear interrupt flag
Bit 2: HSI48RDYC.
Allowed values:
1: Clear: Clear interrupt flag
Bit 3: HSI ready interrupt clear.
Allowed values:
1: Clear: Clear interrupt flag
Bit 4: HSE ready interrupt clear.
Allowed values:
1: Clear: Clear interrupt flag
Bit 5: PLL ready interrupt clear.
Allowed values:
1: Clear: Clear interrupt flag
Bit 8: Clock security system interrupt clear.
Allowed values:
1: Clear: Clear interrupt flag
Bit 9: LSE Clock security system interrupt clear.
Allowed values:
1: Clear: Clear interrupt flag
I/O port reset register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
6/6 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GPIOFRST
rw |
GPIOERST
rw |
GPIODRST
rw |
GPIOCRST
rw |
GPIOBRST
rw |
GPIOARST
rw |
Bit 0: GPIOARST.
Allowed values:
1: Reset: Reset peripheral
Bit 1: GPIOBRST.
Allowed values:
1: Reset: Reset peripheral
Bit 2: GPIOCRST.
Allowed values:
1: Reset: Reset peripheral
Bit 3: GPIODRST.
Allowed values:
1: Reset: Reset peripheral
Bit 4: GPIOERST.
Allowed values:
1: Reset: Reset peripheral
Bit 5: GPIOFRST.
Allowed values:
1: Reset: Reset peripheral
AHB peripheral reset register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
6/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RNGRST
rw |
AESRST
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CRCRST
rw |
FLASHRST
rw |
DMA2RST
rw |
DMA1RST
rw |
Bit 0: DMA1 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 1: DMA1 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 8: FLITF reset.
Allowed values:
1: Reset: Reset peripheral
Bit 12: CRC reset.
Allowed values:
1: Reset: Reset peripheral
Bit 16: AES hardware accelerator reset.
Allowed values:
1: Reset: Reset peripheral
Bit 18: Random number generator reset.
Allowed values:
1: Reset: Reset peripheral
APB peripheral reset register 1
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
28/28 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LPTIM1RST
rw |
LPTIM2RST
rw |
DAC1RST
rw |
PWRRST
rw |
DBGRST
rw |
UCPD2RST
rw |
UCPD1RST
rw |
CECRST
rw |
I2C3RST
rw |
I2C2RST
rw |
I2C1RST
rw |
LPUART1RST
rw |
USART4RST
rw |
USART3RST
rw |
USART2RST
rw |
CRSRST
rw |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SPI3RST
rw |
SPI2RST
rw |
USBRST
rw |
FDCANRST
rw |
USART6RST
rw |
USART5RST
rw |
LPUART2RST
rw |
TIM7RST
rw |
TIM6RST
rw |
TIM4RST
rw |
TIM3RST
rw |
TIM2RST
rw |
Bit 0: TIM2 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 1: TIM3 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 2: TIM4 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 4: TIM6 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 5: TIM7 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 7: LPUART2RST.
Allowed values:
1: Reset: Reset peripheral
Bit 8: USART5RST.
Allowed values:
1: Reset: Reset peripheral
Bit 9: USART6RST.
Allowed values:
1: Reset: Reset peripheral
Bit 12: FDCANRST.
Allowed values:
1: Reset: Reset peripheral
Bit 13: USBRST.
Allowed values:
1: Reset: Reset peripheral
Bit 14: SPI2 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 15: SPI3 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 16: CRSRST.
Allowed values:
1: Reset: Reset peripheral
Bit 17: USART2 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 18: USART3 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 19: USART4 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 20: LPUART1 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 21: I2C1 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 22: I2C2 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 23: I2C3RST reset.
Allowed values:
1: Reset: Reset peripheral
Bit 24: HDMI CEC reset.
Allowed values:
1: Reset: Reset peripheral
Bit 25: UCPD1 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 26: UCPD2 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 27: Debug support reset.
Allowed values:
1: Reset: Reset peripheral
Bit 28: Power interface reset.
Allowed values:
1: Reset: Reset peripheral
Bit 29: DAC1 interface reset.
Allowed values:
1: Reset: Reset peripheral
Bit 30: Low Power Timer 2 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 31: Low Power Timer 1 reset.
Allowed values:
1: Reset: Reset peripheral
APB peripheral reset register 2
Offset: 0x30, size: 32, reset: 0x00000000, access: read-write
9/9 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADCRST
rw |
TIM17RST
rw |
TIM16RST
rw |
TIM15RST
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TIM14RST
rw |
USART1RST
rw |
SPI1RST
rw |
TIM1RST
rw |
SYSCFGRST
rw |
Bit 0: SYSCFG, COMP and VREFBUF reset.
Allowed values:
1: Reset: Reset peripheral
Bit 11: TIM1 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 12: SPI1 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 14: USART1 reset.
Allowed values:
1: Reset: Reset peripheral
Bit 15: TIM14 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 16: TIM15 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 17: TIM16 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 18: TIM17 timer reset.
Allowed values:
1: Reset: Reset peripheral
Bit 20: ADC reset.
Allowed values:
1: Reset: Reset peripheral
GPIO clock enable register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
6/6 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GPIOFEN
rw |
GPIOEEN
rw |
GPIODEN
rw |
GPIOCEN
rw |
GPIOBEN
rw |
GPIOAEN
rw |
Bit 0: I/O port A clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 1: I/O port B clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 2: I/O port C clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 3: I/O port D clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 4: I/O port E clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 5: I/O port F clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
AHB peripheral clock enable register
Offset: 0x38, size: 32, reset: 0x00000100, access: read-write
6/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RNGEN
rw |
AESEN
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CRCEN
rw |
FLASHEN
rw |
DMA2EN
rw |
DMA1EN
rw |
Bit 0: DMA1 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 1: DMA2 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 8: Flash memory interface clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 12: CRC clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 16: AES hardware accelerator.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 18: Random number generator clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
APB peripheral clock enable register 1
Offset: 0x3c, size: 32, reset: 0x00000000, access: read-write
30/30 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LPTIM1EN
rw |
LPTIM2EN
rw |
DAC1EN
rw |
PWREN
rw |
DBGEN
rw |
UCPD2EN
rw |
UCPD1EN
rw |
CECEN
rw |
I2C3EN
rw |
I2C2EN
rw |
I2C1EN
rw |
LPUART1EN
rw |
USART4EN
rw |
USART3EN
rw |
USART2EN
rw |
CRSEN
rw |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SPI3EN
rw |
SPI2EN
rw |
USBEN
rw |
FDCANEN
rw |
WWDGEN
rw |
RTCAPBEN
rw |
USART6EN
rw |
USART5EN
rw |
LPUART2EN
rw |
TIM7EN
rw |
TIM6EN
rw |
TIM4EN
rw |
TIM3EN
rw |
TIM2EN
rw |
Bit 0: TIM2 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 1: TIM3 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 2: TIM4 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 4: TIM6 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 5: TIM7 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 7: LPUART2 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 8: USART5EN.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 9: USART6EN.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 10: RTC APB clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 11: WWDG clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 12: USBEN.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 13: USBEN.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 14: SPI2 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 15: SPI3 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 16: CRSEN.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 17: USART2 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 18: USART3 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 19: USART4 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 20: LPUART1 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 21: I2C1 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 22: I2C2 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 23: I2C3 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 24: HDMI CEC clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 25: UCPD1 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 26: UCPD2 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 27: Debug support clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 28: Power interface clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 29: DAC1 interface clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 30: LPTIM2 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 31: LPTIM1 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
APB peripheral clock enable register 2
Offset: 0x40, size: 32, reset: 0x00000000, access: read-write
9/9 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADCEN
rw |
TIM17EN
rw |
TIM16EN
rw |
TIM15EN
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TIM14EN
rw |
USART1EN
rw |
SPI1EN
rw |
TIM1EN
rw |
SYSCFGEN
rw |
Bit 0: SYSCFG, COMP and VREFBUF clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 11: TIM1 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 12: SPI1 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 14: USART1 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 15: TIM14 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 16: TIM15 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 17: TIM16 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 18: TIM16 timer clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 20: ADC clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
GPIO in Sleep mode clock enable register
Offset: 0x44, size: 32, reset: 0x0000003F, access: read-write
6/6 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GPIOFSMEN
rw |
GPIOESMEN
rw |
GPIODSMEN
rw |
GPIOCSMEN
rw |
GPIOBSMEN
rw |
GPIOASMEN
rw |
Bit 0: I/O port A clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 1: I/O port B clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 2: I/O port C clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 3: I/O port D clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 4: I/O port E clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 5: I/O port F clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
AHB peripheral clock enable in Sleep mode register
Offset: 0x48, size: 32, reset: 0x00051303, access: read-write
7/7 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RNGSMEN
rw |
AESSMEN
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CRCSMEN
rw |
SRAMSMEN
rw |
FLASHSMEN
rw |
DMA2SMEN
rw |
DMA1SMEN
rw |
Bit 0: DMA1 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 1: DMA2 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 8: Flash memory interface clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 9: SRAM clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 12: CRC clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 16: AES hardware accelerator clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 18: Random number generator clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
APB peripheral clock enable in Sleep mode register 1
Offset: 0x4c, size: 32, reset: 0xFFFFFFB7, access: read-write
30/30 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LPTIM1SMEN
rw |
LPTIM2SMEN
rw |
DAC1SMEN
rw |
PWRSMEN
rw |
DBGSMEN
rw |
UCPD2SMEN
rw |
UCPD1SMEN
rw |
CECSMEN
rw |
I2C3SMEN
rw |
I2C2SMEN
rw |
I2C1SMEN
rw |
LPUART1SMEN
rw |
USART4SMEN
rw |
USART3SMEN
rw |
USART2SMEN
rw |
CRSSSMEN
rw |
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SPI3SMEN
rw |
SPI2SMEN
rw |
USBSMEN
rw |
FDCANSMEN
rw |
WWDGSMEN
rw |
RTCAPBSMEN
rw |
USART6SMEN
rw |
USART5SMEN
rw |
LPUART2SMEN
rw |
TIM7SMEN
rw |
TIM6SMEN
rw |
TIM4SMEN
rw |
TIM3SMEN
rw |
TIM2SMEN
rw |
Bit 0: TIM2 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 1: TIM3 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 2: TIM4 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 4: TIM6 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 5: TIM7 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 7: LPUART2 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 8: USART5 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 9: USART6 clock enable.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 10: RTC APB clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 11: WWDG clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 12: FDCAN clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 13: USB clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 14: SPI2 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 15: SPI3 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 16: CRSS clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 17: USART2 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 18: USART3 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 19: USART4 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 20: LPUART1 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 21: I2C1 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 22: I2C2 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 23: I2C3 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 24: HDMI CEC clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 25: UCPD1 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 26: UCPD2 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 27: Debug support clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 28: Power interface clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 29: DAC1 interface clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 30: Low Power Timer 2 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 31: Low Power Timer 1 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
APB peripheral clock enable in Sleep mode register 2
Offset: 0x50, size: 32, reset: 0x0017D801, access: read-write
9/9 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADCSMEN
rw |
TIM17SMEN
rw |
TIM16SMEN
rw |
TIM15SMEN
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TIM14SMEN
rw |
USART1SMEN
rw |
SPI1SMEN
rw |
TIM1SMEN
rw |
SYSCFGSMEN
rw |
Bit 0: SYSCFG, COMP and VREFBUF clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 11: TIM1 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 12: SPI1 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 14: USART1 clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 15: TIM14 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 16: TIM15 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 17: TIM16 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 18: TIM16 timer clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Bit 20: ADC clock enable during Sleep mode.
Allowed values:
0: Disabled: Peripheral disabled (typically saves power)
1: Enabled: Peripheral enabled
Peripherals independent clock configuration register
Offset: 0x54, size: 32, reset: 0x00000000, access: read-write
15/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADCSEL
rw |
RNGDIV
rw |
RNGSEL
rw |
TIM15SEL
rw |
TIM1SEL
rw |
LPTIM2SEL
rw |
LPTIM1SEL
rw |
|||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
I2C2SEL
rw |
I2C1SEL
rw |
LPUART1SEL
rw |
LPUART2SEL
rw |
CECSEL
rw |
USART3SEL
rw |
USART2SEL
rw |
USART1SEL
rw |
Bits 0-1: USART1 clock source selection.
Allowed values:
0: PCLK: PCLK clock selected
1: SYSCLK: SYSCLK clock selected
2: HSI16: HSI16 clock selected
3: LSE: LSE clock selected
Bits 2-3: USART2 clock source selection.
Allowed values:
0: PCLK: PCLK clock selected
1: SYSCLK: SYSCLK clock selected
2: HSI16: HSI16 clock selected
3: LSE: LSE clock selected
Bits 4-5: USART3 clock source selection.
Allowed values:
0: PCLK: PCLK clock selected
1: SYSCLK: SYSCLK clock selected
2: HSI16: HSI16 clock selected
3: LSE: LSE clock selected
Bit 6: HDMI CEC clock source selection.
Allowed values:
0: HSI16: HSI16 clock divided by 488 selected
1: LSE: LSE clock selected
Bits 8-9: LPUART2 clock source selection.
Allowed values:
0: PCLK: PCLK clock selected
1: SYSCLK: SYSCLK clock selected
2: HSI16: HSI16 clock selected
3: LSE: LSE clock selected
Bits 10-11: LPUART1 clock source selection.
Allowed values:
0: PCLK: PCLK clock selected
1: SYSCLK: SYSCLK clock selected
2: HSI16: HSI16 clock selected
3: LSE: LSE clock selected
Bits 12-13: I2C1 clock source selection.
Allowed values:
0: PCLK: PCLK clock selected
1: SYSCLK: SYSCLK clock selected
2: HSI16: HSI16 clock selected
Bits 14-15: I2S1 clock source selection.
Allowed values:
0: PCLK: PCLK clock selected
1: SYSCLK: SYSCLK clock selected
2: HSI16: HSI16 clock selected
Bits 18-19: LPTIM1 clock source selection.
Allowed values:
0: PCLK: PCLK clock selected
1: LSI: LSI clock selected
2: HSI16: HSI16 clock selected
3: LSE: LSE clock selected
Bits 20-21: LPTIM2 clock source selection.
Allowed values:
0: PCLK: PCLK clock selected
1: LSI: LSI clock selected
2: HSI16: HSI16 clock selected
3: LSE: LSE clock selected
Bit 22: TIM1 clock source selection.
Allowed values:
0: TIMP: TIMPCLK clock selected
1: PLLQ: PLLQCLK clock selected
Bit 24: TIM15 clock source selection.
Allowed values:
0: TIMP: TIMPCLK clock selected
1: PLLQ: PLLQCLK clock selected
Bits 26-27: RNG clock source selection.
Allowed values:
0: NoClock: No clock selected
1: HSI16: HSI16 clock selected
2: SYSCLK: SYSCLK clock selected
3: PLLQ: PLLQCLK clock selected
Bits 28-29: Division factor of RNG clock divider.
Allowed values:
0: Div1: Divide by 1
1: Div2: Divide by 2
2: Div4: Divide by 4
3: Div8: Divide by 8
Bits 30-31: ADCs clock source selection.
Allowed values:
0: SYSCLK: System clock selected
1: PLLP: PLLPCLK clock selected
2: HSI16: HSI16 clock selected
Peripherals independent clock configuration register 2
Offset: 0x58, size: 32, reset: 0x00000000, access: read-write
4/4 fields covered.
Bits 0-1: 2S1SEL.
Allowed values:
0: SYSCLK: SYSCLK clock selected
1: PLLP: PLLPCLK clock selected
2: HSI16: HSI16 clock selected
3: CKIN: I2S_CKIN clock selected
Bits 2-3: I2S2SEL.
Allowed values:
0: SYSCLK: SYSCLK clock selected
1: PLLP: PLLPCLK clock selected
2: HSI16: HSI16 clock selected
3: CKIN: I2S_CKIN clock selected
Bits 8-9: FDCANSEL.
Allowed values:
0: PCLK: PCLK clock selected
1: PLLQ: PLLQCLK clock selected
2: HSE: HSE clock selected
Bits 12-13: USBSEL.
Allowed values:
1: PLLQ: PLLQCLK clock selected
2: HSE: HSE clock selected
RTC domain control register
Offset: 0x5c, size: 32, reset: 0x00000000, access: read-write
11/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LSCOSEL
rw |
LSCOEN
rw |
BDRST
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RTCEN
rw |
RTCSEL
rw |
LSECSSD
r |
LSECSSON
rw |
LSEDRV
rw |
LSEBYP
rw |
LSERDY
r |
LSEON
rw |
Bit 0: LSE oscillator enable.
Allowed values:
0: Disabled: LSE oscillator powered off
1: Enabled: LSE oscillator enabled
Bit 1: LSE oscillator ready.
Allowed values:
0: NotReady: LSE oscillator not ready
1: Ready: LSE oscillator ready
Bit 2: LSE oscillator bypass.
Allowed values:
0: Crystal: LSE is a crystal oscillator or ceramic resonator
1: ExtClock: LSE is driven by an external clock
Bits 3-4: LSE oscillator drive capability.
Allowed values:
0: Low: Xtal mode lower driving capability
1: MedLow: Xtal mode medium-low driving capability
2: MedHigh: Xtal mode medium-high driving capability
3: High: Xtal mode higher driving capability
Bit 5: CSS on LSE enable.
Allowed values:
0: Disabled: LSE clock is not monitored
1: Enabled: LSE clock monitor enabled
Bit 6: CSS on LSE failure Detection.
Allowed values:
0: NoFailure: No failure detected
1: Failure: Failure detected
Bits 8-9: RTC clock source selection.
Allowed values:
0: NoClock: No clock selected
1: LSE: LSE clock selected
2: LSI: LSI clock selected
3: HSE32: HSI clock divided by 32 selected
Bit 15: RTC clock enable.
Allowed values:
0: Disabled: RTC disabled (saves power)
1: Enabled: RTC enabled
Bit 16: RTC domain software reset.
Allowed values:
1: Reset: RTC domain software reset
Bit 24: Low-speed clock output (LSCO) enable.
Allowed values:
0: Disabled: Low-speed clock output disabled
1: Enabled: Low-speed clock output enabled
Bit 25: Low-speed clock output selection.
Allowed values:
0: LSI: LSI clock selected
1: LSE: LSE clock selected
Control/status register
Offset: 0x60, size: 32, reset: 0x00000000, access: read-write
10/10 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LPWRRSTF
r |
WWDGRSTF
r |
IWDGRSTF
r |
SFTRSTF
r |
PWRRSTF
r |
PINRSTF
r |
OBLRSTF
r |
RMVF
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
LSIRDY
r |
LSION
rw |
Bit 0: LSI oscillator enable.
Allowed values:
0: Disabled: LSI oscillator powered off
1: Enabled: LSI oscillator enabled
Bit 1: LSI oscillator ready.
Allowed values:
0: NotReady: LSI oscillator not ready
1: Ready: LSI oscillator ready
Bit 23: Remove reset flags.
Allowed values:
1: Clear: Clear reset flags
Bit 25: Option byte loader reset flag.
Allowed values:
0: NoReset: This reset type has not occurred
1: Reset: This reset type has occurred
Bit 26: Pin reset flag.
Allowed values:
0: NoReset: This reset type has not occurred
1: Reset: This reset type has occurred
Bit 27: BOR or POR/PDR flag.
Allowed values:
0: NoReset: This reset type has not occurred
1: Reset: This reset type has occurred
Bit 28: Software reset flag.
Allowed values:
0: NoReset: This reset type has not occurred
1: Reset: This reset type has occurred
Bit 29: Independent window watchdog reset flag.
Allowed values:
0: NoReset: This reset type has not occurred
1: Reset: This reset type has occurred
Bit 30: Window watchdog reset flag.
Allowed values:
0: NoReset: This reset type has not occurred
1: Reset: This reset type has occurred
Bit 31: Low-power reset flag.
Allowed values:
0: NoReset: This reset type has not occurred
1: Reset: This reset type has occurred
0x40025000: Random number generator
4/9 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR | ||||||||||||||||||||||||||||||||
0x4 | SR | ||||||||||||||||||||||||||||||||
0x8 | DR |
control register
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
0/3 fields covered.
status register
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
3/5 fields covered.
Bit 0: Data Ready Once the output buffer becomes empty (after reading the RNG_DR register), this bit returns to 0 until a new random value is generated. Note: The DRDY bit can rise when the peripheral is disabled (RNGEN=0 in the RNG_CR register). If IE=1 in the RNG_CR register, an interrupt is generated when DRDY=1..
Bit 1: Clock error current status Note: CECS bit is valid only if the CED bit in the RNG_CR register is set to 0..
Bit 2: Seed error current status One of the noise source has provided more than 64 consecutive bits at a constant value ('0' or '1'), or more than 32 consecutive occurrence of two bit patterns ('01' or '10') Both noise sources have delivered more than 32 consecutive bits at a constant value ('0' or '1'), or more than 16 consecutive occurrence of two bit patterns ('01' or '10').
Bit 5: Clock error interrupt status This bit is set at the same time as CECS. It is cleared by writing 0. Writing 1 has no effect. An interrupt is pending if IE = 1 in the RNG_CR register..
Bit 6: Seed error interrupt status This bit is set at the same time as SECS. It is cleared by writing 0. Writing 1 has no effect. An interrupt is pending if IE = 1 in the RNG_CR register..
0x40002800: Real-time clock
21/125 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | TR | ||||||||||||||||||||||||||||||||
0x4 | DR | ||||||||||||||||||||||||||||||||
0x8 | SSR | ||||||||||||||||||||||||||||||||
0xc | ICSR | ||||||||||||||||||||||||||||||||
0x10 | PRER | ||||||||||||||||||||||||||||||||
0x14 | WUTR | ||||||||||||||||||||||||||||||||
0x18 | CR | ||||||||||||||||||||||||||||||||
0x24 | WPR | ||||||||||||||||||||||||||||||||
0x28 | CALR | ||||||||||||||||||||||||||||||||
0x2c | SHIFTR | ||||||||||||||||||||||||||||||||
0x30 | TSTR | ||||||||||||||||||||||||||||||||
0x34 | TSDR | ||||||||||||||||||||||||||||||||
0x38 | TSSSR | ||||||||||||||||||||||||||||||||
0x40 | ALRM[A]R | ||||||||||||||||||||||||||||||||
0x44 | ALRM[A]SSR | ||||||||||||||||||||||||||||||||
0x48 | ALRM[B]R | ||||||||||||||||||||||||||||||||
0x4c | ALRM[B]SSR | ||||||||||||||||||||||||||||||||
0x50 | SR | ||||||||||||||||||||||||||||||||
0x54 | MISR | ||||||||||||||||||||||||||||||||
0x5c | SCR |
RTC time register
Offset: 0x0, size: 32, reset: 0x00000007, access: Unspecified
0/7 fields covered.
RTC date register
Offset: 0x4, size: 32, reset: 0x00002101, access: Unspecified
0/7 fields covered.
RTC sub second register
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SS
r |
Bits 0-15: Sub second value SS[15:0] is the value in the synchronous prescaler counter. The fraction of a second is given by the formula below: Second fraction = (PREDIV_S - SS) / (PREDIV_S + 1) Note: SS can be larger than PREDIV_S only after a shift operation. In that case, the correct time/date is one second less than as indicated by RTC_TR/RTC_DR..
RTC initialization control and status register
Offset: 0xc, size: 32, reset: 0x00000007, access: Unspecified
7/9 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RECALPF
r |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
INIT
rw |
INITF
r |
RSF
rw |
INITS
r |
SHPF
r |
WUTWF
r |
ALRBWF
r |
ALRAWF
r |
Bit 0: Alarm A write flag This bit is set by hardware when alarm A values can be changed, after the ALRAE bit has been set to 0 in RTC_CR. It is cleared by hardware in initialization mode..
Bit 1: Alarm B write flag This bit is set by hardware when alarm B values can be changed, after the ALRBE bit has been set to 0 in RTC_CR. It is cleared by hardware in initialization mode..
Bit 2: Wakeup timer write flag This bit is set by hardware when WUT value can be changed, after the WUTE bit has been set to 0 in RTC_CR. It is cleared by hardware in initialization mode..
Bit 3: Shift operation pending This flag is set by hardware as soon as a shift operation is initiated by a write to the RTC_SHIFTR register. It is cleared by hardware when the corresponding shift operation has been executed. Writing to the SHPF bit has no effect..
Bit 4: Initialization status flag This bit is set by hardware when the calendar year field is different from 0 (RTC domain reset state)..
Bit 5: Registers synchronization flag This bit is set by hardware each time the calendar registers are copied into the shadow registers (RTC_SSRx, RTC_TRx and RTC_DRx). This bit is cleared by hardware in initialization mode, while a shift operation is pending (SHPF = 1), or when in bypass shadow register mode (BYPSHAD = 1). This bit can also be cleared by software. It is cleared either by software or by hardware in initialization mode..
Bit 6: Initialization flag When this bit is set to 1, the RTC is in initialization state, and the time, date and prescaler registers can be updated..
Bit 7: Initialization mode.
Bit 16: Recalibration pending Flag The RECALPF status flag is automatically set to 1 when software writes to the RTC_CALR register, indicating that the RTC_CALR register is blocked. When the new calibration settings are taken into account, this bit returns to 0. Refer to ..
RTC prescaler register
Offset: 0x10, size: 32, reset: 0x007F00FF, access: Unspecified
0/2 fields covered.
RTC wakeup timer register
Offset: 0x14, size: 32, reset: 0x0000FFFF, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WUT
rw |
Bits 0-15: Wakeup auto-reload value bits When the wakeup timer is enabled (WUTE set to 1), the WUTF flag is set every (WUT[15:0]+1) ck_wut cycles. The ck_wut period is selected through WUCKSEL[2:0] bits of the RTC_CR register. When WUCKSEL[2] = 1, the wakeup timer becomes 17-bits and WUCKSEL[1] effectively becomes WUT[16] the most-significant bit to be reloaded into the timer. The first assertion of WUTF occurs between WUT and (WUT + 1) ck_wut cycles after WUTE is set. Setting WUT[15:0] to 0x0000 with WUCKSEL[2:0] = 011 (RTCCLK/2) is forbidden..
RTC control register
Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified
0/26 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OUT2EN
rw |
TAMPALRM_TYPE
rw |
TAMPALRM_PU
rw |
TAMPOE
rw |
TAMPTS
rw |
ITSE
rw |
COE
rw |
OSEL
rw |
POL
rw |
COSEL
rw |
BKP
rw |
SUB1H
w |
ADD1H
w |
|||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TSIE
rw |
WUTIE
rw |
ALRBIE
rw |
ALRAIE
rw |
TSE
rw |
WUTE
rw |
ALRBE
rw |
ALRAE
rw |
FMT
rw |
BYPSHAD
rw |
REFCKON
rw |
TSEDGE
rw |
WUCKSEL
rw |
Bits 0-2: ck_wut wakeup clock selection 10x: ck_spre (usually 1Hz) clock is selected 11x: ck_spre (usually 1Hz) clock is selected and 216is added to the WUT counter value.
Bit 3: Timestamp event active edge TSE must be reset when TSEDGE is changed to avoid unwanted TSF setting..
Bit 4: RTC_REFIN reference clock detection enable (50 or 60Hz) Note: PREDIV_S must be 0x00FF..
Bit 5: Bypass the shadow registers Note: If the frequency of the APB1 clock is less than seven times the frequency of RTCCLK, BYPSHAD must be set to 1..
Bit 6: Hour format.
Bit 8: Alarm A enable.
Bit 9: Alarm B enable.
Bit 10: Wakeup timer enable Note: When the wakeup timer is disabled, wait for WUTWF=1 before enabling it again..
Bit 11: timestamp enable.
Bit 12: Alarm A interrupt enable.
Bit 13: Alarm B interrupt enable.
Bit 14: Wakeup timer interrupt enable.
Bit 15: Timestamp interrupt enable.
Bit 16: Add 1 hour (summer time change) When this bit is set outside initialization mode, 1 hour is added to the calendar time. This bit is always read as 0..
Bit 17: Subtract 1 hour (winter time change) When this bit is set outside initialization mode, 1 hour is subtracted to the calendar time if the current hour is not 0. This bit is always read as 0. Setting this bit has no effect when current hour is 0..
Bit 18: Backup This bit can be written by the user to memorize whether the daylight saving time change has been performed or not..
Bit 19: Calibration output selection When COE = 1, this bit selects which signal is output on CALIB. These frequencies are valid for RTCCLK at 32.768kHz and prescalers at their default values (PREDIV_A = 127 and PREDIV_S = 255). Refer to ..
Bit 20: Output polarity This bit is used to configure the polarity of TAMPALRM output..
Bits 21-22: Output selection These bits are used to select the flag to be routed to TAMPALRM output..
Bit 23: Calibration output enable This bit enables the CALIB output.
Bit 24: timestamp on internal event enable.
Bit 25: Activate timestamp on tamper detection event TAMPTS is valid even if TSE = 0 in the RTC_CR register. Timestamp flag is set after the tamper flags, therefore if TAMPTS and TSIE are set, it is recommended to disable the tamper interrupts in order to avoid servicing 2 interrupts..
Bit 26: Tamper detection output enable on TAMPALRM.
Bit 29: TAMPALRM pull-up enable.
Bit 30: TAMPALRM output type.
Bit 31: RTC_OUT2 output enable Setting this bit allows to remap the RTC outputs on RTC_OUT2 as follows: OUT2EN = 0: RTC output 2 disable If OSEL different 00 or TAMPOE = 1: TAMPALRM is output on RTC_OUT1 If OSEL = 00 and TAMPOE = 0 and COE = 1: CALIB is output on RTC_OUT1 OUT2EN = 1: RTC output 2 enable If (OSEL different 00 or TAMPOE = 1) and COE = 0: TAMPALRM is output on RTC_OUT2 If OSEL = 00 and TAMPOE = 0 and COE = 1: CALIB is output on RTC_OUT2 If (OSEL different 00 or TAMPOE = 1) and COE = 1: CALIB is output on RTC_OUT2 and TAMPALRM is output on RTC_OUT1..
RTC write protection register
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
KEY
w |
RTC calibration register
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
0/4 fields covered.
Bits 0-8: Calibration minus The frequency of the calendar is reduced by masking CALM out of 220 RTCCLK pulses (32 seconds if the input frequency is 32768Hz). This decreases the frequency of the calendar with a resolution of 0.9537ppm. To increase the frequency of the calendar, this feature should be used in conjunction with CALP. See ..
Bit 13: Use a 16-second calibration cycle period When CALW16 is set to 1, the 16-second calibration cycle period is selected. This bit must not be set to 1 if CALW8 = 1. Note: CALM[0] is stuck at 0 when CALW16 = 1. Refer to calibration..
Bit 14: Use an 8-second calibration cycle period When CALW8 is set to 1, the 8-second calibration cycle period is selected. Note: CALM[1:0] are stuck at 00 when CALW8 = 1. Refer to digital calibration..
Bit 15: Increase frequency of RTC by 488.5ppm This feature is intended to be used in conjunction with CALM, which lowers the frequency of the calendar with a fine resolution. if the input frequency is 32768Hz, the number of RTCCLK pulses added during a 32-second window is calculated as follows: (512 * CALP) - CALM. Refer to ..
RTC shift control register
Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADD1S
w |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SUBFS
w |
Bits 0-14: Subtract a fraction of a second These bits are write only and is always read as zero. Writing to this bit has no effect when a shift operation is pending (when SHPF = 1, in RTC_ICSR). The value which is written to SUBFS is added to the synchronous prescaler counter. Since this counter counts down, this operation effectively subtracts from (delays) the clock by: Delay (seconds) = SUBFS / (PREDIV_S + 1) A fraction of a second can effectively be added to the clock (advancing the clock) when the ADD1S function is used in conjunction with SUBFS, effectively advancing the clock by: Advance (seconds) = (1 - (SUBFS / (PREDIV_S + 1))). Note: Writing to SUBFS causes RSF to be cleared. Software can then wait until RSF = 1 to be sure that the shadow registers have been updated with the shifted time..
Bit 31: Add one second This bit is write only and is always read as zero. Writing to this bit has no effect when a shift operation is pending (when SHPF = 1, in RTC_ICSR). This function is intended to be used with SUBFS (see description below) in order to effectively add a fraction of a second to the clock in an atomic operation..
RTC timestamp time register
Offset: 0x30, size: 32, reset: 0x00000007, access: Unspecified
0/7 fields covered.
RTC timestamp date register
Offset: 0x34, size: 32, reset: 0x00002101, access: Unspecified
0/7 fields covered.
RTC timestamp sub second register
Offset: 0x38, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SS
r |
Bits 0-15: Sub second value SS[15:0] is the value in the synchronous prescaler counter. The fraction of a second is given by the formula below: Second fraction = (PREDIV_S - SS) / (PREDIV_S + 1) Note: SS can be larger than PREDIV_S only after a shift operation. In that case, the correct time/date is one second less than as indicated by RTC_TR/RTC_DR..
Alarm A register
Offset: 0x40, size: 32, reset: 0x00000000, access: Unspecified
0/14 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MSK4
rw |
WDSEL
rw |
DT
rw |
DU
rw |
MSK3
rw |
PM
rw |
HT
rw |
HU
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MSK2
rw |
MNT
rw |
MNU
rw |
MSK1
rw |
ST
rw |
SU
rw |
Bits 0-3: Second units in BCD format.
Bits 4-6: Second tens in BCD format.
Bit 7: Alarm seconds mask.
Bits 8-11: Minute units in BCD format.
Bits 12-14: Minute tens in BCD format.
Bit 15: Alarm minutes mask.
Bits 16-19: Hour units in BCD format.
Bits 20-21: Hour tens in BCD format.
Bit 22: AM/PM notation.
Bit 23: Alarm hours mask.
Bits 24-27: Date units or day in BCD format.
Bits 28-29: Date tens in BCD format.
Bit 30: Week day selection.
Bit 31: Alarm date mask.
Alarm A sub-second register
Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MASKSS
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SS
rw |
Bits 0-14: Sub seconds value This value is compared with the contents of the synchronous prescaler counter to determine if alarm A is to be activated. Only bits 0 up MASKSS-1 are compared..
Bits 24-27: Mask the most-significant bits starting at this bit 2: SS[14:2] are don't care in alarm A comparison. Only SS[1:0] are compared. 3: SS[14:3] are don't care in alarm A comparison. Only SS[2:0] are compared. ... 12: SS[14:12] are don't care in alarm A comparison. SS[11:0] are compared. 13: SS[14:13] are don't care in alarm A comparison. SS[12:0] are compared. 14: SS[14] is don't care in alarm A comparison. SS[13:0] are compared. 15: All 15 SS bits are compared and must match to activate alarm. The overflow bits of the synchronous counter (bits 15) is never compared. This bit can be different from 0 only after a shift operation. Note: The overflow bits of the synchronous counter (bits 15) is never compared. This bit can be different from 0 only after a shift operation..
Alarm B register
Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified
0/14 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MSK4
rw |
WDSEL
rw |
DT
rw |
DU
rw |
MSK3
rw |
PM
rw |
HT
rw |
HU
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MSK2
rw |
MNT
rw |
MNU
rw |
MSK1
rw |
ST
rw |
SU
rw |
Bits 0-3: Second units in BCD format.
Bits 4-6: Second tens in BCD format.
Bit 7: Alarm seconds mask.
Bits 8-11: Minute units in BCD format.
Bits 12-14: Minute tens in BCD format.
Bit 15: Alarm minutes mask.
Bits 16-19: Hour units in BCD format.
Bits 20-21: Hour tens in BCD format.
Bit 22: AM/PM notation.
Bit 23: Alarm hours mask.
Bits 24-27: Date units or day in BCD format.
Bits 28-29: Date tens in BCD format.
Bit 30: Week day selection.
Bit 31: Alarm date mask.
Alarm B sub-second register
Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MASKSS
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SS
rw |
Bits 0-14: Sub seconds value This value is compared with the contents of the synchronous prescaler counter to determine if alarm A is to be activated. Only bits 0 up MASKSS-1 are compared..
Bits 24-27: Mask the most-significant bits starting at this bit 2: SS[14:2] are don't care in alarm A comparison. Only SS[1:0] are compared. 3: SS[14:3] are don't care in alarm A comparison. Only SS[2:0] are compared. ... 12: SS[14:12] are don't care in alarm A comparison. SS[11:0] are compared. 13: SS[14:13] are don't care in alarm A comparison. SS[12:0] are compared. 14: SS[14] is don't care in alarm A comparison. SS[13:0] are compared. 15: All 15 SS bits are compared and must match to activate alarm. The overflow bits of the synchronous counter (bits 15) is never compared. This bit can be different from 0 only after a shift operation. Note: The overflow bits of the synchronous counter (bits 15) is never compared. This bit can be different from 0 only after a shift operation..
RTC status register
Offset: 0x50, size: 32, reset: 0x00000000, access: Unspecified
6/6 fields covered.
Bit 0: Alarm A flag This flag is set by hardware when the time/date registers (RTC_TR and RTC_DR) match the alarm A register (RTC_ALRMAR)..
Bit 1: Alarm B flag This flag is set by hardware when the time/date registers (RTC_TR and RTC_DR) match the alarm B register (RTC_ALRMBR)..
Bit 2: Wakeup timer flag This flag is set by hardware when the wakeup auto-reload counter reaches 0. This flag must be cleared by software at least 1.5 RTCCLK periods before WUTF is set to 1 again..
Bit 3: Timestamp flag This flag is set by hardware when a timestamp event occurs. If ITSF flag is set, TSF must be cleared together with ITSF..
Bit 4: Timestamp overflow flag This flag is set by hardware when a timestamp event occurs while TSF is already set. It is recommended to check and then clear TSOVF only after clearing the TSF bit. Otherwise, an overflow might not be noticed if a timestamp event occurs immediately before the TSF bit is cleared..
Bit 5: Internal timestamp flag This flag is set by hardware when a timestamp on the internal event occurs..
RTC masked interrupt status register
Offset: 0x54, size: 32, reset: 0x00000000, access: Unspecified
6/6 fields covered.
Bit 0: Alarm A masked flag This flag is set by hardware when the alarm A interrupt occurs..
Bit 1: Alarm B masked flag This flag is set by hardware when the alarm B interrupt occurs..
Bit 2: Wakeup timer masked flag This flag is set by hardware when the wakeup timer interrupt occurs. This flag must be cleared by software at least 1.5 RTCCLK periods before WUTF is set to 1 again..
Bit 3: Timestamp masked flag This flag is set by hardware when a timestamp interrupt occurs. If ITSF flag is set, TSF must be cleared together with ITSF..
Bit 4: Timestamp overflow masked flag This flag is set by hardware when a timestamp interrupt occurs while TSMF is already set. It is recommended to check and then clear TSOVF only after clearing the TSF bit. Otherwise, an overflow might not be noticed if a timestamp event occurs immediately before the TSF bit is cleared..
Bit 5: Internal timestamp masked flag This flag is set by hardware when a timestamp on the internal event occurs and timestampinterrupt is raised..
RTC status clear register
Offset: 0x5c, size: 32, reset: 0x00000000, access: Unspecified
0/6 fields covered.
Bit 0: Clear alarm A flag Writing 1 in this bit clears the ALRBF bit in the RTC_SR register..
Bit 1: Clear alarm B flag Writing 1 in this bit clears the ALRBF bit in the RTC_SR register..
Bit 2: Clear wakeup timer flag Writing 1 in this bit clears the WUTF bit in the RTC_SR register..
Bit 3: Clear timestamp flag Writing 1 in this bit clears the TSOVF bit in the RTC_SR register. If ITSF flag is set, TSF must be cleared together with ITSF by setting CRSF and CITSF..
Bit 4: Clear timestamp overflow flag Writing 1 in this bit clears the TSOVF bit in the RTC_SR register. It is recommended to check and then clear TSOVF only after clearing the TSF bit. Otherwise, an overflow might not be noticed if a timestamp event occurs immediately before the TSF bit is cleared..
Bit 5: Clear internal timestamp flag Writing 1 in this bit clears the ITSF bit in the RTC_SR register..
0x40013000: Serial peripheral interface
54/54 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 (16-bit) | CR1 | ||||||||||||||||||||||||||||||||
0x4 (16-bit) | CR2 | ||||||||||||||||||||||||||||||||
0x8 (16-bit) | SR | ||||||||||||||||||||||||||||||||
0xc (16-bit) | DR | ||||||||||||||||||||||||||||||||
0xc (8-bit) | DR8 | ||||||||||||||||||||||||||||||||
0x10 (16-bit) | CRCPR | ||||||||||||||||||||||||||||||||
0x14 (16-bit) | RXCRCR | ||||||||||||||||||||||||||||||||
0x18 (16-bit) | TXCRCR | ||||||||||||||||||||||||||||||||
0x1c (16-bit) | I2SCFGR | ||||||||||||||||||||||||||||||||
0x20 (16-bit) | I2SPR |
SPI control register 1
Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified
14/14 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BIDIMODE
rw |
BIDIOE
rw |
CRCEN
rw |
CRCNEXT
rw |
CRCL
rw |
RXONLY
rw |
SSM
rw |
SSI
rw |
LSBFIRST
rw |
SPE
rw |
BR
rw |
MSTR
rw |
CPOL
rw |
CPHA
rw |
Bit 0: Clock phase Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode and SPI TI mode except the case when CRC is applied at TI mode..
Allowed values:
0: FirstEdge: The first clock transition is the first data capture edge
1: SecondEdge: The second clock transition is the first data capture edge
Bit 1: Clock polarity Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode and SPI TI mode except the case when CRC is applied at TI mode..
Allowed values:
0: IdleLow: CK to 0 when idle
1: IdleHigh: CK to 1 when idle
Bit 2: Master selection Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode..
Allowed values:
0: Slave: Slave configuration
1: Master: Master configuration
Bits 3-5: Baud rate control Note: These bits should not be changed when communication is ongoing. These bits are not used in I2S mode..
Allowed values:
0: Div2: f_PCLK / 2
1: Div4: f_PCLK / 4
2: Div8: f_PCLK / 8
3: Div16: f_PCLK / 16
4: Div32: f_PCLK / 32
5: Div64: f_PCLK / 64
6: Div128: f_PCLK / 128
7: Div256: f_PCLK / 256
Bit 6: SPI enable Note: When disabling the SPI, follow the procedure described in SPI on page1021. This bit is not used in I2S mode..
Allowed values:
0: Disabled: Peripheral disabled
1: Enabled: Peripheral enabled
Bit 7: Frame format Note: 1. This bit should not be changed when communication is ongoing. 2. This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: MSBFirst: Data is transmitted/received with the MSB first
1: LSBFirst: Data is transmitted/received with the LSB first
Bit 8: Internal slave select This bit has an effect only when the SSM bit is set. The value of this bit is forced onto the NSS pin and the I/O value of the NSS pin is ignored. Note: This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: SlaveSelected: 0 is forced onto the NSS pin and the I/O value of the NSS pin is ignored
1: SlaveNotSelected: 1 is forced onto the NSS pin and the I/O value of the NSS pin is ignored
Bit 9: Software slave management When the SSM bit is set, the NSS pin input is replaced with the value from the SSI bit. Note: This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: Disabled: Software slave management disabled
1: Enabled: Software slave management enabled
Bit 10: Receive only mode enabled. This bit enables simplex communication using a single unidirectional line to receive data exclusively. Keep BIDIMODE bit clear when receive only mode is active.This bit is also useful in a multislave system in which this particular slave is not accessed, the output from the accessed slave is not corrupted. Note: This bit is not used in I2S mode..
Allowed values:
0: FullDuplex: Full duplex (Transmit and receive)
1: OutputDisabled: Output disabled (Receive-only mode)
Bit 11: CRC length This bit is set and cleared by software to select the CRC length. Note: This bit should be written only when SPI is disabled (SPE = '0') for correct operation. This bit is not used in I2S mode..
Allowed values:
0: EightBit: 8-bit CRC length
1: SixteenBit: 16-bit CRC length
Bit 12: Transmit CRC next Note: This bit has to be written as soon as the last data is written in the SPI_DR register. This bit is not used in I2S mode..
Allowed values:
0: TxBuffer: Next transmit value is from Tx buffer
1: CRC: Next transmit value is from Tx CRC register
Bit 13: Hardware CRC calculation enable Note: This bit should be written only when SPI is disabled (SPE = '0') for correct operation. This bit is not used in I2S mode..
Allowed values:
0: Disabled: CRC calculation disabled
1: Enabled: CRC calculation enabled
Bit 14: Output enable in bidirectional mode This bit combined with the BIDIMODE bit selects the direction of transfer in bidirectional mode. Note: In master mode, the MOSI pin is used and in slave mode, the MISO pin is used. This bit is not used in I2S mode..
Allowed values:
0: OutputDisabled: Output disabled (receive-only mode)
1: OutputEnabled: Output enabled (transmit-only mode)
Bit 15: Bidirectional data mode enable. This bit enables half-duplex communication using common single bidirectional data line. Keep RXONLY bit clear when bidirectional mode is active. Note: This bit is not used in I2S mode..
Allowed values:
0: Unidirectional: 2-line unidirectional data mode selected
1: Bidirectional: 1-line bidirectional data mode selected
SPI control register 2
Offset: 0x4, size: 16, reset: 0x00000700, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LDMA_TX
rw |
LDMA_RX
rw |
FRXTH
rw |
DS
rw |
TXEIE
rw |
RXNEIE
rw |
ERRIE
rw |
FRF
rw |
NSSP
rw |
SSOE
rw |
TXDMAEN
rw |
RXDMAEN
rw |
Bit 0: Rx buffer DMA enable When this bit is set, a DMA request is generated whenever the RXNE flag is set..
Allowed values:
0: Disabled: Rx buffer DMA disabled
1: Enabled: Rx buffer DMA enabled
Bit 1: Tx buffer DMA enable When this bit is set, a DMA request is generated whenever the TXE flag is set..
Allowed values:
0: Disabled: Tx buffer DMA disabled
1: Enabled: Tx buffer DMA enabled
Bit 2: SS output enable Note: This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: Disabled: SS output is disabled in master mode
1: Enabled: SS output is enabled in master mode
Bit 3: NSS pulse management This bit is used in master mode only. it allows the SPI to generate an NSS pulse between two consecutive data when doing continuous transfers. In the case of a single data transfer, it forces the NSS pin high level after the transfer. It has no meaning if CPHA = '1', or FRF = '1'. Note: 1. This bit must be written only when the SPI is disabled (SPE=0). 2. This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: NoPulse: No NSS pulse
1: PulseGenerated: NSS pulse generated
Bit 4: Frame format 1 SPI TI mode Note: This bit must be written only when the SPI is disabled (SPE=0). This bit is not used in I2S mode..
Allowed values:
0: Motorola: SPI Motorola mode
1: TI: SPI TI mode
Bit 5: Error interrupt enable This bit controls the generation of an interrupt when an error condition occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode and UDR, OVR, and FRE in I2S mode)..
Allowed values:
0: Masked: Error interrupt masked
1: NotMasked: Error interrupt not masked
Bit 6: RX buffer not empty interrupt enable.
Allowed values:
0: Masked: RXE interrupt masked
1: NotMasked: RXE interrupt not masked
Bit 7: Tx buffer empty interrupt enable.
Allowed values:
0: Masked: TXE interrupt masked
1: NotMasked: TXE interrupt not masked
Bits 8-11: Data size These bits configure the data length for SPI transfers. If software attempts to write one of the 'Not used' values, they are forced to the value '0111' (8-bit) Note: These bits are not used in I2S mode..
Allowed values:
3: FourBit: 4-bit
4: FiveBit: 5-bit
5: SixBit: 6-bit
6: SevenBit: 7-bit
7: EightBit: 8-bit
8: NineBit: 9-bit
9: TenBit: 10-bit
10: ElevenBit: 11-bit
11: TwelveBit: 12-bit
12: ThirteenBit: 13-bit
13: FourteenBit: 14-bit
14: FifteenBit: 15-bit
15: SixteenBit: 16-bit
Bit 12: FIFO reception threshold This bit is used to set the threshold of the RXFIFO that triggers an RXNE event Note: This bit is not used in I2S mode..
Allowed values:
0: Half: RXNE event is generated if the FIFO level is greater than or equal to 1/2 (16-bit)
1: Quarter: RXNE event is generated if the FIFO level is greater than or equal to 1/4 (8-bit)
Bit 13: Last DMA transfer for reception.
Allowed values:
0: Even: Number of data to transfer for receive is even
1: Odd: Number of data to transfer for receive is odd
Bit 14: Last DMA transfer for transmission.
Allowed values:
0: Even: Number of data to transfer for transmit is even
1: Odd: Number of data to transfer for transmit is odd
SPI status register
Offset: 0x8, size: 16, reset: 0x00000002, access: Unspecified
11/11 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FTLVL
r |
FRLVL
r |
FRE
r |
BSY
r |
OVR
r |
MODF
r |
CRCERR
rw |
UDR
r |
CHSIDE
r |
TXE
r |
RXNE
r |
Bit 0: Receive buffer not empty.
Allowed values:
0: Empty: Rx buffer empty
1: NotEmpty: Rx buffer not empty
Bit 1: Transmit buffer empty.
Allowed values:
0: NotEmpty: Tx buffer not empty
1: Empty: Tx buffer empty
Bit 2: Channel side Note: This bit is not used in SPI mode. It has no significance in PCM mode..
Bit 3: Underrun flag This flag is set by hardware and reset by a software sequence. Refer to page1057 for the software sequence. Note: This bit is not used in SPI mode..
Bit 4: CRC error flag Note: This flag is set by hardware and cleared by software writing 0. This bit is not used in I2S mode..
Allowed values:
0: Match: CRC value received matches the SPIx_RXCRCR value
1: NoMatch: CRC value received does not match the SPIx_RXCRCR value
Bit 5: Mode fault This flag is set by hardware and reset by a software sequence. Refer to (MODF) on page1031 for the software sequence. Note: This bit is not used in I2S mode..
Allowed values:
0: NoFault: No mode fault occurred
1: Fault: Mode fault occurred
Bit 6: Overrun flag This flag is set by hardware and reset by a software sequence. Refer to page1057 for the software sequence..
Allowed values:
0: NoOverrun: No overrun occurred
1: Overrun: Overrun occurred
Bit 7: Busy flag This flag is set and cleared by hardware. Note: The BSY flag must be used with caution: refer to and ..
Allowed values:
0: NotBusy: SPI not busy
1: Busy: SPI busy
Bit 8: Frame format error This flag is used for SPI in TI slave mode and I2S slave mode. Refer to error flags and . This flag is set by hardware and reset when SPI_SR is read by software..
Allowed values:
0: NoError: No frame format error
1: Error: A frame format error occurred
Bits 9-10: FIFO reception level.
Allowed values:
0: Empty: Rx FIFO Empty
1: Quarter: Rx 1/4 FIFO
2: Half: Rx 1/2 FIFO
3: Full: Rx FIFO full
Bits 11-12: FIFO transmission level These bits are set and cleared by hardware. Note: This bit is not used in I2S mode..
Allowed values:
0: Empty: Tx FIFO Empty
1: Quarter: Tx 1/4 FIFO
2: Half: Tx 1/2 FIFO
3: Full: Tx FIFO full
SPI data register
Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DR
rw |
Bits 0-15: Data register Data received or to be transmitted The data register serves as an interface between the Rx and Tx FIFOs. When the data register is read, RxFIFO is accessed while the write to data register accesses TxFIFO (See ). Note: Data is always right-aligned. Unused bits are ignored when writing to the register, and read as zero when the register is read. The Rx threshold setting must always correspond with the read access currently used..
Allowed values: 0x0-0xffff
Direct 8-bit access to data register
Offset: 0xc, size: 8, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DR
rw |
SPI CRC polynomial register
Offset: 0x10, size: 16, reset: 0x00000007, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CRCPOLY
rw |
SPI Rx CRC register
Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXCRC
r |
Bits 0-15: Rx CRC register When CRC calculation is enabled, the RXCRC[15:0] bits contain the computed CRC value of the subsequently received bytes. This register is reset when the CRCEN bit in SPI_CR1 register is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY Flag is set could return an incorrect value. These bits are not used in I2S mode..
Allowed values: 0x0-0xffff
SPI Tx CRC register
Offset: 0x18, size: 16, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXCRC
r |
Bits 0-15: Tx CRC register When CRC calculation is enabled, the TXCRC[7:0] bits contain the computed CRC value of the subsequently transmitted bytes. This register is reset when the CRCEN bit of SPI_CR1 is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY flag is set could return an incorrect value. These bits are not used in I2S mode..
Allowed values: 0x0-0xffff
SPI_I2S configuration register
Offset: 0x1c, size: 16, reset: 0x00000000, access: Unspecified
9/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ASTRTEN
rw |
I2SMOD
rw |
I2SE
rw |
I2SCFG
rw |
PCMSYNC
rw |
I2SSTD
rw |
CKPOL
rw |
DATLEN
rw |
CHLEN
rw |
Bit 0: Channel length (number of bits per audio channel) The bit write operation has a meaning only if DATLEN = 00 otherwise the channel length is fixed to 32-bit by hardware whatever the value filled in. Note: For correct operation, this bit should be configured when the I2S is disabled. It is not used in SPI mode..
Allowed values:
0: SixteenBit: 16-bit wide
1: ThirtyTwoBit: 32-bit wide
Bits 1-2: Data length to be transferred Note: For correct operation, these bits should be configured when the I2S is disabled. They are not used in SPI mode..
Allowed values:
0: SixteenBit: 16-bit data length
1: TwentyFourBit: 24-bit data length
2: ThirtyTwoBit: 32-bit data length
Bit 3: Inactive state clock polarity Note: For correct operation, this bit should be configured when the I2S is disabled. It is not used in SPI mode. The bit CKPOL does not affect the CK edge sensitivity used to receive or transmit the SD and WS signals..
Allowed values:
0: IdleLow: I2S clock inactive state is low level
1: IdleHigh: I2S clock inactive state is high level
Bits 4-5: I2S standard selection For more details on I2S standards, refer to Note: For correct operation, these bits should be configured when the I2S is disabled. They are not used in SPI mode..
Allowed values:
0: Philips: I2S Philips standard
1: MSB: MSB justified standard
2: LSB: LSB justified standard
3: PCM: PCM standard
Bit 7: PCM frame synchronization Note: This bit has a meaning only if I2SSTD = 11 (PCM standard is used). It is not used in SPI mode..
Allowed values:
0: Short: Short frame synchronisation
1: Long: Long frame synchronisation
Bits 8-9: I2S configuration mode Note: These bits should be configured when the I2S is disabled. They are not used in SPI mode..
Allowed values:
0: SlaveTx: Slave - transmit
1: SlaveRx: Slave - receive
2: MasterTx: Master - transmit
3: MasterRx: Master - receive
Bit 10: I2S enable Note: This bit is not used in SPI mode..
Allowed values:
0: Disabled: I2S peripheral is disabled
1: Enabled: I2S peripheral is enabled
Bit 11: I2S mode selection Note: This bit should be configured when the SPI is disabled..
Allowed values:
0: SPIMode: SPI mode is selected
1: I2SMode: I2S mode is selected
Bit 12: Asynchronous start enable. When the I2S is enabled in slave mode, the hardware starts the transfer when the I2S clock is received and an appropriate transition is detected on the WS signal. When the I2S is enabled in slave mode, the hardware starts the transfer when the I2S clock is received and the appropriate level is detected on the WS signal. Note: The appropriate transition is a falling edge on WS signal when I2S Philips Standard is used, or a rising edge for other standards. The appropriate level is a low level on WS signal when I2S Philips Standard is used, or a high level for other standards. Please refer to for additional information..
Allowed values:
0: AsyncStartDisabled: Asynchronous start disabled
1: AsyncStartEnabled: Asynchronous start enabled
SPI_I2S prescaler register
Offset: 0x20, size: 16, reset: 0x00000002, access: Unspecified
3/3 fields covered.
Bits 0-7: I2S linear prescaler I2SDIV [7:0] = 0 or I2SDIV [7:0] = 1 are forbidden values. Refer to . Note: These bits should be configured when the I2S is disabled. They are used only when the I2S is in master mode. They are not used in SPI mode..
Allowed values: 0x2-0xff
Bit 8: Odd factor for the prescaler Refer to . Note: This bit should be configured when the I2S is disabled. It is used only when the I2S is in master mode. It is not used in SPI mode..
Allowed values:
0: Even: Real divider value is I2SDIV * 2
1: Odd: Real divider value is (I2SDIV * 2) + 1
Bit 9: Master clock output enable Note: This bit should be configured when the I2S is disabled. It is used only when the I2S is in master mode. It is not used in SPI mode..
Allowed values:
0: Disabled: Master clock output is disabled
1: Enabled: Master clock output is enabled
0x40003800: Serial peripheral interface
54/54 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 (16-bit) | CR1 | ||||||||||||||||||||||||||||||||
0x4 (16-bit) | CR2 | ||||||||||||||||||||||||||||||||
0x8 (16-bit) | SR | ||||||||||||||||||||||||||||||||
0xc (16-bit) | DR | ||||||||||||||||||||||||||||||||
0xc (8-bit) | DR8 | ||||||||||||||||||||||||||||||||
0x10 (16-bit) | CRCPR | ||||||||||||||||||||||||||||||||
0x14 (16-bit) | RXCRCR | ||||||||||||||||||||||||||||||||
0x18 (16-bit) | TXCRCR | ||||||||||||||||||||||||||||||||
0x1c (16-bit) | I2SCFGR | ||||||||||||||||||||||||||||||||
0x20 (16-bit) | I2SPR |
SPI control register 1
Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified
14/14 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BIDIMODE
rw |
BIDIOE
rw |
CRCEN
rw |
CRCNEXT
rw |
CRCL
rw |
RXONLY
rw |
SSM
rw |
SSI
rw |
LSBFIRST
rw |
SPE
rw |
BR
rw |
MSTR
rw |
CPOL
rw |
CPHA
rw |
Bit 0: Clock phase Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode and SPI TI mode except the case when CRC is applied at TI mode..
Allowed values:
0: FirstEdge: The first clock transition is the first data capture edge
1: SecondEdge: The second clock transition is the first data capture edge
Bit 1: Clock polarity Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode and SPI TI mode except the case when CRC is applied at TI mode..
Allowed values:
0: IdleLow: CK to 0 when idle
1: IdleHigh: CK to 1 when idle
Bit 2: Master selection Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode..
Allowed values:
0: Slave: Slave configuration
1: Master: Master configuration
Bits 3-5: Baud rate control Note: These bits should not be changed when communication is ongoing. These bits are not used in I2S mode..
Allowed values:
0: Div2: f_PCLK / 2
1: Div4: f_PCLK / 4
2: Div8: f_PCLK / 8
3: Div16: f_PCLK / 16
4: Div32: f_PCLK / 32
5: Div64: f_PCLK / 64
6: Div128: f_PCLK / 128
7: Div256: f_PCLK / 256
Bit 6: SPI enable Note: When disabling the SPI, follow the procedure described in SPI on page1021. This bit is not used in I2S mode..
Allowed values:
0: Disabled: Peripheral disabled
1: Enabled: Peripheral enabled
Bit 7: Frame format Note: 1. This bit should not be changed when communication is ongoing. 2. This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: MSBFirst: Data is transmitted/received with the MSB first
1: LSBFirst: Data is transmitted/received with the LSB first
Bit 8: Internal slave select This bit has an effect only when the SSM bit is set. The value of this bit is forced onto the NSS pin and the I/O value of the NSS pin is ignored. Note: This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: SlaveSelected: 0 is forced onto the NSS pin and the I/O value of the NSS pin is ignored
1: SlaveNotSelected: 1 is forced onto the NSS pin and the I/O value of the NSS pin is ignored
Bit 9: Software slave management When the SSM bit is set, the NSS pin input is replaced with the value from the SSI bit. Note: This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: Disabled: Software slave management disabled
1: Enabled: Software slave management enabled
Bit 10: Receive only mode enabled. This bit enables simplex communication using a single unidirectional line to receive data exclusively. Keep BIDIMODE bit clear when receive only mode is active.This bit is also useful in a multislave system in which this particular slave is not accessed, the output from the accessed slave is not corrupted. Note: This bit is not used in I2S mode..
Allowed values:
0: FullDuplex: Full duplex (Transmit and receive)
1: OutputDisabled: Output disabled (Receive-only mode)
Bit 11: CRC length This bit is set and cleared by software to select the CRC length. Note: This bit should be written only when SPI is disabled (SPE = '0') for correct operation. This bit is not used in I2S mode..
Allowed values:
0: EightBit: 8-bit CRC length
1: SixteenBit: 16-bit CRC length
Bit 12: Transmit CRC next Note: This bit has to be written as soon as the last data is written in the SPI_DR register. This bit is not used in I2S mode..
Allowed values:
0: TxBuffer: Next transmit value is from Tx buffer
1: CRC: Next transmit value is from Tx CRC register
Bit 13: Hardware CRC calculation enable Note: This bit should be written only when SPI is disabled (SPE = '0') for correct operation. This bit is not used in I2S mode..
Allowed values:
0: Disabled: CRC calculation disabled
1: Enabled: CRC calculation enabled
Bit 14: Output enable in bidirectional mode This bit combined with the BIDIMODE bit selects the direction of transfer in bidirectional mode. Note: In master mode, the MOSI pin is used and in slave mode, the MISO pin is used. This bit is not used in I2S mode..
Allowed values:
0: OutputDisabled: Output disabled (receive-only mode)
1: OutputEnabled: Output enabled (transmit-only mode)
Bit 15: Bidirectional data mode enable. This bit enables half-duplex communication using common single bidirectional data line. Keep RXONLY bit clear when bidirectional mode is active. Note: This bit is not used in I2S mode..
Allowed values:
0: Unidirectional: 2-line unidirectional data mode selected
1: Bidirectional: 1-line bidirectional data mode selected
SPI control register 2
Offset: 0x4, size: 16, reset: 0x00000700, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LDMA_TX
rw |
LDMA_RX
rw |
FRXTH
rw |
DS
rw |
TXEIE
rw |
RXNEIE
rw |
ERRIE
rw |
FRF
rw |
NSSP
rw |
SSOE
rw |
TXDMAEN
rw |
RXDMAEN
rw |
Bit 0: Rx buffer DMA enable When this bit is set, a DMA request is generated whenever the RXNE flag is set..
Allowed values:
0: Disabled: Rx buffer DMA disabled
1: Enabled: Rx buffer DMA enabled
Bit 1: Tx buffer DMA enable When this bit is set, a DMA request is generated whenever the TXE flag is set..
Allowed values:
0: Disabled: Tx buffer DMA disabled
1: Enabled: Tx buffer DMA enabled
Bit 2: SS output enable Note: This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: Disabled: SS output is disabled in master mode
1: Enabled: SS output is enabled in master mode
Bit 3: NSS pulse management This bit is used in master mode only. it allows the SPI to generate an NSS pulse between two consecutive data when doing continuous transfers. In the case of a single data transfer, it forces the NSS pin high level after the transfer. It has no meaning if CPHA = '1', or FRF = '1'. Note: 1. This bit must be written only when the SPI is disabled (SPE=0). 2. This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: NoPulse: No NSS pulse
1: PulseGenerated: NSS pulse generated
Bit 4: Frame format 1 SPI TI mode Note: This bit must be written only when the SPI is disabled (SPE=0). This bit is not used in I2S mode..
Allowed values:
0: Motorola: SPI Motorola mode
1: TI: SPI TI mode
Bit 5: Error interrupt enable This bit controls the generation of an interrupt when an error condition occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode and UDR, OVR, and FRE in I2S mode)..
Allowed values:
0: Masked: Error interrupt masked
1: NotMasked: Error interrupt not masked
Bit 6: RX buffer not empty interrupt enable.
Allowed values:
0: Masked: RXE interrupt masked
1: NotMasked: RXE interrupt not masked
Bit 7: Tx buffer empty interrupt enable.
Allowed values:
0: Masked: TXE interrupt masked
1: NotMasked: TXE interrupt not masked
Bits 8-11: Data size These bits configure the data length for SPI transfers. If software attempts to write one of the 'Not used' values, they are forced to the value '0111' (8-bit) Note: These bits are not used in I2S mode..
Allowed values:
3: FourBit: 4-bit
4: FiveBit: 5-bit
5: SixBit: 6-bit
6: SevenBit: 7-bit
7: EightBit: 8-bit
8: NineBit: 9-bit
9: TenBit: 10-bit
10: ElevenBit: 11-bit
11: TwelveBit: 12-bit
12: ThirteenBit: 13-bit
13: FourteenBit: 14-bit
14: FifteenBit: 15-bit
15: SixteenBit: 16-bit
Bit 12: FIFO reception threshold This bit is used to set the threshold of the RXFIFO that triggers an RXNE event Note: This bit is not used in I2S mode..
Allowed values:
0: Half: RXNE event is generated if the FIFO level is greater than or equal to 1/2 (16-bit)
1: Quarter: RXNE event is generated if the FIFO level is greater than or equal to 1/4 (8-bit)
Bit 13: Last DMA transfer for reception.
Allowed values:
0: Even: Number of data to transfer for receive is even
1: Odd: Number of data to transfer for receive is odd
Bit 14: Last DMA transfer for transmission.
Allowed values:
0: Even: Number of data to transfer for transmit is even
1: Odd: Number of data to transfer for transmit is odd
SPI status register
Offset: 0x8, size: 16, reset: 0x00000002, access: Unspecified
11/11 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FTLVL
r |
FRLVL
r |
FRE
r |
BSY
r |
OVR
r |
MODF
r |
CRCERR
rw |
UDR
r |
CHSIDE
r |
TXE
r |
RXNE
r |
Bit 0: Receive buffer not empty.
Allowed values:
0: Empty: Rx buffer empty
1: NotEmpty: Rx buffer not empty
Bit 1: Transmit buffer empty.
Allowed values:
0: NotEmpty: Tx buffer not empty
1: Empty: Tx buffer empty
Bit 2: Channel side Note: This bit is not used in SPI mode. It has no significance in PCM mode..
Bit 3: Underrun flag This flag is set by hardware and reset by a software sequence. Refer to page1057 for the software sequence. Note: This bit is not used in SPI mode..
Bit 4: CRC error flag Note: This flag is set by hardware and cleared by software writing 0. This bit is not used in I2S mode..
Allowed values:
0: Match: CRC value received matches the SPIx_RXCRCR value
1: NoMatch: CRC value received does not match the SPIx_RXCRCR value
Bit 5: Mode fault This flag is set by hardware and reset by a software sequence. Refer to (MODF) on page1031 for the software sequence. Note: This bit is not used in I2S mode..
Allowed values:
0: NoFault: No mode fault occurred
1: Fault: Mode fault occurred
Bit 6: Overrun flag This flag is set by hardware and reset by a software sequence. Refer to page1057 for the software sequence..
Allowed values:
0: NoOverrun: No overrun occurred
1: Overrun: Overrun occurred
Bit 7: Busy flag This flag is set and cleared by hardware. Note: The BSY flag must be used with caution: refer to and ..
Allowed values:
0: NotBusy: SPI not busy
1: Busy: SPI busy
Bit 8: Frame format error This flag is used for SPI in TI slave mode and I2S slave mode. Refer to error flags and . This flag is set by hardware and reset when SPI_SR is read by software..
Allowed values:
0: NoError: No frame format error
1: Error: A frame format error occurred
Bits 9-10: FIFO reception level.
Allowed values:
0: Empty: Rx FIFO Empty
1: Quarter: Rx 1/4 FIFO
2: Half: Rx 1/2 FIFO
3: Full: Rx FIFO full
Bits 11-12: FIFO transmission level These bits are set and cleared by hardware. Note: This bit is not used in I2S mode..
Allowed values:
0: Empty: Tx FIFO Empty
1: Quarter: Tx 1/4 FIFO
2: Half: Tx 1/2 FIFO
3: Full: Tx FIFO full
SPI data register
Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DR
rw |
Bits 0-15: Data register Data received or to be transmitted The data register serves as an interface between the Rx and Tx FIFOs. When the data register is read, RxFIFO is accessed while the write to data register accesses TxFIFO (See ). Note: Data is always right-aligned. Unused bits are ignored when writing to the register, and read as zero when the register is read. The Rx threshold setting must always correspond with the read access currently used..
Allowed values: 0x0-0xffff
Direct 8-bit access to data register
Offset: 0xc, size: 8, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DR
rw |
SPI CRC polynomial register
Offset: 0x10, size: 16, reset: 0x00000007, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CRCPOLY
rw |
SPI Rx CRC register
Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXCRC
r |
Bits 0-15: Rx CRC register When CRC calculation is enabled, the RXCRC[15:0] bits contain the computed CRC value of the subsequently received bytes. This register is reset when the CRCEN bit in SPI_CR1 register is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY Flag is set could return an incorrect value. These bits are not used in I2S mode..
Allowed values: 0x0-0xffff
SPI Tx CRC register
Offset: 0x18, size: 16, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXCRC
r |
Bits 0-15: Tx CRC register When CRC calculation is enabled, the TXCRC[7:0] bits contain the computed CRC value of the subsequently transmitted bytes. This register is reset when the CRCEN bit of SPI_CR1 is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY flag is set could return an incorrect value. These bits are not used in I2S mode..
Allowed values: 0x0-0xffff
SPI_I2S configuration register
Offset: 0x1c, size: 16, reset: 0x00000000, access: Unspecified
9/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ASTRTEN
rw |
I2SMOD
rw |
I2SE
rw |
I2SCFG
rw |
PCMSYNC
rw |
I2SSTD
rw |
CKPOL
rw |
DATLEN
rw |
CHLEN
rw |
Bit 0: Channel length (number of bits per audio channel) The bit write operation has a meaning only if DATLEN = 00 otherwise the channel length is fixed to 32-bit by hardware whatever the value filled in. Note: For correct operation, this bit should be configured when the I2S is disabled. It is not used in SPI mode..
Allowed values:
0: SixteenBit: 16-bit wide
1: ThirtyTwoBit: 32-bit wide
Bits 1-2: Data length to be transferred Note: For correct operation, these bits should be configured when the I2S is disabled. They are not used in SPI mode..
Allowed values:
0: SixteenBit: 16-bit data length
1: TwentyFourBit: 24-bit data length
2: ThirtyTwoBit: 32-bit data length
Bit 3: Inactive state clock polarity Note: For correct operation, this bit should be configured when the I2S is disabled. It is not used in SPI mode. The bit CKPOL does not affect the CK edge sensitivity used to receive or transmit the SD and WS signals..
Allowed values:
0: IdleLow: I2S clock inactive state is low level
1: IdleHigh: I2S clock inactive state is high level
Bits 4-5: I2S standard selection For more details on I2S standards, refer to Note: For correct operation, these bits should be configured when the I2S is disabled. They are not used in SPI mode..
Allowed values:
0: Philips: I2S Philips standard
1: MSB: MSB justified standard
2: LSB: LSB justified standard
3: PCM: PCM standard
Bit 7: PCM frame synchronization Note: This bit has a meaning only if I2SSTD = 11 (PCM standard is used). It is not used in SPI mode..
Allowed values:
0: Short: Short frame synchronisation
1: Long: Long frame synchronisation
Bits 8-9: I2S configuration mode Note: These bits should be configured when the I2S is disabled. They are not used in SPI mode..
Allowed values:
0: SlaveTx: Slave - transmit
1: SlaveRx: Slave - receive
2: MasterTx: Master - transmit
3: MasterRx: Master - receive
Bit 10: I2S enable Note: This bit is not used in SPI mode..
Allowed values:
0: Disabled: I2S peripheral is disabled
1: Enabled: I2S peripheral is enabled
Bit 11: I2S mode selection Note: This bit should be configured when the SPI is disabled..
Allowed values:
0: SPIMode: SPI mode is selected
1: I2SMode: I2S mode is selected
Bit 12: Asynchronous start enable. When the I2S is enabled in slave mode, the hardware starts the transfer when the I2S clock is received and an appropriate transition is detected on the WS signal. When the I2S is enabled in slave mode, the hardware starts the transfer when the I2S clock is received and the appropriate level is detected on the WS signal. Note: The appropriate transition is a falling edge on WS signal when I2S Philips Standard is used, or a rising edge for other standards. The appropriate level is a low level on WS signal when I2S Philips Standard is used, or a high level for other standards. Please refer to for additional information..
Allowed values:
0: AsyncStartDisabled: Asynchronous start disabled
1: AsyncStartEnabled: Asynchronous start enabled
SPI_I2S prescaler register
Offset: 0x20, size: 16, reset: 0x00000002, access: Unspecified
3/3 fields covered.
Bits 0-7: I2S linear prescaler I2SDIV [7:0] = 0 or I2SDIV [7:0] = 1 are forbidden values. Refer to . Note: These bits should be configured when the I2S is disabled. They are used only when the I2S is in master mode. They are not used in SPI mode..
Allowed values: 0x2-0xff
Bit 8: Odd factor for the prescaler Refer to . Note: This bit should be configured when the I2S is disabled. It is used only when the I2S is in master mode. It is not used in SPI mode..
Allowed values:
0: Even: Real divider value is I2SDIV * 2
1: Odd: Real divider value is (I2SDIV * 2) + 1
Bit 9: Master clock output enable Note: This bit should be configured when the I2S is disabled. It is used only when the I2S is in master mode. It is not used in SPI mode..
Allowed values:
0: Disabled: Master clock output is disabled
1: Enabled: Master clock output is enabled
0x40003c00: Serial peripheral interface
54/54 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 (16-bit) | CR1 | ||||||||||||||||||||||||||||||||
0x4 (16-bit) | CR2 | ||||||||||||||||||||||||||||||||
0x8 (16-bit) | SR | ||||||||||||||||||||||||||||||||
0xc (16-bit) | DR | ||||||||||||||||||||||||||||||||
0xc (8-bit) | DR8 | ||||||||||||||||||||||||||||||||
0x10 (16-bit) | CRCPR | ||||||||||||||||||||||||||||||||
0x14 (16-bit) | RXCRCR | ||||||||||||||||||||||||||||||||
0x18 (16-bit) | TXCRCR | ||||||||||||||||||||||||||||||||
0x1c (16-bit) | I2SCFGR | ||||||||||||||||||||||||||||||||
0x20 (16-bit) | I2SPR |
SPI control register 1
Offset: 0x0, size: 16, reset: 0x00000000, access: Unspecified
14/14 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BIDIMODE
rw |
BIDIOE
rw |
CRCEN
rw |
CRCNEXT
rw |
CRCL
rw |
RXONLY
rw |
SSM
rw |
SSI
rw |
LSBFIRST
rw |
SPE
rw |
BR
rw |
MSTR
rw |
CPOL
rw |
CPHA
rw |
Bit 0: Clock phase Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode and SPI TI mode except the case when CRC is applied at TI mode..
Allowed values:
0: FirstEdge: The first clock transition is the first data capture edge
1: SecondEdge: The second clock transition is the first data capture edge
Bit 1: Clock polarity Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode and SPI TI mode except the case when CRC is applied at TI mode..
Allowed values:
0: IdleLow: CK to 0 when idle
1: IdleHigh: CK to 1 when idle
Bit 2: Master selection Note: This bit should not be changed when communication is ongoing. This bit is not used in I2S mode..
Allowed values:
0: Slave: Slave configuration
1: Master: Master configuration
Bits 3-5: Baud rate control Note: These bits should not be changed when communication is ongoing. These bits are not used in I2S mode..
Allowed values:
0: Div2: f_PCLK / 2
1: Div4: f_PCLK / 4
2: Div8: f_PCLK / 8
3: Div16: f_PCLK / 16
4: Div32: f_PCLK / 32
5: Div64: f_PCLK / 64
6: Div128: f_PCLK / 128
7: Div256: f_PCLK / 256
Bit 6: SPI enable Note: When disabling the SPI, follow the procedure described in SPI on page1021. This bit is not used in I2S mode..
Allowed values:
0: Disabled: Peripheral disabled
1: Enabled: Peripheral enabled
Bit 7: Frame format Note: 1. This bit should not be changed when communication is ongoing. 2. This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: MSBFirst: Data is transmitted/received with the MSB first
1: LSBFirst: Data is transmitted/received with the LSB first
Bit 8: Internal slave select This bit has an effect only when the SSM bit is set. The value of this bit is forced onto the NSS pin and the I/O value of the NSS pin is ignored. Note: This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: SlaveSelected: 0 is forced onto the NSS pin and the I/O value of the NSS pin is ignored
1: SlaveNotSelected: 1 is forced onto the NSS pin and the I/O value of the NSS pin is ignored
Bit 9: Software slave management When the SSM bit is set, the NSS pin input is replaced with the value from the SSI bit. Note: This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: Disabled: Software slave management disabled
1: Enabled: Software slave management enabled
Bit 10: Receive only mode enabled. This bit enables simplex communication using a single unidirectional line to receive data exclusively. Keep BIDIMODE bit clear when receive only mode is active.This bit is also useful in a multislave system in which this particular slave is not accessed, the output from the accessed slave is not corrupted. Note: This bit is not used in I2S mode..
Allowed values:
0: FullDuplex: Full duplex (Transmit and receive)
1: OutputDisabled: Output disabled (Receive-only mode)
Bit 11: CRC length This bit is set and cleared by software to select the CRC length. Note: This bit should be written only when SPI is disabled (SPE = '0') for correct operation. This bit is not used in I2S mode..
Allowed values:
0: EightBit: 8-bit CRC length
1: SixteenBit: 16-bit CRC length
Bit 12: Transmit CRC next Note: This bit has to be written as soon as the last data is written in the SPI_DR register. This bit is not used in I2S mode..
Allowed values:
0: TxBuffer: Next transmit value is from Tx buffer
1: CRC: Next transmit value is from Tx CRC register
Bit 13: Hardware CRC calculation enable Note: This bit should be written only when SPI is disabled (SPE = '0') for correct operation. This bit is not used in I2S mode..
Allowed values:
0: Disabled: CRC calculation disabled
1: Enabled: CRC calculation enabled
Bit 14: Output enable in bidirectional mode This bit combined with the BIDIMODE bit selects the direction of transfer in bidirectional mode. Note: In master mode, the MOSI pin is used and in slave mode, the MISO pin is used. This bit is not used in I2S mode..
Allowed values:
0: OutputDisabled: Output disabled (receive-only mode)
1: OutputEnabled: Output enabled (transmit-only mode)
Bit 15: Bidirectional data mode enable. This bit enables half-duplex communication using common single bidirectional data line. Keep RXONLY bit clear when bidirectional mode is active. Note: This bit is not used in I2S mode..
Allowed values:
0: Unidirectional: 2-line unidirectional data mode selected
1: Bidirectional: 1-line bidirectional data mode selected
SPI control register 2
Offset: 0x4, size: 16, reset: 0x00000700, access: Unspecified
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LDMA_TX
rw |
LDMA_RX
rw |
FRXTH
rw |
DS
rw |
TXEIE
rw |
RXNEIE
rw |
ERRIE
rw |
FRF
rw |
NSSP
rw |
SSOE
rw |
TXDMAEN
rw |
RXDMAEN
rw |
Bit 0: Rx buffer DMA enable When this bit is set, a DMA request is generated whenever the RXNE flag is set..
Allowed values:
0: Disabled: Rx buffer DMA disabled
1: Enabled: Rx buffer DMA enabled
Bit 1: Tx buffer DMA enable When this bit is set, a DMA request is generated whenever the TXE flag is set..
Allowed values:
0: Disabled: Tx buffer DMA disabled
1: Enabled: Tx buffer DMA enabled
Bit 2: SS output enable Note: This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: Disabled: SS output is disabled in master mode
1: Enabled: SS output is enabled in master mode
Bit 3: NSS pulse management This bit is used in master mode only. it allows the SPI to generate an NSS pulse between two consecutive data when doing continuous transfers. In the case of a single data transfer, it forces the NSS pin high level after the transfer. It has no meaning if CPHA = '1', or FRF = '1'. Note: 1. This bit must be written only when the SPI is disabled (SPE=0). 2. This bit is not used in I2S mode and SPI TI mode..
Allowed values:
0: NoPulse: No NSS pulse
1: PulseGenerated: NSS pulse generated
Bit 4: Frame format 1 SPI TI mode Note: This bit must be written only when the SPI is disabled (SPE=0). This bit is not used in I2S mode..
Allowed values:
0: Motorola: SPI Motorola mode
1: TI: SPI TI mode
Bit 5: Error interrupt enable This bit controls the generation of an interrupt when an error condition occurs (CRCERR, OVR, MODF in SPI mode, FRE at TI mode and UDR, OVR, and FRE in I2S mode)..
Allowed values:
0: Masked: Error interrupt masked
1: NotMasked: Error interrupt not masked
Bit 6: RX buffer not empty interrupt enable.
Allowed values:
0: Masked: RXE interrupt masked
1: NotMasked: RXE interrupt not masked
Bit 7: Tx buffer empty interrupt enable.
Allowed values:
0: Masked: TXE interrupt masked
1: NotMasked: TXE interrupt not masked
Bits 8-11: Data size These bits configure the data length for SPI transfers. If software attempts to write one of the 'Not used' values, they are forced to the value '0111' (8-bit) Note: These bits are not used in I2S mode..
Allowed values:
3: FourBit: 4-bit
4: FiveBit: 5-bit
5: SixBit: 6-bit
6: SevenBit: 7-bit
7: EightBit: 8-bit
8: NineBit: 9-bit
9: TenBit: 10-bit
10: ElevenBit: 11-bit
11: TwelveBit: 12-bit
12: ThirteenBit: 13-bit
13: FourteenBit: 14-bit
14: FifteenBit: 15-bit
15: SixteenBit: 16-bit
Bit 12: FIFO reception threshold This bit is used to set the threshold of the RXFIFO that triggers an RXNE event Note: This bit is not used in I2S mode..
Allowed values:
0: Half: RXNE event is generated if the FIFO level is greater than or equal to 1/2 (16-bit)
1: Quarter: RXNE event is generated if the FIFO level is greater than or equal to 1/4 (8-bit)
Bit 13: Last DMA transfer for reception.
Allowed values:
0: Even: Number of data to transfer for receive is even
1: Odd: Number of data to transfer for receive is odd
Bit 14: Last DMA transfer for transmission.
Allowed values:
0: Even: Number of data to transfer for transmit is even
1: Odd: Number of data to transfer for transmit is odd
SPI status register
Offset: 0x8, size: 16, reset: 0x00000002, access: Unspecified
11/11 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FTLVL
r |
FRLVL
r |
FRE
r |
BSY
r |
OVR
r |
MODF
r |
CRCERR
rw |
UDR
r |
CHSIDE
r |
TXE
r |
RXNE
r |
Bit 0: Receive buffer not empty.
Allowed values:
0: Empty: Rx buffer empty
1: NotEmpty: Rx buffer not empty
Bit 1: Transmit buffer empty.
Allowed values:
0: NotEmpty: Tx buffer not empty
1: Empty: Tx buffer empty
Bit 2: Channel side Note: This bit is not used in SPI mode. It has no significance in PCM mode..
Bit 3: Underrun flag This flag is set by hardware and reset by a software sequence. Refer to page1057 for the software sequence. Note: This bit is not used in SPI mode..
Bit 4: CRC error flag Note: This flag is set by hardware and cleared by software writing 0. This bit is not used in I2S mode..
Allowed values:
0: Match: CRC value received matches the SPIx_RXCRCR value
1: NoMatch: CRC value received does not match the SPIx_RXCRCR value
Bit 5: Mode fault This flag is set by hardware and reset by a software sequence. Refer to (MODF) on page1031 for the software sequence. Note: This bit is not used in I2S mode..
Allowed values:
0: NoFault: No mode fault occurred
1: Fault: Mode fault occurred
Bit 6: Overrun flag This flag is set by hardware and reset by a software sequence. Refer to page1057 for the software sequence..
Allowed values:
0: NoOverrun: No overrun occurred
1: Overrun: Overrun occurred
Bit 7: Busy flag This flag is set and cleared by hardware. Note: The BSY flag must be used with caution: refer to and ..
Allowed values:
0: NotBusy: SPI not busy
1: Busy: SPI busy
Bit 8: Frame format error This flag is used for SPI in TI slave mode and I2S slave mode. Refer to error flags and . This flag is set by hardware and reset when SPI_SR is read by software..
Allowed values:
0: NoError: No frame format error
1: Error: A frame format error occurred
Bits 9-10: FIFO reception level.
Allowed values:
0: Empty: Rx FIFO Empty
1: Quarter: Rx 1/4 FIFO
2: Half: Rx 1/2 FIFO
3: Full: Rx FIFO full
Bits 11-12: FIFO transmission level These bits are set and cleared by hardware. Note: This bit is not used in I2S mode..
Allowed values:
0: Empty: Tx FIFO Empty
1: Quarter: Tx 1/4 FIFO
2: Half: Tx 1/2 FIFO
3: Full: Tx FIFO full
SPI data register
Offset: 0xc, size: 16, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DR
rw |
Bits 0-15: Data register Data received or to be transmitted The data register serves as an interface between the Rx and Tx FIFOs. When the data register is read, RxFIFO is accessed while the write to data register accesses TxFIFO (See ). Note: Data is always right-aligned. Unused bits are ignored when writing to the register, and read as zero when the register is read. The Rx threshold setting must always correspond with the read access currently used..
Allowed values: 0x0-0xffff
Direct 8-bit access to data register
Offset: 0xc, size: 8, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DR
rw |
SPI CRC polynomial register
Offset: 0x10, size: 16, reset: 0x00000007, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CRCPOLY
rw |
SPI Rx CRC register
Offset: 0x14, size: 16, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXCRC
r |
Bits 0-15: Rx CRC register When CRC calculation is enabled, the RXCRC[15:0] bits contain the computed CRC value of the subsequently received bytes. This register is reset when the CRCEN bit in SPI_CR1 register is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY Flag is set could return an incorrect value. These bits are not used in I2S mode..
Allowed values: 0x0-0xffff
SPI Tx CRC register
Offset: 0x18, size: 16, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXCRC
r |
Bits 0-15: Tx CRC register When CRC calculation is enabled, the TXCRC[7:0] bits contain the computed CRC value of the subsequently transmitted bytes. This register is reset when the CRCEN bit of SPI_CR1 is written to 1. The CRC is calculated serially using the polynomial programmed in the SPI_CRCPR register. Only the 8 LSB bits are considered when the CRC frame format is set to be 8-bit length (CRCL bit in the SPI_CR1 is cleared). CRC calculation is done based on any CRC8 standard. The entire 16-bits of this register are considered when a 16-bit CRC frame format is selected (CRCL bit in the SPI_CR1 register is set). CRC calculation is done based on any CRC16 standard. Note: A read to this register when the BSY flag is set could return an incorrect value. These bits are not used in I2S mode..
Allowed values: 0x0-0xffff
SPI_I2S configuration register
Offset: 0x1c, size: 16, reset: 0x00000000, access: Unspecified
9/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ASTRTEN
rw |
I2SMOD
rw |
I2SE
rw |
I2SCFG
rw |
PCMSYNC
rw |
I2SSTD
rw |
CKPOL
rw |
DATLEN
rw |
CHLEN
rw |
Bit 0: Channel length (number of bits per audio channel) The bit write operation has a meaning only if DATLEN = 00 otherwise the channel length is fixed to 32-bit by hardware whatever the value filled in. Note: For correct operation, this bit should be configured when the I2S is disabled. It is not used in SPI mode..
Allowed values:
0: SixteenBit: 16-bit wide
1: ThirtyTwoBit: 32-bit wide
Bits 1-2: Data length to be transferred Note: For correct operation, these bits should be configured when the I2S is disabled. They are not used in SPI mode..
Allowed values:
0: SixteenBit: 16-bit data length
1: TwentyFourBit: 24-bit data length
2: ThirtyTwoBit: 32-bit data length
Bit 3: Inactive state clock polarity Note: For correct operation, this bit should be configured when the I2S is disabled. It is not used in SPI mode. The bit CKPOL does not affect the CK edge sensitivity used to receive or transmit the SD and WS signals..
Allowed values:
0: IdleLow: I2S clock inactive state is low level
1: IdleHigh: I2S clock inactive state is high level
Bits 4-5: I2S standard selection For more details on I2S standards, refer to Note: For correct operation, these bits should be configured when the I2S is disabled. They are not used in SPI mode..
Allowed values:
0: Philips: I2S Philips standard
1: MSB: MSB justified standard
2: LSB: LSB justified standard
3: PCM: PCM standard
Bit 7: PCM frame synchronization Note: This bit has a meaning only if I2SSTD = 11 (PCM standard is used). It is not used in SPI mode..
Allowed values:
0: Short: Short frame synchronisation
1: Long: Long frame synchronisation
Bits 8-9: I2S configuration mode Note: These bits should be configured when the I2S is disabled. They are not used in SPI mode..
Allowed values:
0: SlaveTx: Slave - transmit
1: SlaveRx: Slave - receive
2: MasterTx: Master - transmit
3: MasterRx: Master - receive
Bit 10: I2S enable Note: This bit is not used in SPI mode..
Allowed values:
0: Disabled: I2S peripheral is disabled
1: Enabled: I2S peripheral is enabled
Bit 11: I2S mode selection Note: This bit should be configured when the SPI is disabled..
Allowed values:
0: SPIMode: SPI mode is selected
1: I2SMode: I2S mode is selected
Bit 12: Asynchronous start enable. When the I2S is enabled in slave mode, the hardware starts the transfer when the I2S clock is received and an appropriate transition is detected on the WS signal. When the I2S is enabled in slave mode, the hardware starts the transfer when the I2S clock is received and the appropriate level is detected on the WS signal. Note: The appropriate transition is a falling edge on WS signal when I2S Philips Standard is used, or a rising edge for other standards. The appropriate level is a low level on WS signal when I2S Philips Standard is used, or a high level for other standards. Please refer to for additional information..
Allowed values:
0: AsyncStartDisabled: Asynchronous start disabled
1: AsyncStartEnabled: Asynchronous start enabled
SPI_I2S prescaler register
Offset: 0x20, size: 16, reset: 0x00000002, access: Unspecified
3/3 fields covered.
Bits 0-7: I2S linear prescaler I2SDIV [7:0] = 0 or I2SDIV [7:0] = 1 are forbidden values. Refer to . Note: These bits should be configured when the I2S is disabled. They are used only when the I2S is in master mode. They are not used in SPI mode..
Allowed values: 0x2-0xff
Bit 8: Odd factor for the prescaler Refer to . Note: This bit should be configured when the I2S is disabled. It is used only when the I2S is in master mode. It is not used in SPI mode..
Allowed values:
0: Even: Real divider value is I2SDIV * 2
1: Odd: Real divider value is (I2SDIV * 2) + 1
Bit 9: Master clock output enable Note: This bit should be configured when the I2S is disabled. It is used only when the I2S is in master mode. It is not used in SPI mode..
Allowed values:
0: Disabled: Master clock output is disabled
1: Enabled: Master clock output is enabled
0x40010000: System configuration controller
102/102 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CFGR1 | ||||||||||||||||||||||||||||||||
0x18 | CFGR2 | ||||||||||||||||||||||||||||||||
0x80 | ITLINE0 | ||||||||||||||||||||||||||||||||
0x88 | ITLINE2 | ||||||||||||||||||||||||||||||||
0x8c | ITLINE3 | ||||||||||||||||||||||||||||||||
0x90 | ITLINE4 | ||||||||||||||||||||||||||||||||
0x94 | ITLINE5 | ||||||||||||||||||||||||||||||||
0x98 | ITLINE6 | ||||||||||||||||||||||||||||||||
0x9c | ITLINE7 | ||||||||||||||||||||||||||||||||
0xa0 | ITLINE8 | ||||||||||||||||||||||||||||||||
0xa4 | ITLINE9 | ||||||||||||||||||||||||||||||||
0xa8 | ITLINE10 | ||||||||||||||||||||||||||||||||
0xac | ITLINE11 | ||||||||||||||||||||||||||||||||
0xb0 | ITLINE12 | ||||||||||||||||||||||||||||||||
0xb4 | ITLINE13 | ||||||||||||||||||||||||||||||||
0xb8 | ITLINE14 | ||||||||||||||||||||||||||||||||
0xbc | ITLINE15 | ||||||||||||||||||||||||||||||||
0xc0 | ITLINE16 | ||||||||||||||||||||||||||||||||
0xc4 | ITLINE17 | ||||||||||||||||||||||||||||||||
0xc8 | ITLINE18 | ||||||||||||||||||||||||||||||||
0xcc | ITLINE19 | ||||||||||||||||||||||||||||||||
0xd0 | ITLINE20 | ||||||||||||||||||||||||||||||||
0xd4 | ITLINE21 | ||||||||||||||||||||||||||||||||
0xd8 | ITLINE22 | ||||||||||||||||||||||||||||||||
0xdc | ITLINE23 | ||||||||||||||||||||||||||||||||
0xe0 | ITLINE24 | ||||||||||||||||||||||||||||||||
0xe4 | ITLINE25 | ||||||||||||||||||||||||||||||||
0xe8 | ITLINE26 | ||||||||||||||||||||||||||||||||
0xec | ITLINE27 | ||||||||||||||||||||||||||||||||
0xf0 | ITLINE28 | ||||||||||||||||||||||||||||||||
0xf4 | ITLINE29 | ||||||||||||||||||||||||||||||||
0xf8 | ITLINE30 | ||||||||||||||||||||||||||||||||
0xfc | ITLINE31 |
SYSCFG configuration register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
I2C3_FMP
rw |
I2C_PA10_FMP
rw |
I2C_PA9_FMP
rw |
I2C2_FMP
rw |
I2C1_FMP
rw |
I2C_PB9_FMP
rw |
I2C_PB8_FMP
rw |
I2C_PB7_FMP
rw |
I2C_PBx_FMP
rw |
|||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
UCPD2_STROBE
rw |
UCPD1_STROBE
rw |
BOOSTEN
rw |
IR_MOD
rw |
IR_POL
rw |
PA12_RMP
rw |
PA11_RMP
rw |
MEM_MODE
rw |
Bits 0-1: Memory mapping selection bits.
Allowed values:
0: MainFlash: Main flash memory mapped at zero address
2: SystemFlash: System flash memory mapped at zero address
3: SRAM: Embedded SRAM mapped at zero address
Bit 3: PA11_RMP.
Allowed values:
0: Normal: PA11 pin connected to PA11 GPIO
1: Remap: PA11 pin connected to PA9 GPIO
Bit 4: PA11 and PA12 remapping bit..
Allowed values:
0: Normal: PA12 pin connected to PA12 GPIO
1: Remap: PA12 pin connected to PA10 GPIO
Bit 5: IR output polarity selection.
Allowed values:
0: Normal: Output of IRTIM is not inverted
1: Inverted: Output of IRTIM is inverted
Bits 6-7: IR Modulation Envelope signal selection..
Allowed values:
0: TIM16: IR modulation envelope from TIM16
1: USART1: IR modulation envelope from USART1
2: USART4: IR modulation envelope from USART4
Bit 8: I/O analog switch voltage booster enable.
Allowed values:
0: VDD: supply analog switches from VDD
1: BOOST: supply analog switches from dedicated voltage booster
Bit 9: Strobe signal bit for UCPD1.
Allowed values:
1: Disconnect: Disconnect the UCPD pull-down resistors
Bit 10: Strobe signal bit for UCPD2.
Allowed values:
1: Disconnect: Disconnect the UCPD pull-down resistors
Bit 16: Fast Mode Plus (FM+) driving capability activation bits.
Allowed values:
0: Disabled: Uses normal GPIO drive
1: Enabled: Uses I2C FastMode+ drive
Bit 17: I2C_PB7_FMP.
Allowed values:
0: Disabled: Uses normal GPIO drive
1: Enabled: Uses I2C FastMode+ drive
Bit 18: I2C_PB8_FMP.
Allowed values:
0: Disabled: Uses normal GPIO drive
1: Enabled: Uses I2C FastMode+ drive
Bit 19: I2C_PB9_FMP.
Allowed values:
0: Disabled: Uses normal GPIO drive
1: Enabled: Uses I2C FastMode+ drive
Bit 20: FM+ driving capability activation for I2C1.
Allowed values:
0: Disabled: Uses normal GPIO drive
1: Enabled: Uses I2C FastMode+ drive
Bit 21: FM+ driving capability activation for I2C2.
Allowed values:
0: Disabled: Uses normal GPIO drive
1: Enabled: Uses I2C FastMode+ drive
Bit 22: Fast Mode Plus (FM+) driving capability activation bits.
Allowed values:
0: Disabled: Uses normal GPIO drive
1: Enabled: Uses I2C FastMode+ drive
Bit 23: Fast Mode Plus (FM+) driving capability activation bits.
Allowed values:
0: Disabled: Uses normal GPIO drive
1: Enabled: Uses I2C FastMode+ drive
Bit 24: I2C3_FMP.
Allowed values:
0: Disabled: Uses normal GPIO drive
1: Enabled: Uses I2C FastMode+ drive
SYSCFG configuration register 1
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
4/4 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SRAM_PEF
rw |
ECC_LOCK
rw |
SRAM_PARITY_LOCK
rw |
LOCKUP_LOCK
rw |
Bit 0: Cortex-M0+ LOCKUP bit enable bit.
Allowed values:
0: Disabled: error not connected to timers
1: Enabled: error triggers TIM1/15/16/17 break input
Bit 1: SRAM parity lock bit.
Allowed values:
0: Disabled: error not connected to timers
1: Enabled: error triggers TIM1/15/16/17 break input
Bit 3: ECC error lock bit.
Allowed values:
0: Disabled: error not connected to timers
1: Enabled: error triggers TIM1/15/16/17 break input
Bit 8: SRAM parity error flag.
Allowed values:
0: Normal: No SRAM parity error detected
1: Error: SRAM parity error detected
interrupt line 0 status register
Offset: 0x80, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WWDG
r |
interrupt line 2 status register
Offset: 0x88, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 3 status register
Offset: 0x8c, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 4 status register
Offset: 0x90, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 5 status register
Offset: 0x94, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 6 status register
Offset: 0x98, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 7 status register
Offset: 0x9c, size: 32, reset: 0x00000000, access: read-only
12/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EXTI15
r |
EXTI14
r |
EXTI13
r |
EXTI12
r |
EXTI11
r |
EXTI10
r |
EXTI9
r |
EXTI8
r |
EXTI7
r |
EXTI6
r |
EXTI5
r |
EXTI4
r |
Bit 0: EXTI4.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: EXTI5.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: EXTI6.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 3: EXTI7.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 4: EXTI8.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 5: EXTI9.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 6: EXTI10.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 7: EXTI11.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 8: EXTI12.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 9: EXTI13.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 10: EXTI14.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 11: EXTI15.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
interrupt line 8 status register
Offset: 0xa0, size: 32, reset: 0x00000000, access: read-only
3/3 fields covered.
Bit 0: UCPD1.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: UCPD2.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: USB.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
interrupt line 9 status register
Offset: 0xa4, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMA1_CH1
r |
interrupt line 10 status register
Offset: 0xa8, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 11 status register
Offset: 0xac, size: 32, reset: 0x00000000, access: read-only
10/10 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMA2_CH5
r |
DMA2_CH4
r |
DMA2_CH3
r |
DMA2_CH2
r |
DMA2_CH1
r |
DMA1_CH7
r |
DMA1_CH6
r |
DMA1_CH5
r |
DMA1_CH4
r |
DMAMUX
r |
Bit 0: DMAMUX.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: DMA1_CH4.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: DMA1_CH5.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 3: DMA1_CH6.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 4: DMA1_CH7.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 5: DMA2_CH1.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 6: DMA2_CH2.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 7: DMA2_CH3.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 8: DMA2_CH4.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 9: DMA2_CH5.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
interrupt line 12 status register
Offset: 0xb0, size: 32, reset: 0x00000000, access: read-only
4/4 fields covered.
Bit 0: ADC.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: COMP1.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: COMP2.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 3: COMP3.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
interrupt line 13 status register
Offset: 0xb4, size: 32, reset: 0x00000000, access: read-only
4/4 fields covered.
Bit 0: TIM1_CCU.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: TIM1_TRG.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: TIM1_UPD.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 3: TIM1_BRK.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
interrupt line 14 status register
Offset: 0xb8, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TIM1_CC
r |
interrupt line 15 status register
Offset: 0xbc, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TIM2
r |
interrupt line 16 status register
Offset: 0xc0, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 17 status register
Offset: 0xc4, size: 32, reset: 0x00000000, access: read-only
3/3 fields covered.
Bit 0: TIM6.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: DAC.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: LPTIM1.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
interrupt line 18 status register
Offset: 0xc8, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 19 status register
Offset: 0xcc, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TIM14
r |
interrupt line 20 status register
Offset: 0xd0, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TIM15
r |
interrupt line 21 status register
Offset: 0xd4, size: 32, reset: 0x00000000, access: read-only
3/3 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FDCAN2_IT0
r |
FDCAN1_IT0
r |
TIM16
r |
Bit 0: TIM16.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: FDCAN1_IT0.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: FDCAN2_IT0.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
interrupt line 22 status register
Offset: 0xd8, size: 32, reset: 0x00000000, access: read-only
3/3 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FDCAN2_IT1
r |
FDCAN1_IT1
r |
TIM17
r |
Bit 0: TIM17.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: FDCAN1_IT1.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: FDCAN2_IT1.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
interrupt line 23 status register
Offset: 0xdc, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
I2C1
r |
interrupt line 24 status register
Offset: 0xe0, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 25 status register
Offset: 0xe4, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SPI1
r |
interrupt line 26 status register
Offset: 0xe8, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 27 status register
Offset: 0xec, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
USART1
r |
interrupt line 28 status register
Offset: 0xf0, size: 32, reset: 0x00000000, access: read-only
2/2 fields covered.
interrupt line 29 status register
Offset: 0xf4, size: 32, reset: 0x00000000, access: read-only
5/5 fields covered.
Bit 0: USART3.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 1: USART4.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 2: LPUART1.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 3: USART5.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
Bit 4: USART6.
Allowed values:
0: NotInterrupted: Interrupt not triggered
1: Interrupted: Interrup triggered
interrupt line 25 status register
Offset: 0xf8, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CEC
r |
0x4000b000: Tamper and backup registers
12/45 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0xc | FLTCR | ||||||||||||||||||||||||||||||||
0x2c | IER | ||||||||||||||||||||||||||||||||
0x30 | SR | ||||||||||||||||||||||||||||||||
0x34 | MISR | ||||||||||||||||||||||||||||||||
0x3c | SCR | ||||||||||||||||||||||||||||||||
0x100 | BKP[0]R | ||||||||||||||||||||||||||||||||
0x104 | BKP[1]R | ||||||||||||||||||||||||||||||||
0x108 | BKP[2]R | ||||||||||||||||||||||||||||||||
0x10c | BKP[3]R | ||||||||||||||||||||||||||||||||
0x110 | BKP[4]R |
TAMP control register 1
Offset: 0x0, size: 32, reset: 0xFFFF0000, access: Unspecified
0/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ITAMP6E
rw |
ITAMP5E
rw |
ITAMP4E
rw |
ITAMP3E
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TAMP2E
rw |
TAMP1E
rw |
Bit 0: Tamper detection on TAMP_IN1 enable.
Bit 1: Tamper detection on TAMP_IN2 enable.
Bit 18: Internal tamper 3 enable: LSE monitoring.
Bit 19: Internal tamper 4 enable: HSE monitoring.
Bit 20: Internal tamper 5 enable: RTC calendar overflow.
Bit 21: Internal tamper 6 enable: ST manufacturer readout.
TAMP control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
0/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TAMP2TRG
rw |
TAMP1TRG
rw |
TAMP2MSK
rw |
TAMP1MSK
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TAMP2NOER
rw |
TAMP1NOER
rw |
Bit 0: Tamper 1 no erase.
Bit 1: Tamper 2 no erase.
Bit 16: Tamper 1 mask The tamper 1 interrupt must not be enabled when TAMP1MSK is set..
Bit 17: Tamper 2 mask The tamper 2 interrupt must not be enabled when TAMP2MSK is set..
Bit 24: Active level for tamper 1 input (active mode disabled) If TAMPFLT = 00 Tamper 1 input rising edge and high level triggers a tamper detection event. If TAMPFLT = 00 Tamper 1 input falling edge and low level triggers a tamper detection event..
Bit 25: Active level for tamper 2 input (active mode disabled) If TAMPFLT = 00 Tamper 2 input rising edge and high level triggers a tamper detection event. If TAMPFLT = 00 Tamper 2 input falling edge and low level triggers a tamper detection event..
TAMP filter control register
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
0/4 fields covered.
Bits 0-2: Tamper sampling frequency Determines the frequency at which each of the TAMP_INx inputs are sampled..
Bits 3-4: TAMP_INx filter count These bits determines the number of consecutive samples at the specified level (TAMP*TRG) needed to activate a tamper event. TAMPFLT is valid for each of the TAMP_INx inputs..
Bits 5-6: TAMP_INx precharge duration These bit determines the duration of time during which the pull-up/is activated before each sample. TAMPPRCH is valid for each of the TAMP_INx inputs..
Bit 7: TAMP_INx pull-up disable This bit determines if each of the TAMPx pins are precharged before each sample..
TAMP interrupt enable register
Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified
0/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ITAMP6IE
rw |
ITAMP5IE
rw |
ITAMP4IE
rw |
ITAMP3IE
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TAMP2IE
rw |
TAMP1IE
rw |
Bit 0: Tamper 1 interrupt enable.
Bit 1: Tamper 2 interrupt enable.
Bit 18: Internal tamper 3 interrupt enable: LSE monitoring.
Bit 19: Internal tamper 4 interrupt enable: HSE monitoring.
Bit 20: Internal tamper 5 interrupt enable: RTC calendar overflow.
Bit 21: Internal tamper 6 interrupt enable: ST manufacturer readout.
TAMP status register
Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified
6/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ITAMP6F
r |
ITAMP5F
r |
ITAMP4F
r |
ITAMP3F
r |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TAMP2F
r |
TAMP1F
r |
Bit 0: TAMP1 detection flag This flag is set by hardware when a tamper detection event is detected on the TAMP1 input..
Bit 1: TAMP2 detection flag This flag is set by hardware when a tamper detection event is detected on the TAMP2 input..
Bit 18: LSE monitoring tamper detection flag This flag is set by hardware when a tamper detection event is detected on the internal tamper 3..
Bit 19: HSE monitoring tamper detection flag This flag is set by hardware when a tamper detection event is detected on the internal tamper 4..
Bit 20: RTC calendar overflow tamper detection flag This flag is set by hardware when a tamper detection event is detected on the internal tamper 5..
Bit 21: ST manufacturer readout tamper detection flag This flag is set by hardware when a tamper detection event is detected on the internal tamper 6..
TAMP masked interrupt status register
Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified
6/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ITAMP6MF
r |
ITAMP5MF
r |
ITAMP4MF
r |
ITAMP3MF
r |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TAMP2MF
r |
TAMP1MF
r |
Bit 0: TAMP1 interrupt masked flag This flag is set by hardware when the tamper 1 interrupt is raised..
Bit 1: TAMP2 interrupt masked flag This flag is set by hardware when the tamper 2 interrupt is raised..
Bit 18: LSE monitoring tamper interrupt masked flag This flag is set by hardware when the internal tamper 3 interrupt is raised..
Bit 19: HSE monitoring tamper interrupt masked flag This flag is set by hardware when the internal tamper 4 interrupt is raised..
Bit 20: RTC calendar overflow tamper interrupt masked flag This flag is set by hardware when the internal tamper 5 interrupt is raised..
Bit 21: ST manufacturer readout tamper interrupt masked flag This flag is set by hardware when the internal tamper 6 interrupt is raised..
TAMP status clear register
Offset: 0x3c, size: 32, reset: 0x00000000, access: Unspecified
0/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CITAMP6F
w |
CITAMP5F
w |
CITAMP4F
w |
CITAMP3F
w |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTAMP2F
w |
CTAMP1F
w |
Bit 0: Clear TAMP1 detection flag Writing 1 in this bit clears the TAMP1F bit in the TAMP_SR register..
Bit 1: Clear TAMP2 detection flag Writing 1 in this bit clears the TAMP2F bit in the TAMP_SR register..
Bit 18: Clear ITAMP3 detection flag Writing 1 in this bit clears the ITAMP3F bit in the TAMP_SR register..
Bit 19: Clear ITAMP4 detection flag Writing 1 in this bit clears the ITAMP4F bit in the TAMP_SR register..
Bit 20: Clear ITAMP5 detection flag Writing 1 in this bit clears the ITAMP5F bit in the TAMP_SR register..
Bit 21: Clear ITAMP6 detection flag Writing 1 in this bit clears the ITAMP6F bit in the TAMP_SR register..
TAMP backup 0 register
Offset: 0x100, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: The application can write or read data to and from these registers. They are powered-on by VBAT when VDD is switched off, so that they are not reset by System reset, and their contents remain valid when the device operates in low-power mode. In the default configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..
TAMP backup 1 register
Offset: 0x104, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: The application can write or read data to and from these registers. They are powered-on by VBAT when VDD is switched off, so that they are not reset by System reset, and their contents remain valid when the device operates in low-power mode. In the default configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..
TAMP backup 2 register
Offset: 0x108, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: The application can write or read data to and from these registers. They are powered-on by VBAT when VDD is switched off, so that they are not reset by System reset, and their contents remain valid when the device operates in low-power mode. In the default configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..
TAMP backup 3 register
Offset: 0x10c, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: The application can write or read data to and from these registers. They are powered-on by VBAT when VDD is switched off, so that they are not reset by System reset, and their contents remain valid when the device operates in low-power mode. In the default configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..
TAMP backup 4 register
Offset: 0x110, size: 32, reset: 0x00000000, access: Unspecified
0/1 fields covered.
Bits 0-31: The application can write or read data to and from these registers. They are powered-on by VBAT when VDD is switched off, so that they are not reset by System reset, and their contents remain valid when the device operates in low-power mode. In the default configuration this register is reset on a tamper detection event. It is forced to reset value as long as there is at least one internal or external tamper flag being set. This register is also reset when the readout protection (RDP) is disabled..
0x40012c00: Advanced-timers
51/190 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | SMCR | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Input | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Output | ||||||||||||||||||||||||||||||||
0x1c | CCMR2_Input | ||||||||||||||||||||||||||||||||
0x1c | CCMR2_Output | ||||||||||||||||||||||||||||||||
0x20 | CCER | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR | ||||||||||||||||||||||||||||||||
0x30 | RCR | ||||||||||||||||||||||||||||||||
0x34 | CCR[1] | ||||||||||||||||||||||||||||||||
0x38 | CCR[2] | ||||||||||||||||||||||||||||||||
0x3c | CCR[3] | ||||||||||||||||||||||||||||||||
0x40 | CCR[4] | ||||||||||||||||||||||||||||||||
0x44 | BDTR | ||||||||||||||||||||||||||||||||
0x48 | DCR | ||||||||||||||||||||||||||||||||
0x4c | DMAR | ||||||||||||||||||||||||||||||||
0x50 | OR1 | ||||||||||||||||||||||||||||||||
0x54 | CCMR3_Output | ||||||||||||||||||||||||||||||||
0x58 | CCR5 | ||||||||||||||||||||||||||||||||
0x5c | CCR6 | ||||||||||||||||||||||||||||||||
0x60 | AF1 | ||||||||||||||||||||||||||||||||
0x64 | AF2 | ||||||||||||||||||||||||||||||||
0x68 | TISEL |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
8/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UIFREMAP
rw |
CKD
rw |
ARPE
rw |
CMS
rw |
DIR
rw |
OPM
rw |
URS
rw |
UDIS
rw |
CEN
rw |
Bit 0: Counter enable Note: External clock, gated mode and encoder mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 4: Direction Note: This bit is read only when the timer is configured in Center-aligned mode or Encoder mode..
Allowed values:
0: Up: Counter used as upcounter
1: Down: Counter used as downcounter
Bits 5-6: Center-aligned mode selection Note: Switch from edge-aligned mode to center-aligned mode as long as the counter is enabled (CEN=1) is not allowed.
Allowed values:
0: EdgeAligned: The counter counts up or down depending on the direction bit
1: CenterAligned1: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting down.
2: CenterAligned2: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting up.
3: CenterAligned3: The counter counts up and down alternatively. Output compare interrupt flags are set both when the counter is counting up or down.
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and the dead-time and sampling clock (tDTS)used by the dead-time generators and the digital filters (ETR, TIx): Note: tDTS = 1/fDTS, tCK_INT = 1/fCK_INT..
Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT
Bit 11: UIF status bit remapping.
control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
9/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MMS2
rw |
OIS[6]
rw |
OIS[5]
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OIS[4]
rw |
OIS[3]N
rw |
OIS[3]
rw |
OIS[2]N
rw |
OIS[2]
rw |
OIS[1]N
rw |
OIS[1]
rw |
TI1S
rw |
MMS
rw |
CCDS
rw |
CCUS
rw |
CCPC
rw |
Bit 0: Capture/compare preloaded control Note: This bit acts only on channels that have a complementary output..
Bit 2: Capture/compare control update selection Note: This bit acts only on channels that have a complementary output..
Bit 3: Capture/compare DMA selection.
Bits 4-6: Master mode selection These bits allow selected information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows: Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..
Bit 7: TI1 selection.
Bit 8: Output Idle state (OC1 output).
Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0
Bit 9: Output Idle state (OC1N output).
Allowed values:
0: Reset: OCxN=0 after a dead-time when MOE=0
1: Set: OCxN=1 after a dead-time when MOE=0
Bit 10: Output Idle state (OC2 output).
Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0
Bit 11: Output Idle state (OC2N output).
Allowed values:
0: Reset: OCxN=0 after a dead-time when MOE=0
1: Set: OCxN=1 after a dead-time when MOE=0
Bit 12: Output Idle state (OC3 output).
Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0
Bit 13: Output Idle state (OC3N output).
Allowed values:
0: Reset: OCxN=0 after a dead-time when MOE=0
1: Set: OCxN=1 after a dead-time when MOE=0
Bit 14: Output Idle state (OC4 output).
Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0
Bit 16: Output Idle state (OC5 output).
Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0
Bit 18: Output Idle state (OC6 output).
Allowed values:
0: Reset: OCx=0 (after a dead-time if OCx(N) is implemented) when MOE=0
1: Set: OCx=1 (after a dead-time if OCx(N) is implemented) when MOE=0
Bits 20-23: Master mode selection 2 These bits allow the information to be sent to ADC for synchronization (TRGO2) to be selected. The combination is as follows: Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..
slave mode control register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/10 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TS2
rw |
SMS2
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ETP
rw |
ECE
rw |
ETPS
rw |
ETF
rw |
MSM
rw |
TS1
rw |
OCCS
rw |
SMS1
rw |
Bits 0-2: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS=00100). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bit 3: OCREF clear selection This bit is used to select the OCREF clear source..
Bits 4-6: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
Bit 7: Master/slave mode.
Bits 8-11: External trigger filter This bit-field then defines the frequency used to sample ETRP signal and the length of the digital filter applied to ETRP. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output:.
Bits 12-13: External trigger prescaler External trigger signal ETRP frequency must be at most 1/4 of fCK_INT frequency. A prescaler can be enabled to reduce ETRP frequency. It is useful when inputting fast external clocks..
Bit 14: External clock enable This bit enables External clock mode 2. Note: Setting the ECE bit has the same effect as selecting external clock mode 1 with TRGI connected to ETRF (SMS=111 and TS=00111). It is possible to simultaneously use external clock mode 2 with the following slave modes: reset mode, gated mode and trigger mode. Nevertheless, TRGI must not be connected to ETRF in this case (TS bits must not be 00111). If external clock mode 1 and external clock mode 2 are enabled at the same time, the external clock input is ETRF..
Bit 15: External trigger polarity This bit selects whether ETR or ETR is used for trigger operations.
Bit 16: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS=00100). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bits 20-21: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
1/15 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDE
rw |
COMDE
rw |
CC[4]DE
rw |
CC[3]DE
rw |
CC[2]DE
rw |
CC[1]DE
rw |
UDE
rw |
BIE
rw |
TIE
rw |
COMIE
rw |
CC[4]IE
rw |
CC[3]IE
rw |
CC[2]IE
rw |
CC[1]IE
rw |
UIE
rw |
Bit 0: Update interrupt enable.
Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled
Bit 1: Capture/Compare 1 interrupt enable.
Bit 2: Capture/Compare 2 interrupt enable.
Bit 3: Capture/Compare 3 interrupt enable.
Bit 4: Capture/Compare 4 interrupt enable.
Bit 5: COM interrupt enable.
Bit 6: Trigger interrupt enable.
Bit 7: Break interrupt enable.
Bit 8: Update DMA request enable.
Bit 9: Capture/Compare 1 DMA request enable.
Bit 10: Capture/Compare 2 DMA request enable.
Bit 11: Capture/Compare 3 DMA request enable.
Bit 12: Capture/Compare 4 DMA request enable.
Bit 13: COM DMA request enable.
Bit 14: Trigger DMA request enable.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC6IF
rw |
CC5IF
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SBIF
rw |
CC[4]OF
rw |
CC[3]OF
rw |
CC[2]OF
rw |
CC[1]OF
rw |
B2IF
rw |
BIF
rw |
TIF
rw |
COMIF
rw |
CC[4]IF
rw |
CC[3]IF
rw |
CC[2]IF
rw |
CC[1]IF
rw |
UIF
rw |
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow or underflow regarding the repetition counter value (update if repetition counter = 0) and if the UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by a trigger event (refer to control register (TIM1_SMCRTIMx_SMCR)N/A), if URS=0 and UDIS=0 in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
Bit 1: Capture/compare 1 interrupt flag.
Bit 2: Capture/compare 2 interrupt flag.
Bit 3: Capture/compare 3 interrupt flag.
Bit 4: Capture/compare 4 interrupt flag.
Bit 5: COM interrupt flag.
Bit 6: Trigger interrupt flag This flag is set by hardware on the TRG trigger event (active edge detected on TRGI input when the slave mode controller is enabled in all modes but gated mode. It is set when the counter starts or stops when gated mode is selected. It is cleared by software..
Bit 7: Break interrupt flag This flag is set by hardware as soon as the break input goes active. It can be cleared by software if the break input is not active..
Bit 8: Break 2 interrupt flag This flag is set by hardware as soon as the break 2 input goes active. It can be cleared by software if the break 2 input is not active..
Bit 9: Capture/Compare 1 overcapture flag.
Bit 10: Capture/Compare 2 overcapture flag.
Bit 11: Capture/Compare 3 overcapture flag.
Bit 12: Capture/Compare 4 overcapture flag.
Bit 13: System Break interrupt flag This flag is set by hardware as soon as the system break input goes active. It can be cleared by software if the system break input is not active. This flag must be reset to re-start PWM operation..
Bit 16: Compare 5 interrupt flag Refer to CC1IF description (Note: Channel 5 can only be configured as output).
Bit 17: Compare 6 interrupt flag Refer to CC1IF description (Note: Channel 6 can only be configured as output).
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
B2G
w |
BG
w |
TG
w |
COMG
w |
CC[4]G
w |
CC[3]G
w |
CC[2]G
w |
CC[1]G
w |
UG
w |
Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..
Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.
Bit 1: Capture/compare 1 generation.
Bit 2: Capture/compare 2 generation.
Bit 3: Capture/compare 3 generation.
Bit 4: Capture/compare 4 generation.
Bit 5: Capture/Compare control update generation This bit can be set by software, it is automatically cleared by hardware Note: This bit acts only on channels having a complementary output..
Bit 6: Trigger generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
Bit 7: Break generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
Bit 8: Break 2 generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
capture/compare mode register 1 (output mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/6 fields covered.
capture/compare mode register 1 (output mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
3/12 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[2]M_3
rw |
OC1M2
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[2]CE
rw |
OC[2]M
rw |
OC[2]PE
rw |
OC[2]FE
rw |
CC[2]S
rw |
OC[1]CE
rw |
OC[1]M
rw |
OC[1]PE
rw |
OC[1]FE
rw |
CC[1]S
rw |
Bits 0-1: Capture/Compare 1 selection.
Bit 2: Output compare 1 fast enable.
Bit 3: Output compare 1 preload enable.
Bits 4-6: Output compare 1 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 7: Output compare 1 clear enable.
Bits 8-9: Capture/Compare 2 selection.
Bit 10: Output compare 2 fast enable.
Bit 11: Output compare 2 preload enable.
Bits 12-14: Output compare 2 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 15: Output compare 2 clear enable.
Bit 16: Output Compare 1 mode These bits define the behavior of the output reference signal OC1REF from which OC1 and OC1N are derived. OC1REF is active high whereas OC1 and OC1N active level depends on CC1P and CC1NP bits. Note: These bits can not be modified as long as LOCK level 3 has been programmed (LOCK bits in TIMx_BDTR register) and CC1S='00' (the channel is configured in output). Note: In PWM mode, the OCREF level changes only when the result of the comparison changes or when the output compare mode switches from 'frozen' mode to 'PWM' mode. Note: On channels having a complementary output, this bit field is preloaded. If the CCPC bit is set in the TIMx_CR2 register then the OC1M active bits take the new value from the preloaded bits only when a COM event is generated. Note: The OC1M[3] bit is not contiguous, located in bit 16..
Bit 24: Output compare 2 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare mode register 2 (output mode)
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
0/6 fields covered.
capture/compare mode register 2 (output mode)
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
4/12 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[4]M_3
rw |
OC[3]M_3
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[4]CE
rw |
OC[4]M
rw |
OC[4]PE
rw |
OC[4]FE
rw |
CC[4]S
rw |
OC[3]CE
rw |
OC[3]M
rw |
OC[3]PE
rw |
OC[3]FE
rw |
CC[3]S
rw |
Bits 0-1: Capture/Compare 3 selection.
Bit 2: Output compare 3 fast enable.
Bit 3: Output compare 3 preload enable.
Bits 4-6: Output compare 3 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 7: Output compare 3 clear enable.
Bits 8-9: Capture/Compare 4 selection.
Bit 10: Output compare 4 fast enable.
Bit 11: Output compare 4 preload enable.
Bits 12-14: Output compare 4 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 15: Output compare 4 clear enable.
Bit 16: Output compare 3 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
Bit 24: Output compare 4 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare enable register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/19 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC[6]P
rw |
CC[6]E
rw |
CC[5]P
rw |
CC[5]E
rw |
||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CC[4]NP
rw |
CC[4]P
rw |
CC[4]E
rw |
CC[3]NP
rw |
CC[3]NE
rw |
CC[3]P
rw |
CC[3]E
rw |
CC[2]NP
rw |
CC[2]NE
rw |
CC[2]P
rw |
CC[2]E
rw |
CC[1]NP
rw |
CC[1]NE
rw |
CC[1]P
rw |
CC[1]E
rw |
Bit 0: Capture/Compare 1 output enable.
Bit 1: Capture/Compare 1 output Polarity.
Bit 2: Capture/Compare 1 complementary output enable.
Bit 3: Capture/Compare 1 output Polarity.
Bit 4: Capture/Compare 2 output enable.
Bit 5: Capture/Compare 2 output Polarity.
Bit 6: Capture/Compare 2 complementary output enable.
Bit 7: Capture/Compare 2 output Polarity.
Bit 8: Capture/Compare 3 output enable.
Bit 9: Capture/Compare 3 output Polarity.
Bit 10: Capture/Compare 3 complementary output enable.
Bit 11: Capture/Compare 3 output Polarity.
Bit 12: Capture/Compare 4 output enable.
Bit 13: Capture/Compare 4 output Polarity.
Bit 15: Capture/Compare 4 output Polarity.
Bit 16: Capture/Compare 5 output enable.
Bit 17: Capture/Compare 5 output Polarity.
Bit 20: Capture/Compare 6 output enable.
Bit 21: Capture/Compare 6 output Polarity.
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
2/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
Bits 0-15: Prescaler value The counter clock frequency (CK_CNT) is equal to fCK_PSC / (PSC[15:0] + 1). PSC contains the value to be loaded in the active prescaler register at each update event (including when the counter is cleared through UG bit of TIMx_EGR register or through trigger controller when configured in 'reset mode')..
Allowed values: 0x0-0xffff
auto-reload register
Offset: 0x2c, size: 32, reset: 0x0000FFFF, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARR
rw |
repetition counter register
Offset: 0x30, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
REP
rw |
capture/compare register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
capture/compare register
Offset: 0x38, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
capture/compare register
Offset: 0x3c, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
capture/compare register
Offset: 0x40, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
break and dead-time register
Offset: 0x44, size: 32, reset: 0x00000000, access: read-write
10/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BK2BID
rw |
BKBID
rw |
BK2DSRM
rw |
BKDSRM
rw |
BK2P
rw |
BK2E
rw |
BK2F
rw |
BKF
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MOE
rw |
AOE
rw |
BKP
rw |
BKE
rw |
OSSR
rw |
OSSI
rw |
LOCK
rw |
DTG
rw |
Bits 0-7: Dead-time generator setup.
Allowed values: 0x0-0xff
Bits 8-9: Lock configuration These bits offer a write protection against software errors. Note: The LOCK bits can be written only once after the reset. Once the TIMx_BDTR register has been written, their content is frozen until the next reset..
Allowed values:
0: Off: No bit is write protected
1: Level1: Any bits except MOE, OSSR, OSSI and LOCK in TIMx_BDTR register, OISx and OISxN bits in TIMx_CR2 register can no longer be written
2: Level2: LOCK Level 1 + CC Polarity bits (CCxP/CCxNP bits in TIMx_CCER register, as long as the related channel is configured in output through the CCxS bits) as well as OSSR and OSSI bits can no longer be written
3: Level3: LOCK Level 2 + CC Control bits (OCxM and OCxPE bits in TIMx_CCMRx registers, as long as the related channel is configured in output through the CCxS bits) can no longer be written
Bit 10: Off-state selection for Idle mode This bit is used when MOE=0 due to a break event or by a software write, on channels configured as outputs. See OC/OCN enable description for more details (enable register (TIM1_CCERTIMx_CCER)N/A). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..
Allowed values:
0: Disabled: When inactive, OC/OCN outputs are disabled
1: IdleLevel: When inactive, OC/OCN outputs are forced to idle level
Bit 11: Off-state selection for Run mode This bit is used when MOE=1 on channels having a complementary output which are configured as outputs. OSSR is not implemented if no complementary output is implemented in the timer. See OC/OCN enable description for more details (enable register (TIM1_CCERTIMx_CCER)N/A). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..
Allowed values:
0: Disabled: When inactive, OC/OCN outputs are disabled
1: IdleLevel: When inactive, OC/OCN outputs are enabled with their inactive level
Bit 12: Break enable This bit enables the complete break protection (including all sources connected to bk_acth and BKIN sources, as per ). Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Allowed values:
0: Disabled: Break function x disabled
1: Enabled: Break function x disabled
Bit 13: Break polarity Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Allowed values:
0: ActiveLow: Break input BRKx is active low
1: ActiveHigh: Break input BRKx is active high
Bit 14: Automatic output enable Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Allowed values:
0: Manual: MOE can be set only by software
1: Automatic: MOE can be set by software or automatically at the next update event (if none of the break inputs BRK and BRK2 is active)
Bit 15: Main output enable This bit is cleared asynchronously by hardware as soon as one of the break inputs is active (BRK or BRK2). It is set by software or automatically depending on the AOE bit. It is acting only on the channels which are configured in output. In response to a break event or if MOE is written to 0: OC and OCN outputs are disabled or forced to idle state depending on the OSSI bit. See OC/OCN enable description for more details (enable register (TIM1_CCERTIMx_CCER)N/A)..
Allowed values:
0: DisabledIdle: OC/OCN are disabled or forced idle depending on OSSI
1: Enabled: OC/OCN are enabled if CCxE/CCxNE are set
Bits 16-19: Break filter This bit-field defines the frequency used to sample BRK input and the length of the digital filter applied to BRK. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output: Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bits 20-23: Break 2 filter This bit-field defines the frequency used to sample BRK2 input and the length of the digital filter applied to BRK2. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output: Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 24: Break 2 enable Note: The BRK2 must only be used with OSSR = OSSI = 1. Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Allowed values:
0: Disabled: Break function x disabled
1: Enabled: Break function x disabled
Bit 25: Break 2 polarity Note: This bit cannot be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Allowed values:
0: ActiveLow: Break input BRKx is active low
1: ActiveHigh: Break input BRKx is active high
Bit 26: Break Disarm This bit is cleared by hardware when no break source is active. The BKDSRM bit must be set by software to release the bidirectional output control (open-drain output in Hi-Z state) and then be polled it until it is reset by hardware, indicating that the fault condition has disappeared. Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 27: Break2 Disarm Refer to BKDSRM description.
Bit 28: Break Bidirectional In the bidirectional mode (BKBID bit set to 1), the break input is configured both in input mode and in open drain output mode. Any active break event asserts a low logic level on the Break input to indicate an internal break event to external devices. Note: This bit cannot be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 29: Break2 bidirectional Refer to BKBID description.
DMA control register
Offset: 0x48, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-4: DMA base address This 5-bits vector defines the base-address for DMA transfers (when read/write access are done through the TIMx_DMAR address). DBA is defined as an offset starting from the address of the TIMx_CR1 register. Example: ....
Bits 8-12: DMA burst length This 5-bit vector defines the length of DMA transfers (the timer recognizes a burst transfer when a read or a write access is done to the TIMx_DMAR address), i.e. the number of transfers. Transfers can be in half-words or in bytes (see example below). ... Example: Let us consider the following transfer: DBL = 7 bytes & DBA = TIMx_CR1. If DBL = 7 bytes and DBA = TIMx_CR1 represents the address of the byte to be transferred, the address of the transfer should be given by the following equation: (TIMx_CR1 address) + DBA + (DMA index), where DMA index = DBL In this example, 7 bytes are added to (TIMx_CR1 address) + DBA, which gives us the address from/to which the data is copied. In this case, the transfer is done to 7 registers starting from the following address: (TIMx_CR1 address) + DBA According to the configuration of the DMA Data Size, several cases may occur: If the DMA Data Size is configured in half-words, 16-bit data is transferred to each of the 7 registers. If the DMA Data Size is configured in bytes, the data is also transferred to 7 registers: the first register contains the first MSB byte, the second register, the first LSB byte and so on. So with the transfer Timer, one also has to specify the size of data transferred by DMA..
DMA address for full transfer
Offset: 0x4c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMAB
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DMAB
rw |
Bits 0-31: DMA register for burst accesses A read or write operation to the DMAR register accesses the register located at the address (TIMx_CR1 address) + (DBA + DMA index) x 4 where TIMx_CR1 address is the address of the control register 1, DBA is the DMA base address configured in TIMx_DCR register, DMA index is automatically controlled by the DMA transfer, and ranges from 0 to DBL (DBL configured in TIMx_DCR)..
option register 1
Offset: 0x50, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OCREF_CLR
rw |
capture/compare mode register 2 (output mode)
Offset: 0x54, size: 32, reset: 0x00000000, access: read-write
4/10 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[6]M_3
rw |
OC[5]M_3
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[6]CE
rw |
OC[6]M
rw |
OC[6]PE
rw |
OC[6]FE
rw |
OC[5]CE
rw |
OC[5]M
rw |
OC[5]PE
rw |
OC[5]FE
rw |
Bit 2: Output compare 5 fast enable.
Bit 3: Output compare 5 preload enable.
Bits 4-6: Output compare 5 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 7: Output compare 5 clear enable.
Bit 10: Output compare 6 fast enable.
Bit 11: Output compare 6 preload enable.
Bits 12-14: Output compare 6 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 15: Output compare 6 clear enable.
Bit 16: Output compare 5 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
Bit 24: Output compare 6 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare register
Offset: 0x58, size: 32, reset: 0x00000000, access: read-write
1/4 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
GC5C3
rw |
GC5C2
rw |
GC5C1
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CCR
rw |
Bits 0-15: Capture/Compare value.
Allowed values: 0x0-0xffff
Bit 29: Group Channel 5 and Channel 1 Distortion on Channel 1 output: This bit can either have immediate effect or be preloaded and taken into account after an update event (if preload feature is selected in TIMxCCMR1). Note: it is also possible to apply this distortion on combined PWM signals..
Bit 30: Group Channel 5 and Channel 2 Distortion on Channel 2 output: This bit can either have immediate effect or be preloaded and taken into account after an update event (if preload feature is selected in TIMxCCMR1). Note: it is also possible to apply this distortion on combined PWM signals..
Bit 31: Group Channel 5 and Channel 3 Distortion on Channel 3 output: This bit can either have immediate effect or be preloaded and taken into account after an update event (if preload feature is selected in TIMxCCMR2). Note: it is also possible to apply this distortion on combined PWM signals..
capture/compare register
Offset: 0x5c, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
DMA address for full transfer
Offset: 0x60, size: 32, reset: 0x00000001, access: read-write
0/7 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ETRSEL
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ETRSEL
rw |
BKCMP2P
rw |
BKCMP1P
rw |
BKINP
rw |
BKCMP2E
rw |
BKCMP1E
rw |
BKINE
rw |
Bit 0: BRK BKIN input enable This bit enables the BKIN alternate function input for the timer's BRK input. BKIN input is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 1: BRK COMP1 enable This bit enables the COMP1 for the timer's BRK input. COMP1 output is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 2: BRK COMP2 enable This bit enables the COMP2 for the timer's BRK input. COMP2 output is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 9: BRK BKIN input polarity This bit selects the BKIN alternate function input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 10: BRK COMP1 input polarity This bit selects the COMP1 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 11: BRK COMP2 input polarity This bit selects the COMP2 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bits 14-17: ETR source selection These bits select the ETR input source. Others: Reserved Note: These bits can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
DMA address for full transfer
Offset: 0x64, size: 32, reset: 0x00000001, access: read-write
0/6 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BK2CMP2P
rw |
BK2CMP1P
rw |
BK2INP
rw |
BK2CMP2E
rw |
BK2CMP1E
rw |
BK2INE
rw |
Bit 0: BRK2 BKIN input enable This bit enables the BKIN2 alternate function input for the timer's BRK2 input. BKIN2 input is 'ORed' with the other BRK2 sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 1: BRK2 COMP1 enable This bit enables the COMP1 for the timer's BRK2 input. COMP1 output is 'ORed' with the other BRK2 sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 2: BRK2 COMP2 enable This bit enables the COMP2 for the timer's BRK2 input. COMP2 output is 'ORed' with the other BRK2 sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 9: BRK2 BKIN2 input polarity This bit selects the BKIN2 alternate function input sensitivity. It must be programmed together with the BK2P polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 10: BRK2 COMP1 input polarity This bit selects the COMP1 input sensitivity. It must be programmed together with the BK2P polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 11: BRK2 COMP2 input polarity This bit selects the COMP2 input sensitivity. It must be programmed together with the BK2P polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
0x40002000: General purpose timers
11/31 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Input | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Output | ||||||||||||||||||||||||||||||||
0x20 | CCER | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR | ||||||||||||||||||||||||||||||||
0x34 | CCR[1] | ||||||||||||||||||||||||||||||||
0x68 | TISEL |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
6/7 fields covered.
Bit 0: Counter enable Note: External clock and gated mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable update interrupt (UEV) event generation. Counter overflow Setting the UG bit. Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the update interrupt (UEV) sources. Counter overflow Setting the UG bit.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One-pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and sampling clock used by the digital filters (TIx),.
Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT
Bit 11: UIF status bit remapping.
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
1/2 fields covered.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/3 fields covered.
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow and if UDIS='0' in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS='0' and UDIS='0' in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
Bit 1: Capture/compare 1 interrupt flag.
Bit 9: Capture/Compare 1 overcapture flag.
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/2 fields covered.
capture/compare mode register 1 (input mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/3 fields covered.
capture/compare mode register 1 (output mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
1/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[1]M_3
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[1]M
rw |
OC[1]PE
rw |
OC[1]FE
rw |
CC[1]S
rw |
Bits 0-1: Capture/Compare 1 selection.
Bit 2: Output compare 1 fast enable.
Bit 3: Output compare 1 preload enable.
Bits 4-6: Output compare 1 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy
4: ForceInactive: OCyREF is forced low
5: ForceActive: OCyREF is forced high
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active
7: PwmMode2: Inversely to PwmMode1
Bit 16: Output compare 1 mode, bit 3.
capture/compare enable register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/3 fields covered.
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
auto-reload register
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARR
rw |
capture/compare register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
TIM timer input selection register
Offset: 0x68, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TI1SEL
rw |
0x40014000: General purpose timers
13/99 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | SMCR | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Input | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Output | ||||||||||||||||||||||||||||||||
0x20 | CCER | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR | ||||||||||||||||||||||||||||||||
0x30 | RCR | ||||||||||||||||||||||||||||||||
0x34 | CCR[1] | ||||||||||||||||||||||||||||||||
0x38 | CCR[2] | ||||||||||||||||||||||||||||||||
0x44 | BDTR | ||||||||||||||||||||||||||||||||
0x48 | DCR | ||||||||||||||||||||||||||||||||
0x4c | DMAR | ||||||||||||||||||||||||||||||||
0x60 | AF1 | ||||||||||||||||||||||||||||||||
0x68 | TISEL |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
6/7 fields covered.
Bit 0: Counter enable Note: External clock and gated mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One-pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bits 8-9: Clock division This bitfield indicates the division ratio between the timer clock (CK_INT) frequency and the dead-time and sampling clock (tDTS) used by the dead-time generators and the digital filters (TIx).
Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT
Bit 11: UIF status bit remapping.
control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/8 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OIS2
rw |
OIS1N
rw |
OIS1
rw |
TI1S
rw |
MMS
rw |
CCDS
rw |
CCUS
rw |
CCPC
rw |
Bit 0: Capture/compare preloaded control Note: This bit acts only on channels that have a complementary output..
Bit 2: Capture/compare control update selection Note: This bit acts only on channels that have a complementary output..
Bit 3: Capture/compare DMA selection.
Bits 4-6: Master mode selection These bits allow to select the information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows:.
Bit 7: TI1 selection.
Bit 8: Output Idle state 1 (OC1 output) Note: This bit can not be modified as long as LOCK level 1, 2 or 3 has been programmed (LOCK bits in TIM15_BDTR register)..
Bit 9: Output Idle state 1 (OC1N output) Note: This bit can not be modified as long as LOCK level 1, 2 or 3 has been programmed (LOCK bits in TIM15_BDTR register)..
Bit 10: Output idle state 2 (OC2 output) Note: This bit cannot be modified as long as LOCK level 1, 2 or 3 has been programmed (LOCK bits in the TIM15_BDTR register)..
slave mode control register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TS2
rw |
SMS2
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MSM
rw |
TS1
rw |
SMS1
rw |
Bits 0-2: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. Other codes: reserved. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS='00100'). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bits 4-6: Trigger selection This bit field selects the trigger input to be used to synchronize the counter. Other: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
Bit 7: Master/slave mode.
Bit 16: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. Other codes: reserved. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS='00100'). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bits 20-21: Trigger selection This bit field selects the trigger input to be used to synchronize the counter. Other: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
1/11 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDE
rw |
COMDE
rw |
CC[2]DE
rw |
CC[1]DE
rw |
UDE
rw |
BIE
rw |
TIE
rw |
COMIE
rw |
CC[2]IE
rw |
CC[1]IE
rw |
UIE
rw |
Bit 0: Update interrupt enable.
Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled
Bit 1: Capture/Compare 1 interrupt enable.
Bit 2: Capture/Compare 2 interrupt enable.
Bit 5: COM interrupt enable.
Bit 6: Trigger interrupt enable.
Bit 7: Break interrupt enable.
Bit 8: Update DMA request enable.
Bit 9: Capture/Compare 1 DMA request enable.
Bit 10: Capture/Compare 2 DMA request enable.
Bit 13: COM DMA request enable.
Bit 14: Trigger DMA request enable.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/8 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC[2]OF
rw |
CC[1]OF
rw |
BIF
rw |
TIF
rw |
COMIF
rw |
CC[2]IF
rw |
CC[1]IF
rw |
UIF
rw |
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow regarding the repetition counter value (update if repetition counter = 0) and if the UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by a trigger event (refer to control register (TIM15_SMCR)), if URS=0 and UDIS=0 in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
Bit 1: Capture/compare 1 interrupt flag.
Bit 2: Capture/compare 2 interrupt flag.
Bit 5: COM interrupt flag..
Bit 6: Trigger interrupt flag This flag is set by hardware on the TRG trigger event (active edge detected on TRGI input when the slave mode controller is enabled in all modes but gated mode, both edges in case gated mode is selected). It is set when the counter starts or stops when gated mode is selected. It is cleared by software..
Bit 7: Break interrupt flag This flag is set by hardware as soon as the break input goes active. It can be cleared by software if the break input is not active..
Bit 9: Capture/Compare 1 overcapture flag.
Bit 10: Capture/Compare 2 overcapture flag.
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/6 fields covered.
Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..
Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.
Bit 1: Capture/compare 1 generation.
Bit 2: Capture/compare 2 generation.
Bit 5: Capture/Compare control update generation This bit can be set by software, it is automatically cleared by hardware. Note: This bit acts only on channels that have a complementary output..
Bit 6: Trigger generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
Bit 7: Break generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
capture/compare mode register 1 (input mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/6 fields covered.
capture/compare mode register (output mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
2/10 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[2]M_3
rw |
OC1M2
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[2]M
rw |
OC[2]PE
rw |
OC[2]FE
rw |
CC[2]S
rw |
OC1M1
rw |
OC[1]PE
rw |
OC[1]FE
rw |
CC[1]S
rw |
Bits 0-1: Capture/Compare 1 selection.
Bit 2: Output compare 1 fast enable.
Bit 3: Output compare 1 preload enable.
Bits 4-6: Output Compare 1 mode These bits define the behavior of the output reference signal OC1REF from which OC1 and OC1N are derived. OC1REF is active high whereas OC1 and OC1N active level depends on CC1P and CC1NP bits. Note: These bits can not be modified as long as LOCK level 3 has been programmed (LOCK bits in TIMx_BDTR register) and CC1S='00' (the channel is configured in output). In PWM mode, the OCREF level changes only when the result of the comparison changes or when the output compare mode switches from 'frozen' mode to 'PWM' mode. On channels that have a complementary output, this bit field is preloaded. If the CCPC bit is set in the TIMx_CR2 register then the OC1M active bits take the new value from the preloaded bits only when a COM event is generated. The OC1M[3] bit is not contiguous, located in bit 16..
Bits 8-9: Capture/Compare 2 selection.
Bit 10: Output compare 2 fast enable.
Bit 11: Output compare 2 preload enable.
Bits 12-14: Output compare 2 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / Reserved
7: PwmMode2: Inversely to PwmMode1 / Reserved
Bit 16: Output Compare 1 mode These bits define the behavior of the output reference signal OC1REF from which OC1 and OC1N are derived. OC1REF is active high whereas OC1 and OC1N active level depends on CC1P and CC1NP bits. Note: These bits can not be modified as long as LOCK level 3 has been programmed (LOCK bits in TIMx_BDTR register) and CC1S='00' (the channel is configured in output). In PWM mode, the OCREF level changes only when the result of the comparison changes or when the output compare mode switches from 'frozen' mode to 'PWM' mode. On channels that have a complementary output, this bit field is preloaded. If the CCPC bit is set in the TIMx_CR2 register then the OC1M active bits take the new value from the preloaded bits only when a COM event is generated. The OC1M[3] bit is not contiguous, located in bit 16..
Bit 24: Output compare 2 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare enable register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/7 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC[2]NP
rw |
CC[2]P
rw |
CC[2]E
rw |
CC[1]NP
rw |
CC[1]NE
rw |
CC[1]P
rw |
CC[1]E
rw |
Bit 0: Capture/Compare 1 output enable.
Bit 1: Capture/Compare 1 output Polarity.
Bit 2: Capture/Compare 1 complementary output enable.
Bit 3: Capture/Compare 1 output Polarity.
Bit 4: Capture/Compare 2 output enable.
Bit 5: Capture/Compare 2 output Polarity.
Bit 7: Capture/Compare 2 output Polarity.
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
1/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
auto-reload register
Offset: 0x2c, size: 32, reset: 0x0000FFFF, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARR
rw |
repetition counter register
Offset: 0x30, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
REP
rw |
capture/compare register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
capture/compare register
Offset: 0x38, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
break and dead-time register
Offset: 0x44, size: 32, reset: 0x00000000, access: read-write
0/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BKBID
rw |
BKDSRM
rw |
BKF
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MOE
rw |
AOE
rw |
BKP
rw |
BKE
rw |
OSSR
rw |
OSSI
rw |
LOCK
rw |
DTG
rw |
Bits 0-7: Dead-time generator setup.
Bits 8-9: Lock configuration These bits offer a write protection against software errors. Note: The LOCK bits can be written only once after the reset. Once the TIMx_BDTR register has been written, their content is frozen until the next reset..
Bit 10: Off-state selection for Idle mode This bit is used when MOE=0 on channels configured as outputs. See OC/OCN enable description for more details (enable register (TIM15_CCER) on page818). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 11: Off-state selection for Run mode This bit is used when MOE=1 on channels that have a complementary output which are configured as outputs. OSSR is not implemented if no complementary output is implemented in the timer. See OC/OCN enable description for more details (enable register (TIM15_CCER) on page818). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 12: Break enable 1; Break inputs (BRK and CCS clock failure event) enabled This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 13: Break polarity Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 14: Automatic output enable Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 15: Main output enable This bit is cleared asynchronously by hardware as soon as the break input is active. It is set by software or automatically depending on the AOE bit. It is acting only on the channels which are configured in output. See OC/OCN enable description for more details (enable register (TIM15_CCER) on page818)..
Bits 16-19: Break filter This bit-field defines the frequency used to sample the BRK input signal and the length of the digital filter applied to BRK. The digital filter is made of an event counter in which N events are needed to validate a transition on the output: Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 26: Break Disarm This bit is cleared by hardware when no break source is active. The BKDSRM bit must be set by software to release the bidirectional output control (open-drain output in Hi-Z state) and then be polled it until it is reset by hardware, indicating that the fault condition has disappeared. Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 28: Break Bidirectional In the bidirectional mode (BKBID bit set to 1), the break input is configured both in input mode and in open drain output mode. Any active break event asserts a low logic level on the Break input to indicate an internal break event to external devices. Note: This bit cannot be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
DMA control register
Offset: 0x48, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-4: DMA base address This 5-bit field defines the base-address for DMA transfers (when read/write access are done through the TIMx_DMAR address). DBA is defined as an offset starting from the address of the TIMx_CR1 register. Example: ....
Bits 8-12: DMA burst length This 5-bit field defines the length of DMA transfers (the timer recognizes a burst transfer when a read or a write access is done to the TIMx_DMAR address). ....
DMA address for full transfer
Offset: 0x4c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMAB
rw |
TIM15 alternate register 1
Offset: 0x60, size: 32, reset: 0x00000001, access: read-write
0/8 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BKCMP3P
rw |
BKCMP2P
rw |
BKCMP1P
rw |
BKINP
rw |
BKCMP3E
rw |
BKCMP2E
rw |
BKCMP1E
rw |
BKINE
rw |
Bit 0: BRK BKIN input enable This bit enables the BKIN alternate function input for the timer's BRK input. BKIN input is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 1: BRK COMP1 enable This bit enables the COMP1 for the timer's BRK input. COMP1 output is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 2: BRK COMP2 enable This bit enables the COMP2 for the timer's BRK input. COMP2 output is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 3: BRK COMP3 enable This bit enables the COMP3 for the timer's BRK input. COMP3 output is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 9: BRK BKIN input polarity This bit selects the BKIN alternate function input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 10: BRK COMP1 input polarity This bit selects the COMP1 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 11: BRK COMP2 input polarity This bit selects the COMP2 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 12: BRK COMP3 input polarity This bit selects the COMP3 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
0x40014400: General purpose timers
12/66 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Input | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Output | ||||||||||||||||||||||||||||||||
0x20 | CCER | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR | ||||||||||||||||||||||||||||||||
0x30 | RCR | ||||||||||||||||||||||||||||||||
0x34 | CCR[1] | ||||||||||||||||||||||||||||||||
0x44 | BDTR | ||||||||||||||||||||||||||||||||
0x48 | DCR | ||||||||||||||||||||||||||||||||
0x4c | DMAR | ||||||||||||||||||||||||||||||||
0x60 | AF1 | ||||||||||||||||||||||||||||||||
0x68 | TISEL |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
6/7 fields covered.
Bit 0: Counter enable Note: External clock and gated mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and the dead-time and sampling clock (tDTS)used by the dead-time generators and the digital filters (TIx),.
Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT
Bit 11: UIF status bit remapping.
control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
Bit 0: Capture/compare preloaded control Note: This bit acts only on channels that have a complementary output..
Bit 2: Capture/compare control update selection Note: This bit acts only on channels that have a complementary output..
Bit 3: Capture/compare DMA selection.
Bit 8: Output Idle state 1 (OC1 output) Note: This bit can not be modified as long as LOCK level 1, 2 or 3 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 9: Output Idle state 1 (OC1N output) Note: This bit can not be modified as long as LOCK level 1, 2 or 3 has been programmed (LOCK bits in TIMx_BDTR register)..
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
1/6 fields covered.
Bit 0: Update interrupt enable.
Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled
Bit 1: Capture/Compare 1 interrupt enable.
Bit 5: COM interrupt enable.
Bit 7: Break interrupt enable.
Bit 8: Update DMA request enable.
Bit 9: Capture/Compare 1 DMA request enable.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/5 fields covered.
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow regarding the repetition counter value (update if repetition counter = 0) and if the UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
Bit 1: Capture/compare 1 interrupt flag.
Bit 5: COM interrupt flag.
Bit 7: Break interrupt flag This flag is set by hardware as soon as the break input goes active. It can be cleared by software if the break input is not active..
Bit 9: Capture/Compare 1 overcapture flag.
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/4 fields covered.
Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..
Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.
Bit 1: Capture/compare 1 generation.
Bit 5: Capture/Compare control update generation This bit can be set by software, it is automatically cleared by hardware. Note: This bit acts only on channels that have a complementary output..
Bit 7: Break generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
capture/compare mode register 1 (input mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/3 fields covered.
capture/compare mode register (output mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
1/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[1]M_3
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[1]M
rw |
OC[1]PE
rw |
OC[1]FE
rw |
CC[1]S
rw |
Bits 0-1: Capture/Compare 1 selection.
Bit 2: Output compare 1 fast enable.
Bit 3: Output compare 1 preload enable.
Bits 4-6: Output compare 1 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy
4: ForceInactive: OCyREF is forced low
5: ForceActive: OCyREF is forced high
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active
7: PwmMode2: Inversely to PwmMode1
Bit 16: Output compare 1 mode, bit 3.
capture/compare enable register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/4 fields covered.
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
1/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
auto-reload register
Offset: 0x2c, size: 32, reset: 0x0000FFFF, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARR
rw |
repetition counter register
Offset: 0x30, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
REP
rw |
capture/compare register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
break and dead-time register
Offset: 0x44, size: 32, reset: 0x00000000, access: read-write
0/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BKBID
rw |
BKDSRM
rw |
BKF
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MOE
rw |
AOE
rw |
BKP
rw |
BKE
rw |
OSSR
rw |
OSSI
rw |
LOCK
rw |
DTG
rw |
Bits 0-7: Dead-time generator setup.
Bits 8-9: Lock configuration These bits offer a write protection against software errors. Note: The LOCK bits can be written only once after the reset. Once the TIMx_BDTR register has been written, their content is frozen until the next reset..
Bit 10: Off-state selection for Idle mode This bit is used when MOE=0 on channels configured as outputs. See OC/OCN enable description for more details (enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page846). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 11: Off-state selection for Run mode This bit is used when MOE=1 on channels that have a complementary output which are configured as outputs. OSSR is not implemented if no complementary output is implemented in the timer. See OC/OCN enable description for more details (enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page846). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 12: Break enable 1; Break inputs (BRK and CCS clock failure event) enabled Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 13: Break polarity Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 14: Automatic output enable Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 15: Main output enable This bit is cleared asynchronously by hardware as soon as the break input is active. It is set by software or automatically depending on the AOE bit. It is acting only on the channels which are configured in output. enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page846)..
Bits 16-19: Break filter This bit-field defines the frequency used to sample BRK input and the length of the digital filter applied to BRK. The digital filter is made of an event counter in which N events are needed to validate a transition on the output: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 26: Break Disarm This bit is cleared by hardware when no break source is active. The BKDSRM bit must be set by software to release the bidirectional output control (open-drain output in Hi-Z state) and then be polled it until it is reset by hardware, indicating that the fault condition has disappeared. Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 28: Break Bidirectional In the bidirectional mode (BKBID bit set to 1), the break input is configured both in input mode and in open drain output mode. Any active break event asserts a low logic level on the Break input to indicate an internal break event to external devices. Note: This bit cannot be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
DMA control register
Offset: 0x48, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-4: DMA base address This 5-bit field defines the base-address for DMA transfers (when read/write access are done through the TIMx_DMAR address). DBA is defined as an offset starting from the address of the TIMx_CR1 register. Example: ... Example: Let us consider the following transfer: DBL = 7 transfers and DBA = TIMx_CR1. In this case the transfer is done to/from 7 registers starting from the TIMx_CR1 address..
Bits 8-12: DMA burst length This 5-bit field defines the length of DMA transfers (the timer recognizes a burst transfer when a read or a write access is done to the TIMx_DMAR address), i.e. the number of transfers. Transfers can be in half-words or in bytes (see example below). ....
DMA address for full transfer
Offset: 0x4c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMAB
rw |
TIM17 option register 1
Offset: 0x60, size: 32, reset: 0x00000001, access: read-write
0/6 fields covered.
Bit 0: BRK BKIN input enable This bit enables the BKIN alternate function input for the timer's BRK input. BKIN input is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 1: BRK COMP1 enable This bit enables the COMP1 for the timer's BRK input. COMP1 output is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 2: BRK COMP2 enable This bit enables the COMP2 for the timer's BRK input. COMP2 output is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 9: BRK BKIN input polarity This bit selects the BKIN alternate function input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 10: BRK COMP1 input polarity This bit selects the COMP1 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 11: BRK COMP2 input polarity This bit selects the COMP2 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
input selection register
Offset: 0x68, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TI1SEL
rw |
0x40014800: General purpose timers
12/66 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Input | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Output | ||||||||||||||||||||||||||||||||
0x20 | CCER | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR | ||||||||||||||||||||||||||||||||
0x30 | RCR | ||||||||||||||||||||||||||||||||
0x34 | CCR[1] | ||||||||||||||||||||||||||||||||
0x44 | BDTR | ||||||||||||||||||||||||||||||||
0x48 | DCR | ||||||||||||||||||||||||||||||||
0x4c | DMAR | ||||||||||||||||||||||||||||||||
0x60 | AF1 | ||||||||||||||||||||||||||||||||
0x68 | TISEL |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
6/7 fields covered.
Bit 0: Counter enable Note: External clock and gated mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and the dead-time and sampling clock (tDTS)used by the dead-time generators and the digital filters (TIx),.
Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT
Bit 11: UIF status bit remapping.
control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/5 fields covered.
Bit 0: Capture/compare preloaded control Note: This bit acts only on channels that have a complementary output..
Bit 2: Capture/compare control update selection Note: This bit acts only on channels that have a complementary output..
Bit 3: Capture/compare DMA selection.
Bit 8: Output Idle state 1 (OC1 output) Note: This bit can not be modified as long as LOCK level 1, 2 or 3 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 9: Output Idle state 1 (OC1N output) Note: This bit can not be modified as long as LOCK level 1, 2 or 3 has been programmed (LOCK bits in TIMx_BDTR register)..
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
1/6 fields covered.
Bit 0: Update interrupt enable.
Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled
Bit 1: Capture/Compare 1 interrupt enable.
Bit 5: COM interrupt enable.
Bit 7: Break interrupt enable.
Bit 8: Update DMA request enable.
Bit 9: Capture/Compare 1 DMA request enable.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/5 fields covered.
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow regarding the repetition counter value (update if repetition counter = 0) and if the UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
Bit 1: Capture/compare 1 interrupt flag.
Bit 5: COM interrupt flag.
Bit 7: Break interrupt flag This flag is set by hardware as soon as the break input goes active. It can be cleared by software if the break input is not active..
Bit 9: Capture/Compare 1 overcapture flag.
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/4 fields covered.
Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..
Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.
Bit 1: Capture/compare 1 generation.
Bit 5: Capture/Compare control update generation This bit can be set by software, it is automatically cleared by hardware. Note: This bit acts only on channels that have a complementary output..
Bit 7: Break generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
capture/compare mode register 1 (input mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/3 fields covered.
capture/compare mode register (output mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
1/5 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[1]M_3
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[1]M
rw |
OC[1]PE
rw |
OC[1]FE
rw |
CC[1]S
rw |
Bits 0-1: Capture/Compare 1 selection.
Bit 2: Output compare 1 fast enable.
Bit 3: Output compare 1 preload enable.
Bits 4-6: Output compare 1 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy
4: ForceInactive: OCyREF is forced low
5: ForceActive: OCyREF is forced high
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active
7: PwmMode2: Inversely to PwmMode1
Bit 16: Output compare 1 mode, bit 3.
capture/compare enable register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/4 fields covered.
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
1/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
auto-reload register
Offset: 0x2c, size: 32, reset: 0x0000FFFF, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARR
rw |
repetition counter register
Offset: 0x30, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
REP
rw |
capture/compare register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CCR
rw |
break and dead-time register
Offset: 0x44, size: 32, reset: 0x00000000, access: read-write
0/11 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BKBID
rw |
BKDSRM
rw |
BKF
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
MOE
rw |
AOE
rw |
BKP
rw |
BKE
rw |
OSSR
rw |
OSSI
rw |
LOCK
rw |
DTG
rw |
Bits 0-7: Dead-time generator setup.
Bits 8-9: Lock configuration These bits offer a write protection against software errors. Note: The LOCK bits can be written only once after the reset. Once the TIMx_BDTR register has been written, their content is frozen until the next reset..
Bit 10: Off-state selection for Idle mode This bit is used when MOE=0 on channels configured as outputs. See OC/OCN enable description for more details (enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page846). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 11: Off-state selection for Run mode This bit is used when MOE=1 on channels that have a complementary output which are configured as outputs. OSSR is not implemented if no complementary output is implemented in the timer. See OC/OCN enable description for more details (enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page846). Note: This bit can not be modified as soon as the LOCK level 2 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 12: Break enable 1; Break inputs (BRK and CCS clock failure event) enabled Note: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 13: Break polarity Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 14: Automatic output enable Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 15: Main output enable This bit is cleared asynchronously by hardware as soon as the break input is active. It is set by software or automatically depending on the AOE bit. It is acting only on the channels which are configured in output. enable register (TIM16_CCER)(TIMx_CCER)(x = 16 to 17) on page846)..
Bits 16-19: Break filter This bit-field defines the frequency used to sample BRK input and the length of the digital filter applied to BRK. The digital filter is made of an event counter in which N events are needed to validate a transition on the output: This bit cannot be modified when LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 26: Break Disarm This bit is cleared by hardware when no break source is active. The BKDSRM bit must be set by software to release the bidirectional output control (open-drain output in Hi-Z state) and then be polled it until it is reset by hardware, indicating that the fault condition has disappeared. Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
Bit 28: Break Bidirectional In the bidirectional mode (BKBID bit set to 1), the break input is configured both in input mode and in open drain output mode. Any active break event asserts a low logic level on the Break input to indicate an internal break event to external devices. Note: This bit cannot be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register). Note: Any write operation to this bit takes a delay of 1 APB clock cycle to become effective..
DMA control register
Offset: 0x48, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-4: DMA base address This 5-bit field defines the base-address for DMA transfers (when read/write access are done through the TIMx_DMAR address). DBA is defined as an offset starting from the address of the TIMx_CR1 register. Example: ... Example: Let us consider the following transfer: DBL = 7 transfers and DBA = TIMx_CR1. In this case the transfer is done to/from 7 registers starting from the TIMx_CR1 address..
Bits 8-12: DMA burst length This 5-bit field defines the length of DMA transfers (the timer recognizes a burst transfer when a read or a write access is done to the TIMx_DMAR address), i.e. the number of transfers. Transfers can be in half-words or in bytes (see example below). ....
DMA address for full transfer
Offset: 0x4c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMAB
rw |
TIM17 option register 1
Offset: 0x60, size: 32, reset: 0x00000001, access: read-write
0/6 fields covered.
Bit 0: BRK BKIN input enable This bit enables the BKIN alternate function input for the timer's BRK input. BKIN input is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 1: BRK COMP1 enable This bit enables the COMP1 for the timer's BRK input. COMP1 output is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 2: BRK COMP2 enable This bit enables the COMP2 for the timer's BRK input. COMP2 output is 'ORed' with the other BRK sources. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 9: BRK BKIN input polarity This bit selects the BKIN alternate function input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 10: BRK COMP1 input polarity This bit selects the COMP1 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
Bit 11: BRK COMP2 input polarity This bit selects the COMP2 input sensitivity. It must be programmed together with the BKP polarity bit. Note: This bit can not be modified as long as LOCK level 1 has been programmed (LOCK bits in TIMx_BDTR register)..
input selection register
Offset: 0x68, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TI1SEL
rw |
0x40000000: General-purpose-timers
20/114 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | SMCR | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Input | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Output | ||||||||||||||||||||||||||||||||
0x1c | CCMR2_Input | ||||||||||||||||||||||||||||||||
0x1c | CCMR2_Output | ||||||||||||||||||||||||||||||||
0x20 | CCER | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x24 | CNT_ALTERNATE5 | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR | ||||||||||||||||||||||||||||||||
0x34 | CCR[1] | ||||||||||||||||||||||||||||||||
0x38 | CCR[2] | ||||||||||||||||||||||||||||||||
0x3c | CCR[3] | ||||||||||||||||||||||||||||||||
0x40 | CCR[4] | ||||||||||||||||||||||||||||||||
0x48 | DCR | ||||||||||||||||||||||||||||||||
0x4c | DMAR | ||||||||||||||||||||||||||||||||
0x50 | OR1 | ||||||||||||||||||||||||||||||||
0x60 | AF1 | ||||||||||||||||||||||||||||||||
0x68 | TISEL |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
8/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UIFREMAP
rw |
CKD
rw |
ARPE
rw |
CMS
rw |
DIR
rw |
OPM
rw |
URS
rw |
UDIS
rw |
CEN
rw |
Bit 0: Counter enable Note: External clock, gated mode and encoder mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware. CEN is cleared automatically in one-pulse mode, when an update event occurs..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One-pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 4: Direction Note: This bit is read only when the timer is configured in Center-aligned mode or Encoder mode..
Allowed values:
0: Up: Counter used as upcounter
1: Down: Counter used as downcounter
Bits 5-6: Center-aligned mode selection Note: It is not allowed to switch from edge-aligned mode to center-aligned mode as long as the counter is enabled (CEN=1).
Allowed values:
0: EdgeAligned: The counter counts up or down depending on the direction bit
1: CenterAligned1: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting down.
2: CenterAligned2: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting up.
3: CenterAligned3: The counter counts up and down alternatively. Output compare interrupt flags are set both when the counter is counting up or down.
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and sampling clock used by the digital filters (ETR, TIx),.
Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT
Bit 11: UIF status bit remapping.
control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/3 fields covered.
Bit 3: Capture/compare DMA selection.
Bits 4-6: Master mode selection These bits permit to select the information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows: When the Counter Enable signal is controlled by the trigger input, there is a delay on TRGO, except if the master/slave mode is selected (see the MSM bit description in TIMx_SMCR register). Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..
Bit 7: TI1 selection.
slave mode control register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/10 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TS2
rw |
SMS2
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ETP
rw |
ECE
rw |
ETPS
rw |
ETF
rw |
MSM
rw |
TS1
rw |
OCCS
rw |
SMS1
rw |
Bits 0-2: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. reinitializes the counter, generates an update of the registers and starts the counter. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS=00100). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bit 3: OCREF clear selection This bit is used to select the OCREF clear source.
Bits 4-6: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
Bit 7: Master/Slave mode.
Bits 8-11: External trigger filter This bit-field then defines the frequency used to sample ETRP signal and the length of the digital filter applied to ETRP. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output:.
Bits 12-13: External trigger prescaler External trigger signal ETRP frequency must be at most 1/4 of CK_INT frequency. A prescaler can be enabled to reduce ETRP frequency. It is useful when inputting fast external clocks..
Bit 14: External clock enable This bit enables External clock mode 2. Note: Setting the ECE bit has the same effect as selecting external clock mode 1 with TRGI connected to ETRF (SMS=111 and TS=00111). It is possible to simultaneously use external clock mode 2 with the following slave modes: reset mode, gated mode and trigger mode. Nevertheless, TRGI must not be connected to ETRF in this case (TS bits must not be 00111). If external clock mode 1 and external clock mode 2 are enabled at the same time, the external clock input is ETRF..
Bit 15: External trigger polarity This bit selects whether ETR or ETR is used for trigger operations.
Bit 16: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. reinitializes the counter, generates an update of the registers and starts the counter. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS=00100). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bits 20-21: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
1/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDE
rw |
CC[4]DE
rw |
CC[3]DE
rw |
CC[2]DE
rw |
CC[1]DE
rw |
UDE
rw |
TIE
rw |
CC[4]IE
rw |
CC[3]IE
rw |
CC[2]IE
rw |
CC[1]IE
rw |
UIE
rw |
Bit 0: Update interrupt enable.
Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled
Bit 1: Capture/Compare 1 interrupt enable.
Bit 2: Capture/Compare 2 interrupt enable.
Bit 3: Capture/Compare 3 interrupt enable.
Bit 4: Capture/Compare 4 interrupt enable.
Bit 6: Trigger interrupt enable.
Bit 8: Update DMA request enable.
Bit 9: Capture/Compare 1 DMA request enable.
Bit 10: Capture/Compare 2 DMA request enable.
Bit 11: Capture/Compare 3 DMA request enable.
Bit 12: Capture/Compare 4 DMA request enable.
Bit 14: Trigger DMA request enable.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/10 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC[4]OF
rw |
CC[3]OF
rw |
CC[2]OF
rw |
CC[1]OF
rw |
TIF
rw |
CC[4]IF
rw |
CC[3]IF
rw |
CC[2]IF
rw |
CC[1]IF
rw |
UIF
rw |
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow or underflow and if UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by a trigger event (refer to the synchro control register description), if URS=0 and UDIS=0 in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
Bit 1: Capture/compare 1 interrupt flag.
Bit 2: Capture/compare 2 interrupt flag.
Bit 3: Capture/compare 3 interrupt flag.
Bit 4: Capture/compare 4 interrupt flag.
Bit 6: Trigger interrupt flag This flag is set by hardware on the TRG trigger event (active edge detected on TRGI input when the slave mode controller is enabled in all modes but gated mode. It is set when the counter starts or stops when gated mode is selected. It is cleared by software..
Bit 9: Capture/Compare 1 overcapture flag.
Bit 10: Capture/Compare 2 overcapture flag.
Bit 11: Capture/Compare 3 overcapture flag.
Bit 12: Capture/Compare 4 overcapture flag.
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/6 fields covered.
Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..
Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.
Bit 1: Capture/compare 1 generation.
Bit 2: Capture/compare 2 generation.
Bit 3: Capture/compare 3 generation.
Bit 4: Capture/compare 4 generation.
Bit 6: Trigger generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
capture/compare mode register 1 (input mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/6 fields covered.
capture/compare mode register 1 (output mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
4/12 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[2]M_3
rw |
OC[1]M_3
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[2]CE
rw |
OC[2]M
rw |
OC[2]PE
rw |
OC[2]FE
rw |
CC[2]S
rw |
OC[1]CE
rw |
OC[1]M
rw |
OC[1]PE
rw |
OC[1]FE
rw |
CC[1]S
rw |
Bits 0-1: Capture/Compare 1 selection.
Bit 2: Output compare 1 fast enable.
Bit 3: Output compare 1 preload enable.
Bits 4-6: Output compare 1 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 7: Output compare 1 clear enable.
Bits 8-9: Capture/Compare 2 selection.
Bit 10: Output compare 2 fast enable.
Bit 11: Output compare 2 preload enable.
Bits 12-14: Output compare 2 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 15: Output compare 2 clear enable.
Bit 16: Output compare 1 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
Bit 24: Output compare 2 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare mode register 2 (input mode)
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
0/6 fields covered.
capture/compare mode register 2 (output mode)
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
4/12 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[4]M_3
rw |
OC[3]M_3
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[4]CE
rw |
OC[4]M
rw |
OC[4]PE
rw |
OC[4]FE
rw |
CC[4]S
rw |
OC[3]CE
rw |
OC[3]M
rw |
OC[3]PE
rw |
OC[3]FE
rw |
CC[3]S
rw |
Bits 0-1: Capture/Compare 3 selection.
Bit 2: Output compare 3 fast enable.
Bit 3: Output compare 3 preload enable.
Bits 4-6: Output compare 3 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 7: Output compare 3 clear enable.
Bits 8-9: Capture/Compare 4 selection.
Bit 10: Output compare 4 fast enable.
Bit 11: Output compare 4 preload enable.
Bits 12-14: Output compare 4 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 15: Output compare 4 clear enable.
Bit 16: Output compare 3 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
Bit 24: Output compare 4 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare enable register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC[4]NP
rw |
CC[4]P
rw |
CC[4]E
rw |
CC[3]NP
rw |
CC[3]P
rw |
CC[3]E
rw |
CC[2]NP
rw |
CC[2]P
rw |
CC[2]E
rw |
CC[1]NP
rw |
CC[1]P
rw |
CC[1]E
rw |
Bit 0: Capture/Compare 1 output enable.
Bit 1: Capture/Compare 1 output Polarity.
Bit 3: Capture/Compare 1 output Polarity.
Bit 4: Capture/Compare 2 output enable.
Bit 5: Capture/Compare 2 output Polarity.
Bit 7: Capture/Compare 2 output Polarity.
Bit 8: Capture/Compare 3 output enable.
Bit 9: Capture/Compare 3 output Polarity.
Bit 11: Capture/Compare 3 output Polarity.
Bit 12: Capture/Compare 4 output enable.
Bit 13: Capture/Compare 4 output Polarity.
Bit 15: Capture/Compare 4 output Polarity.
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
auto-reload register
Offset: 0x2c, size: 32, reset: 0xFFFFFFFF, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x38, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x3c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x40, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
DMA control register
Offset: 0x48, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-4: DMA base address This 5-bit vector defines the base-address for DMA transfers (when read/write access are done through the TIMx_DMAR address). DBA is defined as an offset starting from the address of the TIMx_CR1 register. Example: ... Example: Let us consider the following transfer: DBL = 7 transfers & DBA = TIMx_CR1. In this case the transfer is done to/from 7 registers starting from the TIMx_CR1 address..
Bits 8-12: DMA burst length This 5-bit vector defines the number of DMA transfers (the timer recognizes a burst transfer when a read or a write access is done to the TIMx_DMAR address). ....
DMA address for full transfer
Offset: 0x4c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMAB
rw |
TIM option register
Offset: 0x50, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OCREF_CLR
rw |
TIM alternate function option register 1
Offset: 0x60, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
0x40000400: General-purpose-timers
19/114 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | SMCR | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Input | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Output | ||||||||||||||||||||||||||||||||
0x1c | CCMR2_Input | ||||||||||||||||||||||||||||||||
0x1c | CCMR2_Output | ||||||||||||||||||||||||||||||||
0x20 | CCER | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x24 | CNT_ALTERNATE5 | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR | ||||||||||||||||||||||||||||||||
0x34 | CCR[1] | ||||||||||||||||||||||||||||||||
0x38 | CCR[2] | ||||||||||||||||||||||||||||||||
0x3c | CCR[3] | ||||||||||||||||||||||||||||||||
0x40 | CCR[4] | ||||||||||||||||||||||||||||||||
0x48 | DCR | ||||||||||||||||||||||||||||||||
0x4c | DMAR | ||||||||||||||||||||||||||||||||
0x50 | OR1 | ||||||||||||||||||||||||||||||||
0x60 | AF1 | ||||||||||||||||||||||||||||||||
0x68 | TISEL |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
8/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UIFREMAP
rw |
CKD
rw |
ARPE
rw |
CMS
rw |
DIR
rw |
OPM
rw |
URS
rw |
UDIS
rw |
CEN
rw |
Bit 0: Counter enable Note: External clock, gated mode and encoder mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware. CEN is cleared automatically in one-pulse mode, when an update event occurs..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One-pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 4: Direction Note: This bit is read only when the timer is configured in Center-aligned mode or Encoder mode..
Allowed values:
0: Up: Counter used as upcounter
1: Down: Counter used as downcounter
Bits 5-6: Center-aligned mode selection Note: It is not allowed to switch from edge-aligned mode to center-aligned mode as long as the counter is enabled (CEN=1).
Allowed values:
0: EdgeAligned: The counter counts up or down depending on the direction bit
1: CenterAligned1: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting down.
2: CenterAligned2: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting up.
3: CenterAligned3: The counter counts up and down alternatively. Output compare interrupt flags are set both when the counter is counting up or down.
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and sampling clock used by the digital filters (ETR, TIx),.
Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT
Bit 11: UIF status bit remapping.
control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/3 fields covered.
Bit 3: Capture/compare DMA selection.
Bits 4-6: Master mode selection These bits permit to select the information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows: When the Counter Enable signal is controlled by the trigger input, there is a delay on TRGO, except if the master/slave mode is selected (see the MSM bit description in TIMx_SMCR register). Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..
Bit 7: TI1 selection.
slave mode control register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/10 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TS2
rw |
SMS2
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ETP
rw |
ECE
rw |
ETPS
rw |
ETF
rw |
MSM
rw |
TS1
rw |
OCCS
rw |
SMS1
rw |
Bits 0-2: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. reinitializes the counter, generates an update of the registers and starts the counter. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS=00100). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bit 3: OCREF clear selection This bit is used to select the OCREF clear source.
Bits 4-6: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
Bit 7: Master/Slave mode.
Bits 8-11: External trigger filter This bit-field then defines the frequency used to sample ETRP signal and the length of the digital filter applied to ETRP. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output:.
Bits 12-13: External trigger prescaler External trigger signal ETRP frequency must be at most 1/4 of CK_INT frequency. A prescaler can be enabled to reduce ETRP frequency. It is useful when inputting fast external clocks..
Bit 14: External clock enable This bit enables External clock mode 2. Note: Setting the ECE bit has the same effect as selecting external clock mode 1 with TRGI connected to ETRF (SMS=111 and TS=00111). It is possible to simultaneously use external clock mode 2 with the following slave modes: reset mode, gated mode and trigger mode. Nevertheless, TRGI must not be connected to ETRF in this case (TS bits must not be 00111). If external clock mode 1 and external clock mode 2 are enabled at the same time, the external clock input is ETRF..
Bit 15: External trigger polarity This bit selects whether ETR or ETR is used for trigger operations.
Bit 16: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. reinitializes the counter, generates an update of the registers and starts the counter. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS=00100). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bits 20-21: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
1/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDE
rw |
CC[4]DE
rw |
CC[3]DE
rw |
CC[2]DE
rw |
CC[1]DE
rw |
UDE
rw |
TIE
rw |
CC[4]IE
rw |
CC[3]IE
rw |
CC[2]IE
rw |
CC[1]IE
rw |
UIE
rw |
Bit 0: Update interrupt enable.
Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled
Bit 1: Capture/Compare 1 interrupt enable.
Bit 2: Capture/Compare 2 interrupt enable.
Bit 3: Capture/Compare 3 interrupt enable.
Bit 4: Capture/Compare 4 interrupt enable.
Bit 6: Trigger interrupt enable.
Bit 8: Update DMA request enable.
Bit 9: Capture/Compare 1 DMA request enable.
Bit 10: Capture/Compare 2 DMA request enable.
Bit 11: Capture/Compare 3 DMA request enable.
Bit 12: Capture/Compare 4 DMA request enable.
Bit 14: Trigger DMA request enable.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/10 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC[4]OF
rw |
CC[3]OF
rw |
CC[2]OF
rw |
CC[1]OF
rw |
TIF
rw |
CC[4]IF
rw |
CC[3]IF
rw |
CC[2]IF
rw |
CC[1]IF
rw |
UIF
rw |
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow or underflow and if UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by a trigger event (refer to the synchro control register description), if URS=0 and UDIS=0 in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
Bit 1: Capture/compare 1 interrupt flag.
Bit 2: Capture/compare 2 interrupt flag.
Bit 3: Capture/compare 3 interrupt flag.
Bit 4: Capture/compare 4 interrupt flag.
Bit 6: Trigger interrupt flag This flag is set by hardware on the TRG trigger event (active edge detected on TRGI input when the slave mode controller is enabled in all modes but gated mode. It is set when the counter starts or stops when gated mode is selected. It is cleared by software..
Bit 9: Capture/Compare 1 overcapture flag.
Bit 10: Capture/Compare 2 overcapture flag.
Bit 11: Capture/Compare 3 overcapture flag.
Bit 12: Capture/Compare 4 overcapture flag.
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/6 fields covered.
Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..
Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.
Bit 1: Capture/compare 1 generation.
Bit 2: Capture/compare 2 generation.
Bit 3: Capture/compare 3 generation.
Bit 4: Capture/compare 4 generation.
Bit 6: Trigger generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
capture/compare mode register 1 (input mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/6 fields covered.
capture/compare mode register 1 (output mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
3/12 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[2]M_3
rw |
OC[1]M_3
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[2]CE
rw |
OC[2]M
rw |
OC[2]PE
rw |
OC[2]FE
rw |
CC[2]S
rw |
OC[1]CE
rw |
OC1M1
rw |
OC[1]PE
rw |
OC[1]FE
rw |
CC[1]S
rw |
Bits 0-1: Capture/Compare 1 selection.
Bit 2: Output compare 1 fast enable.
Bit 3: Output compare 1 preload enable.
Bits 4-6: Output compare 1 mode These bits define the behavior of the output reference signal OC1REF from which OC1 and OC1N are derived. OC1REF is active high whereas OC1 and OC1N active level depends on CC1P and CC1NP bits. Note: In PWM mode, the OCREF level changes only when the result of the comparison changes or when the output compare mode switches from 'frozen' mode to 'PWM' mode. Note: The OC1M[3] bit is not contiguous, located in bit 16..
Bit 7: Output compare 1 clear enable.
Bits 8-9: Capture/Compare 2 selection.
Bit 10: Output compare 2 fast enable.
Bit 11: Output compare 2 preload enable.
Bits 12-14: Output compare 2 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 15: Output compare 2 clear enable.
Bit 16: Output compare 1 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
Bit 24: Output compare 2 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare mode register 2 (input mode)
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
0/6 fields covered.
capture/compare mode register 2 (output mode)
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
4/12 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[4]M_3
rw |
OC[3]M_3
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[4]CE
rw |
OC[4]M
rw |
OC[4]PE
rw |
OC[4]FE
rw |
CC[4]S
rw |
OC[3]CE
rw |
OC[3]M
rw |
OC[3]PE
rw |
OC[3]FE
rw |
CC[3]S
rw |
Bits 0-1: Capture/Compare 3 selection.
Bit 2: Output compare 3 fast enable.
Bit 3: Output compare 3 preload enable.
Bits 4-6: Output compare 3 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 7: Output compare 3 clear enable.
Bits 8-9: Capture/Compare 4 selection.
Bit 10: Output compare 4 fast enable.
Bit 11: Output compare 4 preload enable.
Bits 12-14: Output compare 4 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 15: Output compare 4 clear enable.
Bit 16: Output compare 3 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
Bit 24: Output compare 4 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare enable register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC[4]NP
rw |
CC[4]P
rw |
CC[4]E
rw |
CC[3]NP
rw |
CC[3]P
rw |
CC[3]E
rw |
CC[2]NP
rw |
CC[2]P
rw |
CC[2]E
rw |
CC[1]NP
rw |
CC[1]P
rw |
CC[1]E
rw |
Bit 0: Capture/Compare 1 output enable.
Bit 1: Capture/Compare 1 output Polarity.
Bit 3: Capture/Compare 1 output Polarity.
Bit 4: Capture/Compare 2 output enable.
Bit 5: Capture/Compare 2 output Polarity.
Bit 7: Capture/Compare 2 output Polarity.
Bit 8: Capture/Compare 3 output enable.
Bit 9: Capture/Compare 3 output Polarity.
Bit 11: Capture/Compare 3 output Polarity.
Bit 12: Capture/Compare 4 output enable.
Bit 13: Capture/Compare 4 output Polarity.
Bit 15: Capture/Compare 4 output Polarity.
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CNT
rw |
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
auto-reload register
Offset: 0x2c, size: 32, reset: 0xFFFFFFFF, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x38, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x3c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x40, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
DMA control register
Offset: 0x48, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-4: DMA base address This 5-bit vector defines the base-address for DMA transfers (when read/write access are done through the TIMx_DMAR address). DBA is defined as an offset starting from the address of the TIMx_CR1 register. Example: ... Example: Let us consider the following transfer: DBL = 7 transfers & DBA = TIMx_CR1. In this case the transfer is done to/from 7 registers starting from the TIMx_CR1 address..
Bits 8-12: DMA burst length This 5-bit vector defines the number of DMA transfers (the timer recognizes a burst transfer when a read or a write access is done to the TIMx_DMAR address). ....
DMA address for full transfer
Offset: 0x4c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMAB
rw |
TIM option register
Offset: 0x50, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OCREF_CLR
rw |
TIM alternate function option register 1
Offset: 0x60, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
0x40000800: General-purpose-timers
20/114 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | SMCR | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Input | ||||||||||||||||||||||||||||||||
0x18 | CCMR1_Output | ||||||||||||||||||||||||||||||||
0x1c | CCMR2_Input | ||||||||||||||||||||||||||||||||
0x1c | CCMR2_Output | ||||||||||||||||||||||||||||||||
0x20 | CCER | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x24 | CNT_ALTERNATE5 | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR | ||||||||||||||||||||||||||||||||
0x34 | CCR[1] | ||||||||||||||||||||||||||||||||
0x38 | CCR[2] | ||||||||||||||||||||||||||||||||
0x3c | CCR[3] | ||||||||||||||||||||||||||||||||
0x40 | CCR[4] | ||||||||||||||||||||||||||||||||
0x48 | DCR | ||||||||||||||||||||||||||||||||
0x4c | DMAR | ||||||||||||||||||||||||||||||||
0x50 | OR1 | ||||||||||||||||||||||||||||||||
0x60 | AF1 | ||||||||||||||||||||||||||||||||
0x68 | TISEL |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
8/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UIFREMAP
rw |
CKD
rw |
ARPE
rw |
CMS
rw |
DIR
rw |
OPM
rw |
URS
rw |
UDIS
rw |
CEN
rw |
Bit 0: Counter enable Note: External clock, gated mode and encoder mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware. CEN is cleared automatically in one-pulse mode, when an update event occurs..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One-pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 4: Direction Note: This bit is read only when the timer is configured in Center-aligned mode or Encoder mode..
Allowed values:
0: Up: Counter used as upcounter
1: Down: Counter used as downcounter
Bits 5-6: Center-aligned mode selection Note: It is not allowed to switch from edge-aligned mode to center-aligned mode as long as the counter is enabled (CEN=1).
Allowed values:
0: EdgeAligned: The counter counts up or down depending on the direction bit
1: CenterAligned1: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting down.
2: CenterAligned2: The counter counts up and down alternatively. Output compare interrupt flags are set only when the counter is counting up.
3: CenterAligned3: The counter counts up and down alternatively. Output compare interrupt flags are set both when the counter is counting up or down.
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bits 8-9: Clock division This bit-field indicates the division ratio between the timer clock (CK_INT) frequency and sampling clock used by the digital filters (ETR, TIx),.
Allowed values:
0: Div1: t_DTS = t_CK_INT
1: Div2: t_DTS = 2 × t_CK_INT
2: Div4: t_DTS = 4 × t_CK_INT
Bit 11: UIF status bit remapping.
control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/3 fields covered.
Bit 3: Capture/compare DMA selection.
Bits 4-6: Master mode selection These bits permit to select the information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows: When the Counter Enable signal is controlled by the trigger input, there is a delay on TRGO, except if the master/slave mode is selected (see the MSM bit description in TIMx_SMCR register). Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..
Bit 7: TI1 selection.
slave mode control register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
0/10 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TS2
rw |
SMS2
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ETP
rw |
ECE
rw |
ETPS
rw |
ETF
rw |
MSM
rw |
TS1
rw |
OCCS
rw |
SMS1
rw |
Bits 0-2: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. reinitializes the counter, generates an update of the registers and starts the counter. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS=00100). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bit 3: OCREF clear selection This bit is used to select the OCREF clear source.
Bits 4-6: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
Bit 7: Master/Slave mode.
Bits 8-11: External trigger filter This bit-field then defines the frequency used to sample ETRP signal and the length of the digital filter applied to ETRP. The digital filter is made of an event counter in which N consecutive events are needed to validate a transition on the output:.
Bits 12-13: External trigger prescaler External trigger signal ETRP frequency must be at most 1/4 of CK_INT frequency. A prescaler can be enabled to reduce ETRP frequency. It is useful when inputting fast external clocks..
Bit 14: External clock enable This bit enables External clock mode 2. Note: Setting the ECE bit has the same effect as selecting external clock mode 1 with TRGI connected to ETRF (SMS=111 and TS=00111). It is possible to simultaneously use external clock mode 2 with the following slave modes: reset mode, gated mode and trigger mode. Nevertheless, TRGI must not be connected to ETRF in this case (TS bits must not be 00111). If external clock mode 1 and external clock mode 2 are enabled at the same time, the external clock input is ETRF..
Bit 15: External trigger polarity This bit selects whether ETR or ETR is used for trigger operations.
Bit 16: Slave mode selection When external signals are selected the active edge of the trigger signal (TRGI) is linked to the polarity selected on the external input (see Input Control register and Control Register description. reinitializes the counter, generates an update of the registers and starts the counter. Note: The gated mode must not be used if TI1F_ED is selected as the trigger input (TS=00100). Indeed, TI1F_ED outputs 1 pulse for each transition on TI1F, whereas the gated mode checks the level of the trigger signal. Note: The clock of the slave peripherals (timer, ADC, ...) receiving the TRGO or the TRGO2 signals must be enabled prior to receive events from the master timer, and the clock frequency (prescaler) must not be changed on-the-fly while triggers are received from the master timer..
Bits 20-21: Trigger selection This bit-field selects the trigger input to be used to synchronize the counter. Others: Reserved See for more details on ITRx meaning for each Timer. Note: These bits must be changed only when they are not used (e.g. when SMS=000) to avoid wrong edge detections at the transition..
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
1/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDE
rw |
CC[4]DE
rw |
CC[3]DE
rw |
CC[2]DE
rw |
CC[1]DE
rw |
UDE
rw |
TIE
rw |
CC[4]IE
rw |
CC[3]IE
rw |
CC[2]IE
rw |
CC[1]IE
rw |
UIE
rw |
Bit 0: Update interrupt enable.
Allowed values:
0: Disabled: Update interrupt disabled
1: Enabled: Update interrupt enabled
Bit 1: Capture/Compare 1 interrupt enable.
Bit 2: Capture/Compare 2 interrupt enable.
Bit 3: Capture/Compare 3 interrupt enable.
Bit 4: Capture/Compare 4 interrupt enable.
Bit 6: Trigger interrupt enable.
Bit 8: Update DMA request enable.
Bit 9: Capture/Compare 1 DMA request enable.
Bit 10: Capture/Compare 2 DMA request enable.
Bit 11: Capture/Compare 3 DMA request enable.
Bit 12: Capture/Compare 4 DMA request enable.
Bit 14: Trigger DMA request enable.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/10 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC[4]OF
rw |
CC[3]OF
rw |
CC[2]OF
rw |
CC[1]OF
rw |
TIF
rw |
CC[4]IF
rw |
CC[3]IF
rw |
CC[2]IF
rw |
CC[1]IF
rw |
UIF
rw |
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow or underflow and if UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register. When CNT is reinitialized by a trigger event (refer to the synchro control register description), if URS=0 and UDIS=0 in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
Bit 1: Capture/compare 1 interrupt flag.
Bit 2: Capture/compare 2 interrupt flag.
Bit 3: Capture/compare 3 interrupt flag.
Bit 4: Capture/compare 4 interrupt flag.
Bit 6: Trigger interrupt flag This flag is set by hardware on the TRG trigger event (active edge detected on TRGI input when the slave mode controller is enabled in all modes but gated mode. It is set when the counter starts or stops when gated mode is selected. It is cleared by software..
Bit 9: Capture/Compare 1 overcapture flag.
Bit 10: Capture/Compare 2 overcapture flag.
Bit 11: Capture/Compare 3 overcapture flag.
Bit 12: Capture/Compare 4 overcapture flag.
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/6 fields covered.
Bit 0: Update generation This bit can be set by software, it is automatically cleared by hardware..
Allowed values:
1: Update: Re-initializes the timer counter and generates an update of the registers.
Bit 1: Capture/compare 1 generation.
Bit 2: Capture/compare 2 generation.
Bit 3: Capture/compare 3 generation.
Bit 4: Capture/compare 4 generation.
Bit 6: Trigger generation This bit is set by software in order to generate an event, it is automatically cleared by hardware..
capture/compare mode register 1 (input mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
0/6 fields covered.
capture/compare mode register 1 (output mode)
Offset: 0x18, size: 32, reset: 0x00000000, access: read-write
4/12 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[2]M_3
rw |
OC[1]M_3
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[2]CE
rw |
OC[2]M
rw |
OC[2]PE
rw |
OC[2]FE
rw |
CC[2]S
rw |
OC[1]CE
rw |
OC[1]M
rw |
OC[1]PE
rw |
OC[1]FE
rw |
CC[1]S
rw |
Bits 0-1: Capture/Compare 1 selection.
Bit 2: Output compare 1 fast enable.
Bit 3: Output compare 1 preload enable.
Bits 4-6: Output compare 1 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 7: Output compare 1 clear enable.
Bits 8-9: Capture/Compare 2 selection.
Bit 10: Output compare 2 fast enable.
Bit 11: Output compare 2 preload enable.
Bits 12-14: Output compare 2 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 15: Output compare 2 clear enable.
Bit 16: Output compare 1 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
Bit 24: Output compare 2 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare mode register 2 (input mode)
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
0/6 fields covered.
capture/compare mode register 2 (output mode)
Offset: 0x1c, size: 32, reset: 0x00000000, access: read-write
4/12 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC[4]M_3
rw |
OC[3]M_3
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OC[4]CE
rw |
OC[4]M
rw |
OC[4]PE
rw |
OC[4]FE
rw |
CC[4]S
rw |
OC[3]CE
rw |
OC[3]M
rw |
OC[3]PE
rw |
OC[3]FE
rw |
CC[3]S
rw |
Bits 0-1: Capture/Compare 3 selection.
Bit 2: Output compare 3 fast enable.
Bit 3: Output compare 3 preload enable.
Bits 4-6: Output compare 3 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 7: Output compare 3 clear enable.
Bits 8-9: Capture/Compare 4 selection.
Bit 10: Output compare 4 fast enable.
Bit 11: Output compare 4 preload enable.
Bits 12-14: Output compare 4 mode.
Allowed values:
0: Frozen: The comparison between the output compare register TIMx_CCRy and the counter TIMx_CNT has no effect on the outputs / OpmMode1: Retriggerable OPM mode 1 - In up-counting mode, the channel is active until a trigger event is detected (on TRGI signal). In down-counting mode, the channel is inactive
1: ActiveOnMatch: Set channel to active level on match. OCyREF signal is forced high when the counter matches the capture/compare register / OpmMode2: Inversely to OpmMode1
2: InactiveOnMatch: Set channel to inactive level on match. OCyREF signal is forced low when the counter matches the capture/compare register / Reserved
3: Toggle: OCyREF toggles when TIMx_CNT=TIMx_CCRy / Reserved
4: ForceInactive: OCyREF is forced low / CombinedPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC is the logical OR between OC1REF and OC2REF
5: ForceActive: OCyREF is forced high / CombinedPwmMode2: OCyREF has the same behavior as in PWM mode 2. OCyREFC is the logical AND between OC1REF and OC2REF
6: PwmMode1: In upcounting, channel is active as long as TIMx_CNT<TIMx_CCRy else inactive. In downcounting, channel is inactive as long as TIMx_CNT>TIMx_CCRy else active / AsymmetricPwmMode1: OCyREF has the same behavior as in PWM mode 1. OCyREFC outputs OC1REF when the counter is counting up, OC2REF when it is counting down
7: PwmMode2: Inversely to PwmMode1 / AsymmetricPwmMode2: Inversely to AsymmetricPwmMode1
Bit 15: Output compare 4 clear enable.
Bit 16: Output compare 3 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
Bit 24: Output compare 4 mode, bit 3.
Allowed values:
0: Normal: Normal output compare mode (modes 0-7)
1: Extended: Extended output compare mode (modes 7-15)
capture/compare enable register
Offset: 0x20, size: 32, reset: 0x00000000, access: read-write
0/12 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC[4]NP
rw |
CC[4]P
rw |
CC[4]E
rw |
CC[3]NP
rw |
CC[3]P
rw |
CC[3]E
rw |
CC[2]NP
rw |
CC[2]P
rw |
CC[2]E
rw |
CC[1]NP
rw |
CC[1]P
rw |
CC[1]E
rw |
Bit 0: Capture/Compare 1 output enable.
Bit 1: Capture/Compare 1 output Polarity.
Bit 3: Capture/Compare 1 output Polarity.
Bit 4: Capture/Compare 2 output enable.
Bit 5: Capture/Compare 2 output Polarity.
Bit 7: Capture/Compare 2 output Polarity.
Bit 8: Capture/Compare 3 output enable.
Bit 9: Capture/Compare 3 output Polarity.
Bit 11: Capture/Compare 3 output Polarity.
Bit 12: Capture/Compare 4 output enable.
Bit 13: Capture/Compare 4 output Polarity.
Bit 15: Capture/Compare 4 output Polarity.
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
auto-reload register
Offset: 0x2c, size: 32, reset: 0xFFFFFFFF, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x34, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x38, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x3c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
capture/compare register
Offset: 0x40, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
DMA control register
Offset: 0x48, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-4: DMA base address This 5-bit vector defines the base-address for DMA transfers (when read/write access are done through the TIMx_DMAR address). DBA is defined as an offset starting from the address of the TIMx_CR1 register. Example: ... Example: Let us consider the following transfer: DBL = 7 transfers & DBA = TIMx_CR1. In this case the transfer is done to/from 7 registers starting from the TIMx_CR1 address..
Bits 8-12: DMA burst length This 5-bit vector defines the number of DMA transfers (the timer recognizes a burst transfer when a read or a write access is done to the TIMx_DMAR address). ....
DMA address for full transfer
Offset: 0x4c, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
DMAB
rw |
TIM option register
Offset: 0x50, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OCREF_CLR
rw |
TIM alternate function option register 1
Offset: 0x60, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
0x40001000: Basic timers
14/15 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
5/6 fields covered.
Bit 0: Counter enable Note: Gated mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware. CEN is cleared automatically in one-pulse mode, when an update event occurs..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One-pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bit 11: UIF status bit remapping.
control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MMS
rw |
Bits 4-6: Master mode selection These bits are used to select the information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows: When the Counter Enable signal is controlled by the trigger input, there is a delay on TRGO, except if the master/slave mode is selected (see the MSM bit description in the TIMx_SMCR register). Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..
Allowed values:
0: Reset: Use UG bit from TIMx_EGR register
1: Enable: Use CNT bit from TIMx_CEN register
2: Update: Use the update event
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
2/2 fields covered.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UIF
rw |
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow or underflow regarding the repetition counter value and if UDIS = 0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in the TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UG
w |
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
2/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
auto-reload register
Offset: 0x2c, size: 32, reset: 0x0000FFFF, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARR
rw |
0x40001400: Basic timers
14/15 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0xc | DIER | ||||||||||||||||||||||||||||||||
0x10 | SR | ||||||||||||||||||||||||||||||||
0x14 | EGR | ||||||||||||||||||||||||||||||||
0x24 | CNT | ||||||||||||||||||||||||||||||||
0x28 | PSC | ||||||||||||||||||||||||||||||||
0x2c | ARR |
control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
5/6 fields covered.
Bit 0: Counter enable Note: Gated mode can work only if the CEN bit has been previously set by software. However trigger mode can set the CEN bit automatically by hardware. CEN is cleared automatically in one-pulse mode, when an update event occurs..
Allowed values:
0: Disabled: Counter disabled
1: Enabled: Counter enabled
Bit 1: Update disable This bit is set and cleared by software to enable/disable UEV event generation. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller Buffered registers are then loaded with their preload values..
Allowed values:
0: Enabled: Update event enabled
1: Disabled: Update event disabled
Bit 2: Update request source This bit is set and cleared by software to select the UEV event sources. Counter overflow/underflow Setting the UG bit Update generation through the slave mode controller.
Allowed values:
0: AnyEvent: Any of counter overflow/underflow, setting UG, or update through slave mode, generates an update interrupt or DMA request
1: CounterOnly: Only counter overflow/underflow generates an update interrupt or DMA request
Bit 3: One-pulse mode.
Allowed values:
0: Disabled: Counter is not stopped at update event
1: Enabled: Counter stops counting at the next update event (clearing the CEN bit)
Bit 7: Auto-reload preload enable.
Allowed values:
0: Disabled: TIMx_APRR register is not buffered
1: Enabled: TIMx_APRR register is buffered
Bit 11: UIF status bit remapping.
control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MMS
rw |
Bits 4-6: Master mode selection These bits are used to select the information to be sent in master mode to slave timers for synchronization (TRGO). The combination is as follows: When the Counter Enable signal is controlled by the trigger input, there is a delay on TRGO, except if the master/slave mode is selected (see the MSM bit description in the TIMx_SMCR register). Note: The clock of the slave timer or ADC must be enabled prior to receive events from the master timer, and must not be changed on-the-fly while triggers are received from the master timer..
Allowed values:
0: Reset: Use UG bit from TIMx_EGR register
1: Enable: Use CNT bit from TIMx_CEN register
2: Update: Use the update event
DMA/Interrupt enable register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
2/2 fields covered.
status register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UIF
rw |
Bit 0: Update interrupt flag This bit is set by hardware on an update event. It is cleared by software. At overflow or underflow regarding the repetition counter value and if UDIS = 0 in the TIMx_CR1 register. When CNT is reinitialized by software using the UG bit in the TIMx_EGR register, if URS=0 and UDIS=0 in the TIMx_CR1 register..
Allowed values:
0: NoUpdateOccurred: No update occurred
1: UpdatePending: Update interrupt pending
event generation register
Offset: 0x14, size: 32, reset: 0x00000000, access: write-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UG
w |
counter
Offset: 0x24, size: 32, reset: 0x00000000, access: read-write
2/2 fields covered.
prescaler
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSC
rw |
auto-reload register
Offset: 0x2c, size: 32, reset: 0x0000FFFF, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ARR
rw |
0x4000a000: USB Power Delivery interface
99/99 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CFGR1 | ||||||||||||||||||||||||||||||||
0x4 | CFGR2 | ||||||||||||||||||||||||||||||||
0x8 | CFGR3 | ||||||||||||||||||||||||||||||||
0xc | CR | ||||||||||||||||||||||||||||||||
0x10 | IMR | ||||||||||||||||||||||||||||||||
0x14 | SR | ||||||||||||||||||||||||||||||||
0x18 | ICR | ||||||||||||||||||||||||||||||||
0x1c | TX_ORDSETR | ||||||||||||||||||||||||||||||||
0x20 | TX_PAYSZR | ||||||||||||||||||||||||||||||||
0x24 | TXDR | ||||||||||||||||||||||||||||||||
0x28 | RX_ORDSETR | ||||||||||||||||||||||||||||||||
0x2c | RX_PAYSZR | ||||||||||||||||||||||||||||||||
0x30 | RXDR | ||||||||||||||||||||||||||||||||
0x34 | RX_ORDEXTR1 | ||||||||||||||||||||||||||||||||
0x38 | RX_ORDEXTR2 |
UCPD configuration register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UCPDEN
rw |
RXDMAEN
rw |
TXDMAEN
rw |
RXORDSETEN8
N/A |
RXORDSETEN7
N/A |
RXORDSETEN6
N/A |
RXORDSETEN5
N/A |
RXORDSETEN4
N/A |
RXORDSETEN3
N/A |
RXORDSETEN2
N/A |
RXORDSETEN1
N/A |
RXORDSETEN0
N/A |
PSC_USBPDCLK
rw |
|||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TRANSWIN
rw |
IFRGAP
rw |
HBITCLKDIV
rw |
Bits 0-5: Division ratio for producing half-bit clock The bitfield determines the division ratio (the bitfield value plus one) of a ucpd_clk divider producing half-bit clock (hbit_clk)..
Allowed values: 0x0-0x3f
Bits 6-10: Division ratio for producing inter-frame gap timer clock The bitfield determines the division ratio (the bitfield value minus one) of a ucpd_clk divider producing inter-frame gap timer clock (tInterFrameGap). The division ratio 15 is to apply for Tx clock at the USB PD 2.0 specification nominal value. The division ratios below 15 are to apply for Tx clock below nominal, and the division ratios above 15 for Tx clock above nominal..
Allowed values: 0x1-0x1f
Bits 11-15: Transition window duration The bitfield determines the division ratio (the bitfield value minus one) of a hbit_clk divider producing tTransitionWindow interval. Set a value that produces an interval of 12 to 20 us, taking into account the ucpd_clk frequency and the HBITCLKDIV[5:0] bitfield setting..
Allowed values: 0x1-0x1f
Bits 17-19: Pre-scaler division ratio for generating ucpd_clk The bitfield determines the division ratio of a kernel clock pre-scaler producing UCPD peripheral clock (ucpd_clk). It is recommended to use the pre-scaler so as to set the ucpd_clk frequency in the range from 6 to 9 MHz..
Allowed values:
0: Div1: Divide by 1
1: Div2: Divide by 2
2: Div4: Divide by 4
3: Div8: Divide by 8
4: Div16: Divide by 16
Bit 20: SOP detection.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 21: SOP' detection.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 22: SOP'' detection.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 23: Hard Reset detection.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 24: Cable Detect reset.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 25: SOP'_Debug.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 26: SOP'' Debug.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 27: SOP extension #1.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 28: SOP extension #2.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 29: Transmission DMA mode enable When set, the bit enables DMA mode for transmission..
Allowed values:
0: Disabled: DMA mode for transmission disabled
1: Enabled: DMA mode for transmission enabled
Bit 30: Reception DMA mode enable When set, the bit enables DMA mode for reception..
Allowed values:
0: Disabled: DMA mode for reception disabled
1: Enabled: DMA mode for reception enabled
Bit 31: UCPD peripheral enable General enable of the UCPD peripheral. Upon disabling, the peripheral instantly quits any ongoing activity and all control bits and bitfields default to their reset values. They must be set to their desired values each time the peripheral transits from disabled to enabled state..
Allowed values:
0: Disabled: UCPD peripheral disabled
1: Enabled: UCPD peripheral enabled
UCPD configuration register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
4/4 fields covered.
Bit 0: BMC decoder Rx pre-filter enable The sampling clock is that of the receiver (that is, after pre-scaler)..
Allowed values:
0: Enabled: Rx pre-filter enabled
1: Disabled: Rx pre-filter disabled
Bit 1: BMC decoder Rx pre-filter sampling method Number of consistent consecutive samples before confirming a new value..
Allowed values:
0: Samp3: 3 samples
1: Samp2: 2 samples
Bit 2: Force ClkReq clock request.
Allowed values:
0: NoForce: Do not force clock request
1: Force: Force clock request
Bit 3: Wakeup from Stop mode enable Setting the bit enables the UCPD_ASYNC_INT signal..
Allowed values:
0: Disabled: Disabled
1: Enabled: Enabled
UCPD configuration register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
6/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TRIM2_NG_CC3A0
rw |
TRIM2_NG_CC1A5
rw |
TRIM2_NG_CCRPD
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TRIM1_NG_CC3A0
rw |
TRIM1_NG_CC1A5
rw |
TRIM1_NG_CCRPD
rw |
Bits 0-3: SW trim value for RPD resistors on the CC1 line.
Allowed values: 0x0-0xf
Bits 4-8: SW trim value for RP1A5 resistors on the CC1 line.
Allowed values: 0x0-0xf
Bits 9-12: SW trim value for RP3A0 resistors on the CC1 line.
Allowed values: 0x0-0xf
Bits 16-19: SW trim value for RPD resistors on the CC2 line.
Allowed values: 0x0-0xf
Bits 20-24: SW trim value for RP1A5 resistors on the CC2 line.
Allowed values: 0x0-0xf
Bits 25-28: SW trim value for RP3A0 resistors on the CC2 line.
Allowed values: 0x0-0xf
UCPD control register
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC2TCDIS
rw |
CC1TCDIS
rw |
RDCH
rw |
FRSTX
rw |
FRSRXEN
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DBATTEN
rw |
CC2VCONNEN
rw |
CC1VCONNEN
rw |
CCENABLE
rw |
ANAMODE
rw |
ANASUBMODE
rw |
PHYCCSEL
rw |
PHYRXEN
rw |
RXMODE
rw |
TXHRST
rw |
TXSEND
rw |
TXMODE
rw |
Bits 0-1: Type of Tx packet.
Allowed values:
0: RegisterSet: Transmission of Tx packet previously defined in other registers
1: CableReset: Cable Reset sequence
2: BISTTest: BIST test sequence (BIST Carrier Mode 2)
Bit 2: Command to send a Tx packet The bit is cleared by hardware as soon as the packet transmission begins or is discarded..
Allowed values:
0: NoEffect: No effect
1: Start: Start Tx packet transmission
Bit 3: Command to send a Tx Hard Reset The bit is cleared by hardware as soon as the message transmission begins or is discarded..
Allowed values:
0: NoEffect: No effect
1: Start: Start Tx Hard Reset message
Bit 4: Receiver mode Determines the mode of the receiver. When the bit is set, RXORDSET behaves normally, RXDR no longer receives bytes yet the CRC checking still proceeds as for a normal message..
Allowed values:
0: Normal: Normal receive mode
1: BIST: BIST receive mode (BIST test data mode)
Bit 5: USB Power Delivery receiver enable Both CC1 and CC2 receivers are disabled when the bit is cleared. Only the CC receiver selected via the PHYCCSEL bit is enabled when the bit is set..
Allowed values:
0: Disabled: USB Power Delivery receiver disabled
1: Enabled: USB Power Delivery receiver enabled
Bit 6: CC1/CC2 line selector for USB Power Delivery signaling The selection depends on the cable orientation as discovered at attach..
Allowed values:
0: CC1: Use CC1 IO for Power Delivery communication
1: CC2: Use CC2 IO for Power Delivery communication
Bits 7-8: Analog PHY sub-mode Refer to TYPEC_VSTATE_CCx for the effect of this bitfield..
Allowed values:
0: Disabled: Disabled
1: Rp_DefaultUSB: Default USB Rp
2: Rp_1_5A: 1.5A Rp
3: Rp_3A: 3A Rp
Bit 9: Analog PHY operating mode The bit takes effect upon setting the UCPDx_STROBE bit of the SYS_CONFIG register. The use of CC1 and CC2 depends on CCENABLE. Refer to ANAMODE, ANASUBMODE and link with TYPEC_VSTATE_CCx for the effect of this bitfield in conjunction with ANASUBMODE[1:0]..
Allowed values:
0: Source: Source
1: Sink: Sink
Bits 10-11: CC line enable This bitfield enables CC1 and CC2 line analog PHYs (pull-ups and pull-downs) according to ANAMODE and ANASUBMODE[1:0] setting. A single line PHY can be enabled when, for example, the other line is driven by VCONN via an external VCONN switch. Enabling both PHYs is the normal usage for sink/source..
Allowed values:
0: Disabled: Both PHYs disabled
1: CC1Enabled: CC1 PHY enabled
2: CC2Enabled: CC2 PHY enabled
3: BothEnabled: CC1 and CC2 PHYs enabled
Bit 13: VCONN switch enable for CC1.
Allowed values:
0: Disabled: VCONN switch for CC1 disabled
1: Enabled: VCONN switch for CC1 enabled
Bit 14: VCONN switch enable for CC2.
Allowed values:
0: Disabled: VCONN switch for CC2 disabled
1: Enabled: VCONN switch for CC2 enabled
Bit 15: Dead battery function enable The bit takes effect upon setting the USBPDstrobe bit of the SYS_CONFIG register. Dead battery function only operates if the external circuit is appropriately configured..
Allowed values:
0: Disabled: Dead battery function disabled
1: Enabled: Dead battery function enabled
Bit 16: FRS event detection enable Setting the bit enables FRS Rx event (FRSEVT) detection on the CC line selected through the PHYCCSEL bit. 0: Disable Clear the bit when the device is attached to an FRS-incapable source/sink..
Allowed values:
0: Disabled: FRS Rx event detection disabled
1: Enabled: FRS Rx event detection enabled
Bit 17: FRS Tx signaling enable. Setting the bit enables FRS Tx signaling. The bit is cleared by hardware after a delay respecting the USB Power Delivery specification Revision 3.0..
Allowed values:
0: NoEffect: No effect
1: Enabled: FRS Tx signaling enabled
Bit 18: Rdch condition drive.
Allowed values:
0: NoEffect: No effect
1: ConditionDrive: Rdch condition drive
Bit 20: CC1 Type-C detector disable The bit disables the Type-C detector on the CC1 line. When enabled, the Type-C detector for CC1 is configured through ANAMODE and ANASUBMODE[1:0]..
Allowed values:
0: Enabled: Type-C detector on the CCx line enabled
1: Disabled: Type-C detector on the CCx line disabled
Bit 21: CC2 Type-C detector disable The bit disables the Type-C detector on the CC2 line. When enabled, the Type-C detector for CC2 is configured through ANAMODE and ANASUBMODE[1:0]..
Allowed values:
0: Enabled: Type-C detector on the CCx line enabled
1: Disabled: Type-C detector on the CCx line disabled
UCPD interrupt mask register
Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified
15/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FRSEVTIE
r |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TYPECEVT2IE
rw |
TYPECEVT1IE
rw |
RXMSGENDIE
rw |
RXOVRIE
rw |
RXHRSTDETIE
rw |
RXORDDETIE
rw |
RXNEIE
rw |
TXUNDIE
rw |
HRSTSENTIE
rw |
HRSTDISCIE
rw |
TXMSGABTIE
rw |
TXMSGSENTIE
rw |
TXMSGDISCIE
rw |
TXISIE
rw |
Bit 0: TXIS interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 1: TXMSGDISC interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 2: TXMSGSENT interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 3: TXMSGABT interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 4: HRSTDISC interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 5: HRSTSENT interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 6: TXUND interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 8: RXNE interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 9: RXORDDET interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 10: RXHRSTDET interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 11: RXOVR interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 12: RXMSGEND interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 14: TYPECEVT1 interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 15: TYPECEVT2 interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 20: FRSEVT interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
UCPD status register
Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified
18/18 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FRSEVT
r |
TYPEC_VSTATE_CC2
r |
TYPEC_VSTATE_CC1
r |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TYPECEVT2
r |
TYPECEVT1
r |
RXERR
r |
RXMSGEND
r |
RXOVR
r |
RXHRSTDET
r |
RXORDDET
r |
RXNE
r |
TXUND
r |
HRSTSENT
r |
HRSTDISC
r |
TXMSGABT
r |
TXMSGSENT
r |
TXMSGDISC
r |
TXIS
r |
Bit 0: Transmit interrupt status The flag indicates that the UCPD_TXDR register is empty and new data write is required (as the amount of data sent has not reached the payload size defined in the TXPAYSZ bitfield). The flag is cleared with the data write into the UCPD_TXDR register..
Allowed values:
0: NotRequired: New Tx data write not required
1: Required: New Tx data write required
Bit 1: Message transmission discarded The flag indicates that a message transmission was dropped. The flag is cleared by setting the TXMSGDISCCF bit. Transmission of a message can be dropped if there is a concurrent receive in progress or at excessive noise on the line. After a Tx message is discarded, the flag is only raised when the CC line becomes idle..
Allowed values:
0: NotDiscarded: No Tx message discarded
1: Discarded: Tx message discarded
Bit 2: Message transmission completed The flag indicates the completion of packet transmission. It is cleared by setting the TXMSGSENTCF bit. In the event of a message transmission interrupted by a Hard Reset, the flag is not raised..
Allowed values:
0: NotCompleted: No Tx message completed
1: Completed: Tx message completed
Bit 3: Transmit message abort The flag indicates that a Tx message is aborted due to a subsequent Hard Reset message send request taking priority during transmit. It is cleared by setting the TXMSGABTCF bit..
Allowed values:
0: NoAbort: No transmit message abort
1: Abort: Transmit message abort
Bit 4: Hard Reset discarded The flag indicates that the Hard Reset message is discarded. The flag is cleared by setting the HRSTDISCCF bit..
Allowed values:
0: NotDiscarded: No Hard Reset discarded
1: Discarded: Hard Reset discarded
Bit 5: Hard Reset message sent The flag indicates that the Hard Reset message is sent. The flag is cleared by setting the HRSTSENTCF bit..
Allowed values:
0: NotSent: No Hard Reset message sent
1: Sent: Hard Reset message sent
Bit 6: Tx data underrun detection The flag indicates that the Tx data register (UCPD_TXDR) was not written in time for a transmit message to execute normally. It is cleared by setting the TXUNDCF bit..
Allowed values:
0: NoUnderrun: No Tx data underrun detected
1: Underrun: Tx data underrun detected
Bit 8: Receive data register not empty detection The flag indicates that the UCPD_RXDR register is not empty. It is automatically cleared upon reading UCPD_RXDR..
Allowed values:
0: Empty: Rx data register empty
1: NotEmpty: Rx data register not empty
Bit 9: Rx ordered set (4 K-codes) detection The flag indicates the detection of an ordered set. The relevant information is stored in the RXORDSET[2:0] bitfield of the UCPD_RX_ORDSET register. It is cleared by setting the RXORDDETCF bit..
Allowed values:
0: NoOrderedSet: No ordered set detected
1: OrderedSet: Ordered set detected
Bit 10: Rx Hard Reset receipt detection The flag indicates the receipt of valid Hard Reset message. It is cleared by setting the RXHRSTDETCF bit..
Allowed values:
0: NoHardReset: Hard Reset not received
1: HardReset: Hard Reset received
Bit 11: Rx data overflow detection The flag indicates Rx data buffer overflow. It is cleared by setting the RXOVRCF bit. The buffer overflow can occur if the received data are not read fast enough..
Allowed values:
0: NoOverflow: No overflow
1: Overflow: Overflow
Bit 12: Rx message received The flag indicates whether a message (except Hard Reset message) has been received, regardless the CRC value. The flag is cleared by setting the RXMSGENDCF bit. The RXERR flag set when the RXMSGEND flag goes high indicates errors in the last-received message..
Allowed values:
0: NoNewMessage: No new Rx message received
1: NewMessage: A new Rx message received
Bit 13: Receive message error The flag indicates errors of the last Rx message declared (via RXMSGEND), such as incorrect CRC or truncated message (a line becoming static before EOP is met). It is asserted whenever the RXMSGEND flag is set..
Allowed values:
0: NoError: No error detected
1: Error: Error(s) detected
Bit 14: Type-C voltage level event on CC1 line The flag indicates a change of the TYPEC_VSTATE_CC1[1:0] bitfield value, which corresponds to a new Type-C event. It is cleared by setting the TYPECEVT2CF bit..
Allowed values:
0: NoNewEvent: No new event
1: NewEvent: A new Type-C event occurred
Bit 15: Type-C voltage level event on CC2 line The flag indicates a change of the TYPEC_VSTATE_CC2[1:0] bitfield value, which corresponds to a new Type-C event. It is cleared by setting the TYPECEVT2CF bit..
Allowed values:
0: NoNewEvent: No new event
1: NewEvent: A new Type-C event occurred
Bits 16-17: The status bitfield indicates the voltage level on the CC1 line in its steady state. The voltage variation on the CC1 line during USB PD messages due to the BMC PHY modulation does not impact the bitfield value..
Allowed values:
0: Lowest: Lowest
1: Low: Low
2: High: High
3: Highest: Highest
Bits 18-19: CC2 line voltage level The status bitfield indicates the voltage level on the CC2 line in its steady state. The voltage variation on the CC2 line during USB PD messages due to the BMC PHY modulation does not impact the bitfield value..
Allowed values:
0: Lowest: Lowest
1: Low: Low
2: High: High
3: Highest: Highest
Bit 20: FRS detection event The flag is cleared by setting the FRSEVTCF bit..
Allowed values:
0: NoNewEvent: No new event
1: NewEvent: New FRS receive event occurred
UCPD interrupt clear register
Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified
13/13 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FRSEVTCF
w |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TYPECEVT2CF
w |
TYPECEVT1CF
w |
RXMSGENDCF
w |
RXOVRCF
w |
RXHRSTDETCF
w |
RXORDDETCF
w |
TXUNDCF
w |
HRSTSENTCF
w |
HRSTDISCCF
w |
TXMSGABTCF
w |
TXMSGSENTCF
w |
TXMSGDISCCF
w |
Bit 1: Tx message discard flag (TXMSGDISC) clear Setting the bit clears the TXMSGDISC flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 2: Tx message send flag (TXMSGSENT) clear Setting the bit clears the TXMSGSENT flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 3: Tx message abort flag (TXMSGABT) clear Setting the bit clears the TXMSGABT flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 4: Hard reset discard flag (HRSTDISC) clear Setting the bit clears the HRSTDISC flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 5: Hard reset send flag (HRSTSENT) clear Setting the bit clears the HRSTSENT flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 6: Tx underflow flag (TXUND) clear Setting the bit clears the TXUND flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 9: Rx ordered set detect flag (RXORDDET) clear Setting the bit clears the RXORDDET flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 10: Rx Hard Reset detect flag (RXHRSTDET) clear Setting the bit clears the RXHRSTDET flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 11: Rx overflow flag (RXOVR) clear Setting the bit clears the RXOVR flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 12: Rx message received flag (RXMSGEND) clear Setting the bit clears the RXMSGEND flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 14: Type-C CC1 event flag (TYPECEVT1) clear Setting the bit clears the TYPECEVT1 flag in the UCPD_SR register.
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 15: Type-C CC2 line event flag (TYPECEVT2) clear Setting the bit clears the TYPECEVT2 flag in the UCPD_SR register.
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 20: FRS event flag (FRSEVT) clear Setting the bit clears the FRSEVT flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
UCPD Tx ordered set type register
Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXORDSET
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TXORDSET
rw |
Bits 0-19: Ordered set to transmit The bitfield determines a full 20-bit sequence to transmit, consisting of four K-codes, each of five bits, defining the packet to transmit. The bit 0 (bit 0 of K-code1) is the first, the bit 19 (bit 4 of code4) the last..
Allowed values: 0x0-0xfffff
UCPD Tx payload size register
Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXPAYSZ
rw |
Bits 0-9: Payload size yet to transmit The bitfield is modified by software and by hardware. It contains the number of bytes of a payload (including header but excluding CRC) yet to transmit: each time a data byte is written into the UCPD_TXDR register, the bitfield value decrements and the TXIS bit is set, except when the bitfield value reaches zero. The enumerated values are standard payload sizes before the start of transmission..
Allowed values: 0x0-0x3ff
UCPD Tx data register
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXDATA
rw |
UCPD Rx ordered set register
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
3/3 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXSOPKINVALID
r |
RXSOP3OF4
r |
RXORDSET
r |
Bits 0-2: Rx ordered set code detected.
Allowed values:
0: SOP: SOP code detected in receiver
1: SOPPrime: SOP' code detected in receiver
2: SOPDoublePrime: SOP'' code detected in receiver
3: SOPPrimeDebug: SOP'_Debug detected in receiver
4: SOPDoublePrimeDebug: SOP''_Debug detected in receiver
5: CableReset: Cable Reset detected in receiver
6: SOPExtension1: SOP extension #1 detected in receiver
7: SOPExtension2: SOP extension #2 detected in receiver
Bit 3: The bit indicates the number of correct For debug purposes only..
Allowed values:
0: AllCorrect: 4 correct K-codes out of 4
1: OneIncorrect: 3 correct K-codes out of 4
Bits 4-6: The bitfield is for debug purposes only. Others: Invalid.
Allowed values:
0: Valid: No K-code corrupted
1: FirstCorrupted: First K-code corrupted
2: SecondCorrupted: Second K-code corrupted
3: ThirdCorrupted: Third K-code corrupted
4: FourthCorrupted: Fourth K-code corrupted
UCPD Rx payload size register
Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXPAYSZ
r |
Bits 0-9: Rx payload size received This bitfield contains the number of bytes of a payload (including header but excluding CRC) received: each time a new data byte is received in the UCPD_RXDR register, the bitfield value increments and the RXMSGEND flag is set (and an interrupt generated if enabled). The bitfield may return a spurious value when a byte reception is ongoing (the RXMSGEND flag is low)..
Allowed values: 0x0-0x3ff
UCPD receive data register
Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXDATA
r |
UCPD Rx ordered set extension register 1
Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
0x4000a400: USB Power Delivery interface
99/99 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CFGR1 | ||||||||||||||||||||||||||||||||
0x4 | CFGR2 | ||||||||||||||||||||||||||||||||
0x8 | CFGR3 | ||||||||||||||||||||||||||||||||
0xc | CR | ||||||||||||||||||||||||||||||||
0x10 | IMR | ||||||||||||||||||||||||||||||||
0x14 | SR | ||||||||||||||||||||||||||||||||
0x18 | ICR | ||||||||||||||||||||||||||||||||
0x1c | TX_ORDSETR | ||||||||||||||||||||||||||||||||
0x20 | TX_PAYSZR | ||||||||||||||||||||||||||||||||
0x24 | TXDR | ||||||||||||||||||||||||||||||||
0x28 | RX_ORDSETR | ||||||||||||||||||||||||||||||||
0x2c | RX_PAYSZR | ||||||||||||||||||||||||||||||||
0x30 | RXDR | ||||||||||||||||||||||||||||||||
0x34 | RX_ORDEXTR1 | ||||||||||||||||||||||||||||||||
0x38 | RX_ORDEXTR2 |
UCPD configuration register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
16/16 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
UCPDEN
rw |
RXDMAEN
rw |
TXDMAEN
rw |
RXORDSETEN8
N/A |
RXORDSETEN7
N/A |
RXORDSETEN6
N/A |
RXORDSETEN5
N/A |
RXORDSETEN4
N/A |
RXORDSETEN3
N/A |
RXORDSETEN2
N/A |
RXORDSETEN1
N/A |
RXORDSETEN0
N/A |
PSC_USBPDCLK
rw |
|||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TRANSWIN
rw |
IFRGAP
rw |
HBITCLKDIV
rw |
Bits 0-5: Division ratio for producing half-bit clock The bitfield determines the division ratio (the bitfield value plus one) of a ucpd_clk divider producing half-bit clock (hbit_clk)..
Allowed values: 0x0-0x3f
Bits 6-10: Division ratio for producing inter-frame gap timer clock The bitfield determines the division ratio (the bitfield value minus one) of a ucpd_clk divider producing inter-frame gap timer clock (tInterFrameGap). The division ratio 15 is to apply for Tx clock at the USB PD 2.0 specification nominal value. The division ratios below 15 are to apply for Tx clock below nominal, and the division ratios above 15 for Tx clock above nominal..
Allowed values: 0x1-0x1f
Bits 11-15: Transition window duration The bitfield determines the division ratio (the bitfield value minus one) of a hbit_clk divider producing tTransitionWindow interval. Set a value that produces an interval of 12 to 20 us, taking into account the ucpd_clk frequency and the HBITCLKDIV[5:0] bitfield setting..
Allowed values: 0x1-0x1f
Bits 17-19: Pre-scaler division ratio for generating ucpd_clk The bitfield determines the division ratio of a kernel clock pre-scaler producing UCPD peripheral clock (ucpd_clk). It is recommended to use the pre-scaler so as to set the ucpd_clk frequency in the range from 6 to 9 MHz..
Allowed values:
0: Div1: Divide by 1
1: Div2: Divide by 2
2: Div4: Divide by 4
3: Div8: Divide by 8
4: Div16: Divide by 16
Bit 20: SOP detection.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 21: SOP' detection.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 22: SOP'' detection.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 23: Hard Reset detection.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 24: Cable Detect reset.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 25: SOP'_Debug.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 26: SOP'' Debug.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 27: SOP extension #1.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 28: SOP extension #2.
Allowed values:
0: Disabled: Flag disabled
1: Enabled: Flag enabled
Bit 29: Transmission DMA mode enable When set, the bit enables DMA mode for transmission..
Allowed values:
0: Disabled: DMA mode for transmission disabled
1: Enabled: DMA mode for transmission enabled
Bit 30: Reception DMA mode enable When set, the bit enables DMA mode for reception..
Allowed values:
0: Disabled: DMA mode for reception disabled
1: Enabled: DMA mode for reception enabled
Bit 31: UCPD peripheral enable General enable of the UCPD peripheral. Upon disabling, the peripheral instantly quits any ongoing activity and all control bits and bitfields default to their reset values. They must be set to their desired values each time the peripheral transits from disabled to enabled state..
Allowed values:
0: Disabled: UCPD peripheral disabled
1: Enabled: UCPD peripheral enabled
UCPD configuration register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
4/4 fields covered.
Bit 0: BMC decoder Rx pre-filter enable The sampling clock is that of the receiver (that is, after pre-scaler)..
Allowed values:
0: Enabled: Rx pre-filter enabled
1: Disabled: Rx pre-filter disabled
Bit 1: BMC decoder Rx pre-filter sampling method Number of consistent consecutive samples before confirming a new value..
Allowed values:
0: Samp3: 3 samples
1: Samp2: 2 samples
Bit 2: Force ClkReq clock request.
Allowed values:
0: NoForce: Do not force clock request
1: Force: Force clock request
Bit 3: Wakeup from Stop mode enable Setting the bit enables the UCPD_ASYNC_INT signal..
Allowed values:
0: Disabled: Disabled
1: Enabled: Enabled
UCPD configuration register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
6/6 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TRIM2_NG_CC3A0
rw |
TRIM2_NG_CC1A5
rw |
TRIM2_NG_CCRPD
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TRIM1_NG_CC3A0
rw |
TRIM1_NG_CC1A5
rw |
TRIM1_NG_CCRPD
rw |
Bits 0-3: SW trim value for RPD resistors on the CC1 line.
Allowed values: 0x0-0xf
Bits 4-8: SW trim value for RP1A5 resistors on the CC1 line.
Allowed values: 0x0-0xf
Bits 9-12: SW trim value for RP3A0 resistors on the CC1 line.
Allowed values: 0x0-0xf
Bits 16-19: SW trim value for RPD resistors on the CC2 line.
Allowed values: 0x0-0xf
Bits 20-24: SW trim value for RP1A5 resistors on the CC2 line.
Allowed values: 0x0-0xf
Bits 25-28: SW trim value for RP3A0 resistors on the CC2 line.
Allowed values: 0x0-0xf
UCPD control register
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
17/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CC2TCDIS
rw |
CC1TCDIS
rw |
RDCH
rw |
FRSTX
rw |
FRSRXEN
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DBATTEN
rw |
CC2VCONNEN
rw |
CC1VCONNEN
rw |
CCENABLE
rw |
ANAMODE
rw |
ANASUBMODE
rw |
PHYCCSEL
rw |
PHYRXEN
rw |
RXMODE
rw |
TXHRST
rw |
TXSEND
rw |
TXMODE
rw |
Bits 0-1: Type of Tx packet.
Allowed values:
0: RegisterSet: Transmission of Tx packet previously defined in other registers
1: CableReset: Cable Reset sequence
2: BISTTest: BIST test sequence (BIST Carrier Mode 2)
Bit 2: Command to send a Tx packet The bit is cleared by hardware as soon as the packet transmission begins or is discarded..
Allowed values:
0: NoEffect: No effect
1: Start: Start Tx packet transmission
Bit 3: Command to send a Tx Hard Reset The bit is cleared by hardware as soon as the message transmission begins or is discarded..
Allowed values:
0: NoEffect: No effect
1: Start: Start Tx Hard Reset message
Bit 4: Receiver mode Determines the mode of the receiver. When the bit is set, RXORDSET behaves normally, RXDR no longer receives bytes yet the CRC checking still proceeds as for a normal message..
Allowed values:
0: Normal: Normal receive mode
1: BIST: BIST receive mode (BIST test data mode)
Bit 5: USB Power Delivery receiver enable Both CC1 and CC2 receivers are disabled when the bit is cleared. Only the CC receiver selected via the PHYCCSEL bit is enabled when the bit is set..
Allowed values:
0: Disabled: USB Power Delivery receiver disabled
1: Enabled: USB Power Delivery receiver enabled
Bit 6: CC1/CC2 line selector for USB Power Delivery signaling The selection depends on the cable orientation as discovered at attach..
Allowed values:
0: CC1: Use CC1 IO for Power Delivery communication
1: CC2: Use CC2 IO for Power Delivery communication
Bits 7-8: Analog PHY sub-mode Refer to TYPEC_VSTATE_CCx for the effect of this bitfield..
Allowed values:
0: Disabled: Disabled
1: Rp_DefaultUSB: Default USB Rp
2: Rp_1_5A: 1.5A Rp
3: Rp_3A: 3A Rp
Bit 9: Analog PHY operating mode The bit takes effect upon setting the UCPDx_STROBE bit of the SYS_CONFIG register. The use of CC1 and CC2 depends on CCENABLE. Refer to ANAMODE, ANASUBMODE and link with TYPEC_VSTATE_CCx for the effect of this bitfield in conjunction with ANASUBMODE[1:0]..
Allowed values:
0: Source: Source
1: Sink: Sink
Bits 10-11: CC line enable This bitfield enables CC1 and CC2 line analog PHYs (pull-ups and pull-downs) according to ANAMODE and ANASUBMODE[1:0] setting. A single line PHY can be enabled when, for example, the other line is driven by VCONN via an external VCONN switch. Enabling both PHYs is the normal usage for sink/source..
Allowed values:
0: Disabled: Both PHYs disabled
1: CC1Enabled: CC1 PHY enabled
2: CC2Enabled: CC2 PHY enabled
3: BothEnabled: CC1 and CC2 PHYs enabled
Bit 13: VCONN switch enable for CC1.
Allowed values:
0: Disabled: VCONN switch for CC1 disabled
1: Enabled: VCONN switch for CC1 enabled
Bit 14: VCONN switch enable for CC2.
Allowed values:
0: Disabled: VCONN switch for CC2 disabled
1: Enabled: VCONN switch for CC2 enabled
Bit 15: Dead battery function enable The bit takes effect upon setting the USBPDstrobe bit of the SYS_CONFIG register. Dead battery function only operates if the external circuit is appropriately configured..
Allowed values:
0: Disabled: Dead battery function disabled
1: Enabled: Dead battery function enabled
Bit 16: FRS event detection enable Setting the bit enables FRS Rx event (FRSEVT) detection on the CC line selected through the PHYCCSEL bit. 0: Disable Clear the bit when the device is attached to an FRS-incapable source/sink..
Allowed values:
0: Disabled: FRS Rx event detection disabled
1: Enabled: FRS Rx event detection enabled
Bit 17: FRS Tx signaling enable. Setting the bit enables FRS Tx signaling. The bit is cleared by hardware after a delay respecting the USB Power Delivery specification Revision 3.0..
Allowed values:
0: NoEffect: No effect
1: Enabled: FRS Tx signaling enabled
Bit 18: Rdch condition drive.
Allowed values:
0: NoEffect: No effect
1: ConditionDrive: Rdch condition drive
Bit 20: CC1 Type-C detector disable The bit disables the Type-C detector on the CC1 line. When enabled, the Type-C detector for CC1 is configured through ANAMODE and ANASUBMODE[1:0]..
Allowed values:
0: Enabled: Type-C detector on the CCx line enabled
1: Disabled: Type-C detector on the CCx line disabled
Bit 21: CC2 Type-C detector disable The bit disables the Type-C detector on the CC2 line. When enabled, the Type-C detector for CC2 is configured through ANAMODE and ANASUBMODE[1:0]..
Allowed values:
0: Enabled: Type-C detector on the CCx line enabled
1: Disabled: Type-C detector on the CCx line disabled
UCPD interrupt mask register
Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified
15/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FRSEVTIE
r |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TYPECEVT2IE
rw |
TYPECEVT1IE
rw |
RXMSGENDIE
rw |
RXOVRIE
rw |
RXHRSTDETIE
rw |
RXORDDETIE
rw |
RXNEIE
rw |
TXUNDIE
rw |
HRSTSENTIE
rw |
HRSTDISCIE
rw |
TXMSGABTIE
rw |
TXMSGSENTIE
rw |
TXMSGDISCIE
rw |
TXISIE
rw |
Bit 0: TXIS interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 1: TXMSGDISC interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 2: TXMSGSENT interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 3: TXMSGABT interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 4: HRSTDISC interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 5: HRSTSENT interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 6: TXUND interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 8: RXNE interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 9: RXORDDET interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 10: RXHRSTDET interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 11: RXOVR interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 12: RXMSGEND interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 14: TYPECEVT1 interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 15: TYPECEVT2 interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
Bit 20: FRSEVT interrupt enable.
Allowed values:
0: Disabled: Interrupt disabled
1: Enabled: Interrupt enabled
UCPD status register
Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified
18/18 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FRSEVT
r |
TYPEC_VSTATE_CC2
r |
TYPEC_VSTATE_CC1
r |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TYPECEVT2
r |
TYPECEVT1
r |
RXERR
r |
RXMSGEND
r |
RXOVR
r |
RXHRSTDET
r |
RXORDDET
r |
RXNE
r |
TXUND
r |
HRSTSENT
r |
HRSTDISC
r |
TXMSGABT
r |
TXMSGSENT
r |
TXMSGDISC
r |
TXIS
r |
Bit 0: Transmit interrupt status The flag indicates that the UCPD_TXDR register is empty and new data write is required (as the amount of data sent has not reached the payload size defined in the TXPAYSZ bitfield). The flag is cleared with the data write into the UCPD_TXDR register..
Allowed values:
0: NotRequired: New Tx data write not required
1: Required: New Tx data write required
Bit 1: Message transmission discarded The flag indicates that a message transmission was dropped. The flag is cleared by setting the TXMSGDISCCF bit. Transmission of a message can be dropped if there is a concurrent receive in progress or at excessive noise on the line. After a Tx message is discarded, the flag is only raised when the CC line becomes idle..
Allowed values:
0: NotDiscarded: No Tx message discarded
1: Discarded: Tx message discarded
Bit 2: Message transmission completed The flag indicates the completion of packet transmission. It is cleared by setting the TXMSGSENTCF bit. In the event of a message transmission interrupted by a Hard Reset, the flag is not raised..
Allowed values:
0: NotCompleted: No Tx message completed
1: Completed: Tx message completed
Bit 3: Transmit message abort The flag indicates that a Tx message is aborted due to a subsequent Hard Reset message send request taking priority during transmit. It is cleared by setting the TXMSGABTCF bit..
Allowed values:
0: NoAbort: No transmit message abort
1: Abort: Transmit message abort
Bit 4: Hard Reset discarded The flag indicates that the Hard Reset message is discarded. The flag is cleared by setting the HRSTDISCCF bit..
Allowed values:
0: NotDiscarded: No Hard Reset discarded
1: Discarded: Hard Reset discarded
Bit 5: Hard Reset message sent The flag indicates that the Hard Reset message is sent. The flag is cleared by setting the HRSTSENTCF bit..
Allowed values:
0: NotSent: No Hard Reset message sent
1: Sent: Hard Reset message sent
Bit 6: Tx data underrun detection The flag indicates that the Tx data register (UCPD_TXDR) was not written in time for a transmit message to execute normally. It is cleared by setting the TXUNDCF bit..
Allowed values:
0: NoUnderrun: No Tx data underrun detected
1: Underrun: Tx data underrun detected
Bit 8: Receive data register not empty detection The flag indicates that the UCPD_RXDR register is not empty. It is automatically cleared upon reading UCPD_RXDR..
Allowed values:
0: Empty: Rx data register empty
1: NotEmpty: Rx data register not empty
Bit 9: Rx ordered set (4 K-codes) detection The flag indicates the detection of an ordered set. The relevant information is stored in the RXORDSET[2:0] bitfield of the UCPD_RX_ORDSET register. It is cleared by setting the RXORDDETCF bit..
Allowed values:
0: NoOrderedSet: No ordered set detected
1: OrderedSet: Ordered set detected
Bit 10: Rx Hard Reset receipt detection The flag indicates the receipt of valid Hard Reset message. It is cleared by setting the RXHRSTDETCF bit..
Allowed values:
0: NoHardReset: Hard Reset not received
1: HardReset: Hard Reset received
Bit 11: Rx data overflow detection The flag indicates Rx data buffer overflow. It is cleared by setting the RXOVRCF bit. The buffer overflow can occur if the received data are not read fast enough..
Allowed values:
0: NoOverflow: No overflow
1: Overflow: Overflow
Bit 12: Rx message received The flag indicates whether a message (except Hard Reset message) has been received, regardless the CRC value. The flag is cleared by setting the RXMSGENDCF bit. The RXERR flag set when the RXMSGEND flag goes high indicates errors in the last-received message..
Allowed values:
0: NoNewMessage: No new Rx message received
1: NewMessage: A new Rx message received
Bit 13: Receive message error The flag indicates errors of the last Rx message declared (via RXMSGEND), such as incorrect CRC or truncated message (a line becoming static before EOP is met). It is asserted whenever the RXMSGEND flag is set..
Allowed values:
0: NoError: No error detected
1: Error: Error(s) detected
Bit 14: Type-C voltage level event on CC1 line The flag indicates a change of the TYPEC_VSTATE_CC1[1:0] bitfield value, which corresponds to a new Type-C event. It is cleared by setting the TYPECEVT2CF bit..
Allowed values:
0: NoNewEvent: No new event
1: NewEvent: A new Type-C event occurred
Bit 15: Type-C voltage level event on CC2 line The flag indicates a change of the TYPEC_VSTATE_CC2[1:0] bitfield value, which corresponds to a new Type-C event. It is cleared by setting the TYPECEVT2CF bit..
Allowed values:
0: NoNewEvent: No new event
1: NewEvent: A new Type-C event occurred
Bits 16-17: The status bitfield indicates the voltage level on the CC1 line in its steady state. The voltage variation on the CC1 line during USB PD messages due to the BMC PHY modulation does not impact the bitfield value..
Allowed values:
0: Lowest: Lowest
1: Low: Low
2: High: High
3: Highest: Highest
Bits 18-19: CC2 line voltage level The status bitfield indicates the voltage level on the CC2 line in its steady state. The voltage variation on the CC2 line during USB PD messages due to the BMC PHY modulation does not impact the bitfield value..
Allowed values:
0: Lowest: Lowest
1: Low: Low
2: High: High
3: Highest: Highest
Bit 20: FRS detection event The flag is cleared by setting the FRSEVTCF bit..
Allowed values:
0: NoNewEvent: No new event
1: NewEvent: New FRS receive event occurred
UCPD interrupt clear register
Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified
13/13 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FRSEVTCF
w |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TYPECEVT2CF
w |
TYPECEVT1CF
w |
RXMSGENDCF
w |
RXOVRCF
w |
RXHRSTDETCF
w |
RXORDDETCF
w |
TXUNDCF
w |
HRSTSENTCF
w |
HRSTDISCCF
w |
TXMSGABTCF
w |
TXMSGSENTCF
w |
TXMSGDISCCF
w |
Bit 1: Tx message discard flag (TXMSGDISC) clear Setting the bit clears the TXMSGDISC flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 2: Tx message send flag (TXMSGSENT) clear Setting the bit clears the TXMSGSENT flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 3: Tx message abort flag (TXMSGABT) clear Setting the bit clears the TXMSGABT flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 4: Hard reset discard flag (HRSTDISC) clear Setting the bit clears the HRSTDISC flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 5: Hard reset send flag (HRSTSENT) clear Setting the bit clears the HRSTSENT flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 6: Tx underflow flag (TXUND) clear Setting the bit clears the TXUND flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 9: Rx ordered set detect flag (RXORDDET) clear Setting the bit clears the RXORDDET flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 10: Rx Hard Reset detect flag (RXHRSTDET) clear Setting the bit clears the RXHRSTDET flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 11: Rx overflow flag (RXOVR) clear Setting the bit clears the RXOVR flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 12: Rx message received flag (RXMSGEND) clear Setting the bit clears the RXMSGEND flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 14: Type-C CC1 event flag (TYPECEVT1) clear Setting the bit clears the TYPECEVT1 flag in the UCPD_SR register.
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 15: Type-C CC2 line event flag (TYPECEVT2) clear Setting the bit clears the TYPECEVT2 flag in the UCPD_SR register.
Allowed values:
1: Clear: Clear flag in UCPD_SR
Bit 20: FRS event flag (FRSEVT) clear Setting the bit clears the FRSEVT flag in the UCPD_SR register..
Allowed values:
1: Clear: Clear flag in UCPD_SR
UCPD Tx ordered set type register
Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXORDSET
rw |
|||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
TXORDSET
rw |
Bits 0-19: Ordered set to transmit The bitfield determines a full 20-bit sequence to transmit, consisting of four K-codes, each of five bits, defining the packet to transmit. The bit 0 (bit 0 of K-code1) is the first, the bit 19 (bit 4 of code4) the last..
Allowed values: 0x0-0xfffff
UCPD Tx payload size register
Offset: 0x20, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXPAYSZ
rw |
Bits 0-9: Payload size yet to transmit The bitfield is modified by software and by hardware. It contains the number of bytes of a payload (including header but excluding CRC) yet to transmit: each time a data byte is written into the UCPD_TXDR register, the bitfield value decrements and the TXIS bit is set, except when the bitfield value reaches zero. The enumerated values are standard payload sizes before the start of transmission..
Allowed values: 0x0-0x3ff
UCPD Tx data register
Offset: 0x24, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXDATA
rw |
UCPD Rx ordered set register
Offset: 0x28, size: 32, reset: 0x00000000, access: Unspecified
3/3 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXSOPKINVALID
r |
RXSOP3OF4
r |
RXORDSET
r |
Bits 0-2: Rx ordered set code detected.
Allowed values:
0: SOP: SOP code detected in receiver
1: SOPPrime: SOP' code detected in receiver
2: SOPDoublePrime: SOP'' code detected in receiver
3: SOPPrimeDebug: SOP'_Debug detected in receiver
4: SOPDoublePrimeDebug: SOP''_Debug detected in receiver
5: CableReset: Cable Reset detected in receiver
6: SOPExtension1: SOP extension #1 detected in receiver
7: SOPExtension2: SOP extension #2 detected in receiver
Bit 3: The bit indicates the number of correct For debug purposes only..
Allowed values:
0: AllCorrect: 4 correct K-codes out of 4
1: OneIncorrect: 3 correct K-codes out of 4
Bits 4-6: The bitfield is for debug purposes only. Others: Invalid.
Allowed values:
0: Valid: No K-code corrupted
1: FirstCorrupted: First K-code corrupted
2: SecondCorrupted: Second K-code corrupted
3: ThirdCorrupted: Third K-code corrupted
4: FourthCorrupted: Fourth K-code corrupted
UCPD Rx payload size register
Offset: 0x2c, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXPAYSZ
r |
Bits 0-9: Rx payload size received This bitfield contains the number of bytes of a payload (including header but excluding CRC) received: each time a new data byte is received in the UCPD_RXDR register, the bitfield value increments and the RXMSGEND flag is set (and an interrupt generated if enabled). The bitfield may return a spurious value when a byte reception is ongoing (the RXMSGEND flag is low)..
Allowed values: 0x0-0x3ff
UCPD receive data register
Offset: 0x30, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXDATA
r |
UCPD Rx ordered set extension register 1
Offset: 0x34, size: 32, reset: 0x00000000, access: Unspecified
1/1 fields covered.
0x40013800: Universal synchronous asynchronous receiver transmitter
47/124 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | CR3 | ||||||||||||||||||||||||||||||||
0xc | BRR | ||||||||||||||||||||||||||||||||
0x10 | GTPR | ||||||||||||||||||||||||||||||||
0x14 | RTOR | ||||||||||||||||||||||||||||||||
0x18 | RQR | ||||||||||||||||||||||||||||||||
0x1c | ISR | ||||||||||||||||||||||||||||||||
0x20 | ICR | ||||||||||||||||||||||||||||||||
0x24 | RDR | ||||||||||||||||||||||||||||||||
0x28 | TDR | ||||||||||||||||||||||||||||||||
0x2c | PRESC |
Control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
4/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXFFIE
rw |
TXFEIE
rw |
FIFOEN
rw |
M1
rw |
EOBIE
rw |
RTOIE
rw |
DEAT
rw |
DEDT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OVER8
rw |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXEIE
rw |
TCIE
rw |
RXNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. In Smartcard mode, (SCEN = 1), the SCLK is always available when CLKEN = 1, regardless of the UE bit value..
Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it when exit from low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: USART not able to wake up the MCU from Stop mode
1: Enabled: USART able to wake up the MCU from Stop mode
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to '1'. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the USART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..
Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. ..
Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI master/slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..
Allowed values:
0: Disabled: FIFO mode is disabled
1: Enabled: FIFO mode is enabled
Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when TXFE = 1 in the USART_ISR register
Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when RXFF = 1 in the USART_ISR register
Control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
2/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADD
rw |
RTOEN
rw |
ABRMOD
rw |
ABREN
rw |
MSBFIRST
rw |
DATAINV
rw |
TXINV
rw |
RXINV
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SWAP
rw |
LINEN
rw |
STOP
rw |
CLKEN
rw |
CPOL
rw |
CPHA
rw |
LBCL
rw |
LBDIE
rw |
LBDL
rw |
ADDM7
rw |
DIS_NSS
rw |
SLVEN
rw |
Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Slave mode disabled
1: Enabled: Slave mode enabled
Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: SPI slave selection depends on NSS input pin
1: Enabled: SPI slave is always selected and NSS input pin is ignored
Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..
Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the SCLK pin in synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: Clock phase This bit is used to select the phase of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see and ) This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Clock enable This bit enables the user to enable the SCLK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to . In Smartcard mode, in order to provide correctly the SCLK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 UE = 1.
Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 24-31: Address of the USART node ADD[7:4]: These bits give the address of the USART node or a character code to be recognized. They are used to wake up the MCU with 7-bit address mark detection in multiprocessor communication during Mute mode or low-power mode. The MSB of the character sent by the transmitter should be equal to 1. They can also be used for character detection during normal reception, Mute mode inactive (for example, end of block detection in ModBus protocol). In this case, the whole received character (8-bit) is compared to the ADD[7:0] value and CMF flag is set on match. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0). ADD[3:0]: These bits give the address of the USART node or a character code to be recognized. They are used for wakeup with address mark detection, in multiprocessor communication during Mute mode or low-power mode. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0)..
Control register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
7/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFTCFG
rw |
RXFTIE
rw |
RXFTCFG
rw |
TCBGTIE
rw |
TXFTIE
rw |
WUFIE
rw |
WUS
rw |
SCARCNT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DEP
rw |
DEM
rw |
DDRE
rw |
OVRDIS
rw |
ONEBIT
rw |
CTSIE
rw |
CTSE
rw |
RTSE
rw |
DMAT
rw |
DMAR
rw |
SCEN
rw |
NACK
rw |
HDSEL
rw |
IRLP
rw |
IREN
rw |
EIE
rw |
Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1 or UDR = 1 in the USART_ISR register)..
Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..
Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: DMA enable receiver This bit is set/reset by software.
Bit 7: DMA enable transmitter This bit is set/reset by software.
Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..
Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data is written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.
Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..
Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. ..
Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Address: WUF active on address match
2: Start: WuF active on Start bit detection
3: RXNE: WUF active on RXNE
Bit 22: Wakeup from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated whenever WUF=1 in the ISR register
Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Transmit FIFO reaches the threshold programmed in TXFTCFG
Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated whenever TCBGT=1 in the USART_ISR register
Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: RXFIFO reaches 1/8 of its depth
1: Depth_1_4: RXFIFO reaches 1/4 of its depth
2: Depth_1_2: RXFIFO reaches 1/2 of its depth
3: Depth_3_4: RXFIFO reaches 3/4 of its depth
4: Depth_7_8: RXFIFO reaches 7/8 of its depth
5: Full: RXFIFO becomes full
Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Receive FIFO reaches the threshold programmed in RXFTCFG
Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: TXFIFO reaches 1/8 of its depth
1: Depth_1_4: TXFIFO reaches 1/4 of its depth
2: Depth_1_2: TXFIFO reaches 1/2 of its depth
3: Depth_3_4: TXFIFO reaches 3/4 of its depth
4: Depth_7_8: TXFIFO reaches 7/8 of its depth
5: Empty: TXFIFO becomes empty
Baud rate register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BRR
rw |
Guard time and prescaler register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-7: Prescaler value In IrDA low-power and normal IrDA mode: PSC[7:0] = IrDA Normal and Low-Power baud rate PSC[7:0] is used to program the prescaler for dividing the USART source clock to achieve the low-power frequency: the source clock is divided by the value given in the register (8 significant bits): In Smartcard mode: PSC[4:0]=Prescaler value PSC[4:0] is used to program the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... 00100000: Divides the source clock by 32 (IrDA mode) ... 11111111: Divides the source clock by 255 (IrDA mode) This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. This bitfield is reserved and forced by hardware to '0' when the Smartcard and IrDA modes are not supported. Refer to ..
Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Receiver timeout register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Request register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
0/5 fields covered.
Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF flag in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software should wait for the TXE flag assertion before setting the SBKRQ bit..
Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..
Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..
Bit 4: Transmit data flush request When FIFO mode is disabled, writing '1' to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..
Interrupt & status register
Offset: 0x1c, size: 32, reset: 0x008000C0, access: read-only
28/28 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFT
r |
RXFT
r |
TCBGT
r |
RXFF
r |
TXFE
r |
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ABRF
r |
ABRE
r |
UDR
r |
EOBF
r |
RTOF
r |
CTS
r |
CTSIF
r |
LBDF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NECF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Tolerance of the USART receiver to clock deviation on page861). This error is associated with the character in the USART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the USART_CR1 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..
Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. It is set by hardware when the transmission of a frame containing data is complete and when TXFE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is is cleared by software, by writing 1 to the TCCF in the USART_ICR register or by a write to the USART_TDR register. Note: If TE bit is reset and no transmission is on going, the TC bit is immediately set..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). This bit is used during single buffer transmission..
Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to ..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..
Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if the EOBIE=1 in the USART_CR2 register. It is cleared by software, writing 1 to the EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to ..
Bit 13: SPI slave underrun error flag In slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to ..
Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_CR3 register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 23: TXFIFO empty This bit is set by hardware when TXFIFO is empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..
Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFOsize+1 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..
Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is '1'. Refer to on page835..
Allowed values:
0: NotCompleted: Transmission not completed
1: Completed: Transmission has completed
Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to '101', RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..
Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..
Interrupt flag clear register
Offset: 0x20, size: 32, reset: 0x00000000, access: write-only
4/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WUCF
w |
CMCF
w |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
UDRCF
w |
EOBCF
w |
RTOCF
w |
CTSCF
w |
LBDCF
w |
TCBGTCF
w |
TCCF
w |
TXFECF
w |
IDLECF
w |
ORECF
w |
NECF
w |
FECF
w |
PECF
w |
Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..
Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..
Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..
Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..
Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..
Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TXFE flag in the ISR register
Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..
Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TCBGT flag in the ISR register
Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to page835..
Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to.
Allowed values:
1: Clear: Clear the UDR flag in the ISR register
Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..
Bit 20: Wakeup from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
1: Clear: Clears the WUF flag in the ISR register
Receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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RDR
r |
Transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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TDR
rw |
Prescaler register
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESCALER
rw |
Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is 1011 i.e. input clock divided by 256..
Allowed values:
0: Div1: Input clock divided by 1
1: Div2: Input clock divided by 2
2: Div4: Input clock divided by 4
3: Div6: Input clock divided by 6
4: Div8: Input clock divided by 8
5: Div10: Input clock divided by 10
6: Div12: Input clock divided by 12
7: Div16: Input clock divided by 16
8: Div32: Input clock divided by 32
9: Div64: Input clock divided by 64
10: Div128: Input clock divided by 128
11: Div256: Input clock divided by 256
0x40004400: Universal synchronous asynchronous receiver transmitter
47/124 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
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0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | CR3 | ||||||||||||||||||||||||||||||||
0xc | BRR | ||||||||||||||||||||||||||||||||
0x10 | GTPR | ||||||||||||||||||||||||||||||||
0x14 | RTOR | ||||||||||||||||||||||||||||||||
0x18 | RQR | ||||||||||||||||||||||||||||||||
0x1c | ISR | ||||||||||||||||||||||||||||||||
0x20 | ICR | ||||||||||||||||||||||||||||||||
0x24 | RDR | ||||||||||||||||||||||||||||||||
0x28 | TDR | ||||||||||||||||||||||||||||||||
0x2c | PRESC |
Control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
4/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXFFIE
rw |
TXFEIE
rw |
FIFOEN
rw |
M1
rw |
EOBIE
rw |
RTOIE
rw |
DEAT
rw |
DEDT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OVER8
rw |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXEIE
rw |
TCIE
rw |
RXNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. In Smartcard mode, (SCEN = 1), the SCLK is always available when CLKEN = 1, regardless of the UE bit value..
Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it when exit from low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: USART not able to wake up the MCU from Stop mode
1: Enabled: USART able to wake up the MCU from Stop mode
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to '1'. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the USART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..
Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. ..
Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI master/slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..
Allowed values:
0: Disabled: FIFO mode is disabled
1: Enabled: FIFO mode is enabled
Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when TXFE = 1 in the USART_ISR register
Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when RXFF = 1 in the USART_ISR register
Control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
2/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADD
rw |
RTOEN
rw |
ABRMOD
rw |
ABREN
rw |
MSBFIRST
rw |
DATAINV
rw |
TXINV
rw |
RXINV
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SWAP
rw |
LINEN
rw |
STOP
rw |
CLKEN
rw |
CPOL
rw |
CPHA
rw |
LBCL
rw |
LBDIE
rw |
LBDL
rw |
ADDM7
rw |
DIS_NSS
rw |
SLVEN
rw |
Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Slave mode disabled
1: Enabled: Slave mode enabled
Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: SPI slave selection depends on NSS input pin
1: Enabled: SPI slave is always selected and NSS input pin is ignored
Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..
Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the SCLK pin in synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: Clock phase This bit is used to select the phase of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see and ) This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Clock enable This bit enables the user to enable the SCLK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to . In Smartcard mode, in order to provide correctly the SCLK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 UE = 1.
Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 24-31: Address of the USART node ADD[7:4]: These bits give the address of the USART node or a character code to be recognized. They are used to wake up the MCU with 7-bit address mark detection in multiprocessor communication during Mute mode or low-power mode. The MSB of the character sent by the transmitter should be equal to 1. They can also be used for character detection during normal reception, Mute mode inactive (for example, end of block detection in ModBus protocol). In this case, the whole received character (8-bit) is compared to the ADD[7:0] value and CMF flag is set on match. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0). ADD[3:0]: These bits give the address of the USART node or a character code to be recognized. They are used for wakeup with address mark detection, in multiprocessor communication during Mute mode or low-power mode. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0)..
Control register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
7/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFTCFG
rw |
RXFTIE
rw |
RXFTCFG
rw |
TCBGTIE
rw |
TXFTIE
rw |
WUFIE
rw |
WUS
rw |
SCARCNT
rw |
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15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DEP
rw |
DEM
rw |
DDRE
rw |
OVRDIS
rw |
ONEBIT
rw |
CTSIE
rw |
CTSE
rw |
RTSE
rw |
DMAT
rw |
DMAR
rw |
SCEN
rw |
NACK
rw |
HDSEL
rw |
IRLP
rw |
IREN
rw |
EIE
rw |
Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1 or UDR = 1 in the USART_ISR register)..
Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..
Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: DMA enable receiver This bit is set/reset by software.
Bit 7: DMA enable transmitter This bit is set/reset by software.
Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..
Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data is written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.
Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..
Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. ..
Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Address: WUF active on address match
2: Start: WuF active on Start bit detection
3: RXNE: WUF active on RXNE
Bit 22: Wakeup from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated whenever WUF=1 in the ISR register
Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Transmit FIFO reaches the threshold programmed in TXFTCFG
Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated whenever TCBGT=1 in the USART_ISR register
Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: RXFIFO reaches 1/8 of its depth
1: Depth_1_4: RXFIFO reaches 1/4 of its depth
2: Depth_1_2: RXFIFO reaches 1/2 of its depth
3: Depth_3_4: RXFIFO reaches 3/4 of its depth
4: Depth_7_8: RXFIFO reaches 7/8 of its depth
5: Full: RXFIFO becomes full
Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Receive FIFO reaches the threshold programmed in RXFTCFG
Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: TXFIFO reaches 1/8 of its depth
1: Depth_1_4: TXFIFO reaches 1/4 of its depth
2: Depth_1_2: TXFIFO reaches 1/2 of its depth
3: Depth_3_4: TXFIFO reaches 3/4 of its depth
4: Depth_7_8: TXFIFO reaches 7/8 of its depth
5: Empty: TXFIFO becomes empty
Baud rate register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BRR
rw |
Guard time and prescaler register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-7: Prescaler value In IrDA low-power and normal IrDA mode: PSC[7:0] = IrDA Normal and Low-Power baud rate PSC[7:0] is used to program the prescaler for dividing the USART source clock to achieve the low-power frequency: the source clock is divided by the value given in the register (8 significant bits): In Smartcard mode: PSC[4:0]=Prescaler value PSC[4:0] is used to program the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... 00100000: Divides the source clock by 32 (IrDA mode) ... 11111111: Divides the source clock by 255 (IrDA mode) This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. This bitfield is reserved and forced by hardware to '0' when the Smartcard and IrDA modes are not supported. Refer to ..
Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Receiver timeout register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Request register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
0/5 fields covered.
Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF flag in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software should wait for the TXE flag assertion before setting the SBKRQ bit..
Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..
Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..
Bit 4: Transmit data flush request When FIFO mode is disabled, writing '1' to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..
Interrupt & status register
Offset: 0x1c, size: 32, reset: 0x008000C0, access: read-only
28/28 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFT
r |
RXFT
r |
TCBGT
r |
RXFF
r |
TXFE
r |
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ABRF
r |
ABRE
r |
UDR
r |
EOBF
r |
RTOF
r |
CTS
r |
CTSIF
r |
LBDF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NECF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Tolerance of the USART receiver to clock deviation on page861). This error is associated with the character in the USART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the USART_CR1 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..
Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. It is set by hardware when the transmission of a frame containing data is complete and when TXFE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is is cleared by software, by writing 1 to the TCCF in the USART_ICR register or by a write to the USART_TDR register. Note: If TE bit is reset and no transmission is on going, the TC bit is immediately set..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). This bit is used during single buffer transmission..
Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to ..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..
Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if the EOBIE=1 in the USART_CR2 register. It is cleared by software, writing 1 to the EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to ..
Bit 13: SPI slave underrun error flag In slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to ..
Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_CR3 register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 23: TXFIFO empty This bit is set by hardware when TXFIFO is empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..
Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFOsize+1 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..
Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is '1'. Refer to on page835..
Allowed values:
0: NotCompleted: Transmission not completed
1: Completed: Transmission has completed
Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to '101', RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..
Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..
Interrupt flag clear register
Offset: 0x20, size: 32, reset: 0x00000000, access: write-only
4/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WUCF
w |
CMCF
w |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
UDRCF
w |
EOBCF
w |
RTOCF
w |
CTSCF
w |
LBDCF
w |
TCBGTCF
w |
TCCF
w |
TXFECF
w |
IDLECF
w |
ORECF
w |
NECF
w |
FECF
w |
PECF
w |
Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..
Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..
Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..
Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..
Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..
Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TXFE flag in the ISR register
Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..
Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TCBGT flag in the ISR register
Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to page835..
Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to.
Allowed values:
1: Clear: Clear the UDR flag in the ISR register
Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..
Bit 20: Wakeup from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
1: Clear: Clears the WUF flag in the ISR register
Receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RDR
r |
Transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDR
rw |
Prescaler register
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESCALER
rw |
Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is 1011 i.e. input clock divided by 256..
Allowed values:
0: Div1: Input clock divided by 1
1: Div2: Input clock divided by 2
2: Div4: Input clock divided by 4
3: Div6: Input clock divided by 6
4: Div8: Input clock divided by 8
5: Div10: Input clock divided by 10
6: Div12: Input clock divided by 12
7: Div16: Input clock divided by 16
8: Div32: Input clock divided by 32
9: Div64: Input clock divided by 64
10: Div128: Input clock divided by 128
11: Div256: Input clock divided by 256
0x40004800: Universal synchronous asynchronous receiver transmitter
47/124 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | CR3 | ||||||||||||||||||||||||||||||||
0xc | BRR | ||||||||||||||||||||||||||||||||
0x10 | GTPR | ||||||||||||||||||||||||||||||||
0x14 | RTOR | ||||||||||||||||||||||||||||||||
0x18 | RQR | ||||||||||||||||||||||||||||||||
0x1c | ISR | ||||||||||||||||||||||||||||||||
0x20 | ICR | ||||||||||||||||||||||||||||||||
0x24 | RDR | ||||||||||||||||||||||||||||||||
0x28 | TDR | ||||||||||||||||||||||||||||||||
0x2c | PRESC |
Control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
4/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXFFIE
rw |
TXFEIE
rw |
FIFOEN
rw |
M1
rw |
EOBIE
rw |
RTOIE
rw |
DEAT
rw |
DEDT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OVER8
rw |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXEIE
rw |
TCIE
rw |
RXNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. In Smartcard mode, (SCEN = 1), the SCLK is always available when CLKEN = 1, regardless of the UE bit value..
Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it when exit from low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: USART not able to wake up the MCU from Stop mode
1: Enabled: USART able to wake up the MCU from Stop mode
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to '1'. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the USART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..
Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. ..
Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI master/slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..
Allowed values:
0: Disabled: FIFO mode is disabled
1: Enabled: FIFO mode is enabled
Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when TXFE = 1 in the USART_ISR register
Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when RXFF = 1 in the USART_ISR register
Control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
2/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADD
rw |
RTOEN
rw |
ABRMOD
rw |
ABREN
rw |
MSBFIRST
rw |
DATAINV
rw |
TXINV
rw |
RXINV
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SWAP
rw |
LINEN
rw |
STOP
rw |
CLKEN
rw |
CPOL
rw |
CPHA
rw |
LBCL
rw |
LBDIE
rw |
LBDL
rw |
ADDM7
rw |
DIS_NSS
rw |
SLVEN
rw |
Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Slave mode disabled
1: Enabled: Slave mode enabled
Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: SPI slave selection depends on NSS input pin
1: Enabled: SPI slave is always selected and NSS input pin is ignored
Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..
Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the SCLK pin in synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: Clock phase This bit is used to select the phase of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see and ) This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Clock enable This bit enables the user to enable the SCLK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to . In Smartcard mode, in order to provide correctly the SCLK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 UE = 1.
Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 24-31: Address of the USART node ADD[7:4]: These bits give the address of the USART node or a character code to be recognized. They are used to wake up the MCU with 7-bit address mark detection in multiprocessor communication during Mute mode or low-power mode. The MSB of the character sent by the transmitter should be equal to 1. They can also be used for character detection during normal reception, Mute mode inactive (for example, end of block detection in ModBus protocol). In this case, the whole received character (8-bit) is compared to the ADD[7:0] value and CMF flag is set on match. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0). ADD[3:0]: These bits give the address of the USART node or a character code to be recognized. They are used for wakeup with address mark detection, in multiprocessor communication during Mute mode or low-power mode. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0)..
Control register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
7/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFTCFG
rw |
RXFTIE
rw |
RXFTCFG
rw |
TCBGTIE
rw |
TXFTIE
rw |
WUFIE
rw |
WUS
rw |
SCARCNT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DEP
rw |
DEM
rw |
DDRE
rw |
OVRDIS
rw |
ONEBIT
rw |
CTSIE
rw |
CTSE
rw |
RTSE
rw |
DMAT
rw |
DMAR
rw |
SCEN
rw |
NACK
rw |
HDSEL
rw |
IRLP
rw |
IREN
rw |
EIE
rw |
Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1 or UDR = 1 in the USART_ISR register)..
Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..
Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: DMA enable receiver This bit is set/reset by software.
Bit 7: DMA enable transmitter This bit is set/reset by software.
Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..
Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data is written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.
Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..
Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. ..
Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Address: WUF active on address match
2: Start: WuF active on Start bit detection
3: RXNE: WUF active on RXNE
Bit 22: Wakeup from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated whenever WUF=1 in the ISR register
Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Transmit FIFO reaches the threshold programmed in TXFTCFG
Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated whenever TCBGT=1 in the USART_ISR register
Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: RXFIFO reaches 1/8 of its depth
1: Depth_1_4: RXFIFO reaches 1/4 of its depth
2: Depth_1_2: RXFIFO reaches 1/2 of its depth
3: Depth_3_4: RXFIFO reaches 3/4 of its depth
4: Depth_7_8: RXFIFO reaches 7/8 of its depth
5: Full: RXFIFO becomes full
Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Receive FIFO reaches the threshold programmed in RXFTCFG
Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: TXFIFO reaches 1/8 of its depth
1: Depth_1_4: TXFIFO reaches 1/4 of its depth
2: Depth_1_2: TXFIFO reaches 1/2 of its depth
3: Depth_3_4: TXFIFO reaches 3/4 of its depth
4: Depth_7_8: TXFIFO reaches 7/8 of its depth
5: Empty: TXFIFO becomes empty
Baud rate register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BRR
rw |
Guard time and prescaler register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-7: Prescaler value In IrDA low-power and normal IrDA mode: PSC[7:0] = IrDA Normal and Low-Power baud rate PSC[7:0] is used to program the prescaler for dividing the USART source clock to achieve the low-power frequency: the source clock is divided by the value given in the register (8 significant bits): In Smartcard mode: PSC[4:0]=Prescaler value PSC[4:0] is used to program the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... 00100000: Divides the source clock by 32 (IrDA mode) ... 11111111: Divides the source clock by 255 (IrDA mode) This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. This bitfield is reserved and forced by hardware to '0' when the Smartcard and IrDA modes are not supported. Refer to ..
Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Receiver timeout register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Request register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
0/5 fields covered.
Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF flag in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software should wait for the TXE flag assertion before setting the SBKRQ bit..
Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..
Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..
Bit 4: Transmit data flush request When FIFO mode is disabled, writing '1' to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..
Interrupt & status register
Offset: 0x1c, size: 32, reset: 0x008000C0, access: read-only
28/28 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFT
r |
RXFT
r |
TCBGT
r |
RXFF
r |
TXFE
r |
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ABRF
r |
ABRE
r |
UDR
r |
EOBF
r |
RTOF
r |
CTS
r |
CTSIF
r |
LBDF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NECF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Tolerance of the USART receiver to clock deviation on page861). This error is associated with the character in the USART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the USART_CR1 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..
Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. It is set by hardware when the transmission of a frame containing data is complete and when TXFE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is is cleared by software, by writing 1 to the TCCF in the USART_ICR register or by a write to the USART_TDR register. Note: If TE bit is reset and no transmission is on going, the TC bit is immediately set..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). This bit is used during single buffer transmission..
Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to ..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..
Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if the EOBIE=1 in the USART_CR2 register. It is cleared by software, writing 1 to the EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to ..
Bit 13: SPI slave underrun error flag In slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to ..
Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_CR3 register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 23: TXFIFO empty This bit is set by hardware when TXFIFO is empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..
Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFOsize+1 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..
Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is '1'. Refer to on page835..
Allowed values:
0: NotCompleted: Transmission not completed
1: Completed: Transmission has completed
Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to '101', RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..
Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..
Interrupt flag clear register
Offset: 0x20, size: 32, reset: 0x00000000, access: write-only
4/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WUCF
w |
CMCF
w |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
UDRCF
w |
EOBCF
w |
RTOCF
w |
CTSCF
w |
LBDCF
w |
TCBGTCF
w |
TCCF
w |
TXFECF
w |
IDLECF
w |
ORECF
w |
NECF
w |
FECF
w |
PECF
w |
Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..
Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..
Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..
Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..
Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..
Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TXFE flag in the ISR register
Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..
Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TCBGT flag in the ISR register
Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to page835..
Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to.
Allowed values:
1: Clear: Clear the UDR flag in the ISR register
Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..
Bit 20: Wakeup from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
1: Clear: Clears the WUF flag in the ISR register
Receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RDR
r |
Transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDR
rw |
Prescaler register
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESCALER
rw |
Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is 1011 i.e. input clock divided by 256..
Allowed values:
0: Div1: Input clock divided by 1
1: Div2: Input clock divided by 2
2: Div4: Input clock divided by 4
3: Div6: Input clock divided by 6
4: Div8: Input clock divided by 8
5: Div10: Input clock divided by 10
6: Div12: Input clock divided by 12
7: Div16: Input clock divided by 16
8: Div32: Input clock divided by 32
9: Div64: Input clock divided by 64
10: Div128: Input clock divided by 128
11: Div256: Input clock divided by 256
0x40004c00: Universal synchronous asynchronous receiver transmitter
47/124 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | CR3 | ||||||||||||||||||||||||||||||||
0xc | BRR | ||||||||||||||||||||||||||||||||
0x10 | GTPR | ||||||||||||||||||||||||||||||||
0x14 | RTOR | ||||||||||||||||||||||||||||||||
0x18 | RQR | ||||||||||||||||||||||||||||||||
0x1c | ISR | ||||||||||||||||||||||||||||||||
0x20 | ICR | ||||||||||||||||||||||||||||||||
0x24 | RDR | ||||||||||||||||||||||||||||||||
0x28 | TDR | ||||||||||||||||||||||||||||||||
0x2c | PRESC |
Control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
4/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXFFIE
rw |
TXFEIE
rw |
FIFOEN
rw |
M1
rw |
EOBIE
rw |
RTOIE
rw |
DEAT
rw |
DEDT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OVER8
rw |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXEIE
rw |
TCIE
rw |
RXNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. In Smartcard mode, (SCEN = 1), the SCLK is always available when CLKEN = 1, regardless of the UE bit value..
Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it when exit from low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: USART not able to wake up the MCU from Stop mode
1: Enabled: USART able to wake up the MCU from Stop mode
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to '1'. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the USART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..
Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. ..
Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI master/slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..
Allowed values:
0: Disabled: FIFO mode is disabled
1: Enabled: FIFO mode is enabled
Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when TXFE = 1 in the USART_ISR register
Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when RXFF = 1 in the USART_ISR register
Control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
2/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADD
rw |
RTOEN
rw |
ABRMOD
rw |
ABREN
rw |
MSBFIRST
rw |
DATAINV
rw |
TXINV
rw |
RXINV
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SWAP
rw |
LINEN
rw |
STOP
rw |
CLKEN
rw |
CPOL
rw |
CPHA
rw |
LBCL
rw |
LBDIE
rw |
LBDL
rw |
ADDM7
rw |
DIS_NSS
rw |
SLVEN
rw |
Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Slave mode disabled
1: Enabled: Slave mode enabled
Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: SPI slave selection depends on NSS input pin
1: Enabled: SPI slave is always selected and NSS input pin is ignored
Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..
Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the SCLK pin in synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: Clock phase This bit is used to select the phase of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see and ) This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Clock enable This bit enables the user to enable the SCLK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to . In Smartcard mode, in order to provide correctly the SCLK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 UE = 1.
Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 24-31: Address of the USART node ADD[7:4]: These bits give the address of the USART node or a character code to be recognized. They are used to wake up the MCU with 7-bit address mark detection in multiprocessor communication during Mute mode or low-power mode. The MSB of the character sent by the transmitter should be equal to 1. They can also be used for character detection during normal reception, Mute mode inactive (for example, end of block detection in ModBus protocol). In this case, the whole received character (8-bit) is compared to the ADD[7:0] value and CMF flag is set on match. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0). ADD[3:0]: These bits give the address of the USART node or a character code to be recognized. They are used for wakeup with address mark detection, in multiprocessor communication during Mute mode or low-power mode. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0)..
Control register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
7/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFTCFG
rw |
RXFTIE
rw |
RXFTCFG
rw |
TCBGTIE
rw |
TXFTIE
rw |
WUFIE
rw |
WUS
rw |
SCARCNT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DEP
rw |
DEM
rw |
DDRE
rw |
OVRDIS
rw |
ONEBIT
rw |
CTSIE
rw |
CTSE
rw |
RTSE
rw |
DMAT
rw |
DMAR
rw |
SCEN
rw |
NACK
rw |
HDSEL
rw |
IRLP
rw |
IREN
rw |
EIE
rw |
Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1 or UDR = 1 in the USART_ISR register)..
Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..
Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: DMA enable receiver This bit is set/reset by software.
Bit 7: DMA enable transmitter This bit is set/reset by software.
Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..
Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data is written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.
Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..
Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. ..
Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Address: WUF active on address match
2: Start: WuF active on Start bit detection
3: RXNE: WUF active on RXNE
Bit 22: Wakeup from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated whenever WUF=1 in the ISR register
Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Transmit FIFO reaches the threshold programmed in TXFTCFG
Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated whenever TCBGT=1 in the USART_ISR register
Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: RXFIFO reaches 1/8 of its depth
1: Depth_1_4: RXFIFO reaches 1/4 of its depth
2: Depth_1_2: RXFIFO reaches 1/2 of its depth
3: Depth_3_4: RXFIFO reaches 3/4 of its depth
4: Depth_7_8: RXFIFO reaches 7/8 of its depth
5: Full: RXFIFO becomes full
Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Receive FIFO reaches the threshold programmed in RXFTCFG
Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: TXFIFO reaches 1/8 of its depth
1: Depth_1_4: TXFIFO reaches 1/4 of its depth
2: Depth_1_2: TXFIFO reaches 1/2 of its depth
3: Depth_3_4: TXFIFO reaches 3/4 of its depth
4: Depth_7_8: TXFIFO reaches 7/8 of its depth
5: Empty: TXFIFO becomes empty
Baud rate register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BRR
rw |
Guard time and prescaler register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-7: Prescaler value In IrDA low-power and normal IrDA mode: PSC[7:0] = IrDA Normal and Low-Power baud rate PSC[7:0] is used to program the prescaler for dividing the USART source clock to achieve the low-power frequency: the source clock is divided by the value given in the register (8 significant bits): In Smartcard mode: PSC[4:0]=Prescaler value PSC[4:0] is used to program the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... 00100000: Divides the source clock by 32 (IrDA mode) ... 11111111: Divides the source clock by 255 (IrDA mode) This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. This bitfield is reserved and forced by hardware to '0' when the Smartcard and IrDA modes are not supported. Refer to ..
Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Receiver timeout register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Request register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
0/5 fields covered.
Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF flag in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software should wait for the TXE flag assertion before setting the SBKRQ bit..
Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..
Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..
Bit 4: Transmit data flush request When FIFO mode is disabled, writing '1' to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..
Interrupt & status register
Offset: 0x1c, size: 32, reset: 0x008000C0, access: read-only
28/28 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFT
r |
RXFT
r |
TCBGT
r |
RXFF
r |
TXFE
r |
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ABRF
r |
ABRE
r |
UDR
r |
EOBF
r |
RTOF
r |
CTS
r |
CTSIF
r |
LBDF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NECF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Tolerance of the USART receiver to clock deviation on page861). This error is associated with the character in the USART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the USART_CR1 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..
Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. It is set by hardware when the transmission of a frame containing data is complete and when TXFE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is is cleared by software, by writing 1 to the TCCF in the USART_ICR register or by a write to the USART_TDR register. Note: If TE bit is reset and no transmission is on going, the TC bit is immediately set..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). This bit is used during single buffer transmission..
Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to ..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..
Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if the EOBIE=1 in the USART_CR2 register. It is cleared by software, writing 1 to the EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to ..
Bit 13: SPI slave underrun error flag In slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to ..
Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_CR3 register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 23: TXFIFO empty This bit is set by hardware when TXFIFO is empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..
Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFOsize+1 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..
Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is '1'. Refer to on page835..
Allowed values:
0: NotCompleted: Transmission not completed
1: Completed: Transmission has completed
Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to '101', RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..
Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..
Interrupt flag clear register
Offset: 0x20, size: 32, reset: 0x00000000, access: write-only
4/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WUCF
w |
CMCF
w |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
UDRCF
w |
EOBCF
w |
RTOCF
w |
CTSCF
w |
LBDCF
w |
TCBGTCF
w |
TCCF
w |
TXFECF
w |
IDLECF
w |
ORECF
w |
NECF
w |
FECF
w |
PECF
w |
Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..
Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..
Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..
Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..
Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..
Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TXFE flag in the ISR register
Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..
Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TCBGT flag in the ISR register
Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to page835..
Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to.
Allowed values:
1: Clear: Clear the UDR flag in the ISR register
Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..
Bit 20: Wakeup from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
1: Clear: Clears the WUF flag in the ISR register
Receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RDR
r |
Transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDR
rw |
Prescaler register
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESCALER
rw |
Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is 1011 i.e. input clock divided by 256..
Allowed values:
0: Div1: Input clock divided by 1
1: Div2: Input clock divided by 2
2: Div4: Input clock divided by 4
3: Div6: Input clock divided by 6
4: Div8: Input clock divided by 8
5: Div10: Input clock divided by 10
6: Div12: Input clock divided by 12
7: Div16: Input clock divided by 16
8: Div32: Input clock divided by 32
9: Div64: Input clock divided by 64
10: Div128: Input clock divided by 128
11: Div256: Input clock divided by 256
0x40005000: Universal synchronous asynchronous receiver transmitter
47/124 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | CR3 | ||||||||||||||||||||||||||||||||
0xc | BRR | ||||||||||||||||||||||||||||||||
0x10 | GTPR | ||||||||||||||||||||||||||||||||
0x14 | RTOR | ||||||||||||||||||||||||||||||||
0x18 | RQR | ||||||||||||||||||||||||||||||||
0x1c | ISR | ||||||||||||||||||||||||||||||||
0x20 | ICR | ||||||||||||||||||||||||||||||||
0x24 | RDR | ||||||||||||||||||||||||||||||||
0x28 | TDR | ||||||||||||||||||||||||||||||||
0x2c | PRESC |
Control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
4/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXFFIE
rw |
TXFEIE
rw |
FIFOEN
rw |
M1
rw |
EOBIE
rw |
RTOIE
rw |
DEAT
rw |
DEDT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OVER8
rw |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXEIE
rw |
TCIE
rw |
RXNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. In Smartcard mode, (SCEN = 1), the SCLK is always available when CLKEN = 1, regardless of the UE bit value..
Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it when exit from low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: USART not able to wake up the MCU from Stop mode
1: Enabled: USART able to wake up the MCU from Stop mode
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to '1'. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the USART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..
Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. ..
Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI master/slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..
Allowed values:
0: Disabled: FIFO mode is disabled
1: Enabled: FIFO mode is enabled
Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when TXFE = 1 in the USART_ISR register
Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when RXFF = 1 in the USART_ISR register
Control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
2/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADD
rw |
RTOEN
rw |
ABRMOD
rw |
ABREN
rw |
MSBFIRST
rw |
DATAINV
rw |
TXINV
rw |
RXINV
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SWAP
rw |
LINEN
rw |
STOP
rw |
CLKEN
rw |
CPOL
rw |
CPHA
rw |
LBCL
rw |
LBDIE
rw |
LBDL
rw |
ADDM7
rw |
DIS_NSS
rw |
SLVEN
rw |
Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Slave mode disabled
1: Enabled: Slave mode enabled
Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: SPI slave selection depends on NSS input pin
1: Enabled: SPI slave is always selected and NSS input pin is ignored
Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..
Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the SCLK pin in synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: Clock phase This bit is used to select the phase of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see and ) This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Clock enable This bit enables the user to enable the SCLK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to . In Smartcard mode, in order to provide correctly the SCLK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 UE = 1.
Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 24-31: Address of the USART node ADD[7:4]: These bits give the address of the USART node or a character code to be recognized. They are used to wake up the MCU with 7-bit address mark detection in multiprocessor communication during Mute mode or low-power mode. The MSB of the character sent by the transmitter should be equal to 1. They can also be used for character detection during normal reception, Mute mode inactive (for example, end of block detection in ModBus protocol). In this case, the whole received character (8-bit) is compared to the ADD[7:0] value and CMF flag is set on match. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0). ADD[3:0]: These bits give the address of the USART node or a character code to be recognized. They are used for wakeup with address mark detection, in multiprocessor communication during Mute mode or low-power mode. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0)..
Control register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
7/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFTCFG
rw |
RXFTIE
rw |
RXFTCFG
rw |
TCBGTIE
rw |
TXFTIE
rw |
WUFIE
rw |
WUS
rw |
SCARCNT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DEP
rw |
DEM
rw |
DDRE
rw |
OVRDIS
rw |
ONEBIT
rw |
CTSIE
rw |
CTSE
rw |
RTSE
rw |
DMAT
rw |
DMAR
rw |
SCEN
rw |
NACK
rw |
HDSEL
rw |
IRLP
rw |
IREN
rw |
EIE
rw |
Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1 or UDR = 1 in the USART_ISR register)..
Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..
Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: DMA enable receiver This bit is set/reset by software.
Bit 7: DMA enable transmitter This bit is set/reset by software.
Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..
Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data is written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.
Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..
Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. ..
Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Address: WUF active on address match
2: Start: WuF active on Start bit detection
3: RXNE: WUF active on RXNE
Bit 22: Wakeup from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated whenever WUF=1 in the ISR register
Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Transmit FIFO reaches the threshold programmed in TXFTCFG
Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated whenever TCBGT=1 in the USART_ISR register
Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: RXFIFO reaches 1/8 of its depth
1: Depth_1_4: RXFIFO reaches 1/4 of its depth
2: Depth_1_2: RXFIFO reaches 1/2 of its depth
3: Depth_3_4: RXFIFO reaches 3/4 of its depth
4: Depth_7_8: RXFIFO reaches 7/8 of its depth
5: Full: RXFIFO becomes full
Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Receive FIFO reaches the threshold programmed in RXFTCFG
Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: TXFIFO reaches 1/8 of its depth
1: Depth_1_4: TXFIFO reaches 1/4 of its depth
2: Depth_1_2: TXFIFO reaches 1/2 of its depth
3: Depth_3_4: TXFIFO reaches 3/4 of its depth
4: Depth_7_8: TXFIFO reaches 7/8 of its depth
5: Empty: TXFIFO becomes empty
Baud rate register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BRR
rw |
Guard time and prescaler register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-7: Prescaler value In IrDA low-power and normal IrDA mode: PSC[7:0] = IrDA Normal and Low-Power baud rate PSC[7:0] is used to program the prescaler for dividing the USART source clock to achieve the low-power frequency: the source clock is divided by the value given in the register (8 significant bits): In Smartcard mode: PSC[4:0]=Prescaler value PSC[4:0] is used to program the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... 00100000: Divides the source clock by 32 (IrDA mode) ... 11111111: Divides the source clock by 255 (IrDA mode) This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. This bitfield is reserved and forced by hardware to '0' when the Smartcard and IrDA modes are not supported. Refer to ..
Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Receiver timeout register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Request register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
0/5 fields covered.
Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF flag in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software should wait for the TXE flag assertion before setting the SBKRQ bit..
Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..
Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..
Bit 4: Transmit data flush request When FIFO mode is disabled, writing '1' to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..
Interrupt & status register
Offset: 0x1c, size: 32, reset: 0x008000C0, access: read-only
28/28 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFT
r |
RXFT
r |
TCBGT
r |
RXFF
r |
TXFE
r |
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ABRF
r |
ABRE
r |
UDR
r |
EOBF
r |
RTOF
r |
CTS
r |
CTSIF
r |
LBDF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NECF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Tolerance of the USART receiver to clock deviation on page861). This error is associated with the character in the USART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the USART_CR1 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..
Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. It is set by hardware when the transmission of a frame containing data is complete and when TXFE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is is cleared by software, by writing 1 to the TCCF in the USART_ICR register or by a write to the USART_TDR register. Note: If TE bit is reset and no transmission is on going, the TC bit is immediately set..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). This bit is used during single buffer transmission..
Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to ..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..
Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if the EOBIE=1 in the USART_CR2 register. It is cleared by software, writing 1 to the EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to ..
Bit 13: SPI slave underrun error flag In slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to ..
Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_CR3 register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 23: TXFIFO empty This bit is set by hardware when TXFIFO is empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..
Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFOsize+1 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..
Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is '1'. Refer to on page835..
Allowed values:
0: NotCompleted: Transmission not completed
1: Completed: Transmission has completed
Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to '101', RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..
Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..
Interrupt flag clear register
Offset: 0x20, size: 32, reset: 0x00000000, access: write-only
4/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WUCF
w |
CMCF
w |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
UDRCF
w |
EOBCF
w |
RTOCF
w |
CTSCF
w |
LBDCF
w |
TCBGTCF
w |
TCCF
w |
TXFECF
w |
IDLECF
w |
ORECF
w |
NECF
w |
FECF
w |
PECF
w |
Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..
Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..
Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..
Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..
Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..
Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TXFE flag in the ISR register
Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..
Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TCBGT flag in the ISR register
Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to page835..
Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to.
Allowed values:
1: Clear: Clear the UDR flag in the ISR register
Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..
Bit 20: Wakeup from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
1: Clear: Clears the WUF flag in the ISR register
Receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RDR
r |
Transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDR
rw |
Prescaler register
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESCALER
rw |
Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is 1011 i.e. input clock divided by 256..
Allowed values:
0: Div1: Input clock divided by 1
1: Div2: Input clock divided by 2
2: Div4: Input clock divided by 4
3: Div6: Input clock divided by 6
4: Div8: Input clock divided by 8
5: Div10: Input clock divided by 10
6: Div12: Input clock divided by 12
7: Div16: Input clock divided by 16
8: Div32: Input clock divided by 32
9: Div64: Input clock divided by 64
10: Div128: Input clock divided by 128
11: Div256: Input clock divided by 256
0x40013c00: Universal synchronous asynchronous receiver transmitter
47/124 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CR1 | ||||||||||||||||||||||||||||||||
0x4 | CR2 | ||||||||||||||||||||||||||||||||
0x8 | CR3 | ||||||||||||||||||||||||||||||||
0xc | BRR | ||||||||||||||||||||||||||||||||
0x10 | GTPR | ||||||||||||||||||||||||||||||||
0x14 | RTOR | ||||||||||||||||||||||||||||||||
0x18 | RQR | ||||||||||||||||||||||||||||||||
0x1c | ISR | ||||||||||||||||||||||||||||||||
0x20 | ICR | ||||||||||||||||||||||||||||||||
0x24 | RDR | ||||||||||||||||||||||||||||||||
0x28 | TDR | ||||||||||||||||||||||||||||||||
0x2c | PRESC |
Control register 1
Offset: 0x0, size: 32, reset: 0x00000000, access: read-write
4/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RXFFIE
rw |
TXFEIE
rw |
FIFOEN
rw |
M1
rw |
EOBIE
rw |
RTOIE
rw |
DEAT
rw |
DEDT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OVER8
rw |
CMIE
rw |
MME
rw |
M0
rw |
WAKE
rw |
PCE
rw |
PS
rw |
PEIE
rw |
TXEIE
rw |
TCIE
rw |
RXNEIE
rw |
IDLEIE
rw |
TE
rw |
RE
rw |
UESM
rw |
UE
rw |
Bit 0: USART enable When this bit is cleared, the USART prescalers and outputs are stopped immediately, and all current operations are discarded. The USART configuration is kept, but all the USART_ISR status flags are reset. This bit is set and cleared by software. Note: To enter low-power mode without generating errors on the line, the TE bit must be previously reset and the software must wait for the TC bit in the USART_ISR to be set before resetting the UE bit. The DMA requests are also reset when UE = 0 so the DMA channel must be disabled before resetting the UE bit. In Smartcard mode, (SCEN = 1), the SCLK is always available when CLKEN = 1, regardless of the UE bit value..
Bit 1: USART enable in low-power mode When this bit is cleared, the USART cannot wake up the MCU from low-power mode. When this bit is set, the USART can wake up the MCU from low-power mode. This bit is set and cleared by software. Note: It is recommended to set the UESM bit just before entering low-power mode and clear it when exit from low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: USART not able to wake up the MCU from Stop mode
1: Enabled: USART able to wake up the MCU from Stop mode
Bit 2: Receiver enable This bit enables the receiver. It is set and cleared by software..
Bit 3: Transmitter enable This bit enables the transmitter. It is set and cleared by software. Note: During transmission, a low pulse on the TE bit ('0' followed by '1') sends a preamble (idle line) after the current word, except in Smartcard mode. In order to generate an idle character, the TE must not be immediately written to '1'. To ensure the required duration, the software can poll the TEACK bit in the USART_ISR register. In Smartcard mode, when TE is set, there is a 1 bit-time delay before the transmission starts..
Bit 4: IDLE interrupt enable This bit is set and cleared by software..
Bit 5: RXFIFO not empty interrupt enable This bit is set and cleared by software..
Bit 6: Transmission complete interrupt enable This bit is set and cleared by software..
Bit 7: TXFIFO not full interrupt enable This bit is set and cleared by software..
Bit 8: PE interrupt enable This bit is set and cleared by software..
Bit 9: Parity selection This bit selects the odd or even parity when the parity generation/detection is enabled (PCE bit set). It is set and cleared by software. The parity is selected after the current byte. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 10: Parity control enable This bit selects the hardware parity control (generation and detection). When the parity control is enabled, the computed parity is inserted at the MSB position (9th bit if M=1; 8th bit if M=0) and the parity is checked on the received data. This bit is set and cleared by software. Once it is set, PCE is active after the current byte (in reception and in transmission). This bitfield can only be written when the USART is disabled (UE=0)..
Bit 11: Receiver wakeup method This bit determines the USART wakeup method from Mute mode. It is set or cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 12: Word length This bit is used in conjunction with bit 28 (M1) to determine the word length. It is set or cleared by software (refer to bit 28 (M1)description). This bit can only be written when the USART is disabled (UE=0)..
Bit 13: Mute mode enable This bit enables the USART Mute mode function. When set, the USART can switch between active and Mute mode, as defined by the WAKE bit. It is set and cleared by software..
Bit 14: Character match interrupt enable This bit is set and cleared by software..
Bit 15: Oversampling mode This bit can only be written when the USART is disabled (UE=0). Note: In LIN, IrDA and Smartcard modes, this bit must be kept cleared..
Bits 16-20: Driver Enable deassertion time This 5-bit value defines the time between the end of the last stop bit, in a transmitted message, and the de-activation of the DE (Driver Enable) signal. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). If the USART_TDR register is written during the DEDT time, the new data is transmitted only when the DEDT and DEAT times have both elapsed. This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-25: Driver Enable assertion time This 5-bit value defines the time between the activation of the DE (Driver Enable) signal and the beginning of the start bit. It is expressed in sample time units (1/8 or 1/16 bit time, depending on the oversampling rate). This bitfield can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 26: Receiver timeout interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. ..
Bit 27: End of Block interrupt enable This bit is set and cleared by software. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 28: Word length This bit must be used in conjunction with bit 12 (M0) to determine the word length. It is set or cleared by software. M[1:0] = '00': 1 start bit, 8 Data bits, n Stop bit M[1:0] = '01': 1 start bit, 9 Data bits, n Stop bit M[1:0] = '10': 1 start bit, 7 Data bits, n Stop bit This bit can only be written when the USART is disabled (UE=0). Note: In 7-bits data length mode, the Smartcard mode, LIN master mode and Auto baud rate (0x7F and 0x55 frames detection) are not supported..
Bit 29: FIFO mode enable This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0). Note: FIFO mode can be used on standard UART communication, in SPI master/slave mode and in Smartcard modes only. It must not be enabled in IrDA and LIN modes..
Allowed values:
0: Disabled: FIFO mode is disabled
1: Enabled: FIFO mode is enabled
Bit 30: TXFIFO empty interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when TXFE = 1 in the USART_ISR register
Bit 31: RXFIFO Full interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when RXFF = 1 in the USART_ISR register
Control register 2
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
2/20 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ADD
rw |
RTOEN
rw |
ABRMOD
rw |
ABREN
rw |
MSBFIRST
rw |
DATAINV
rw |
TXINV
rw |
RXINV
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
SWAP
rw |
LINEN
rw |
STOP
rw |
CLKEN
rw |
CPOL
rw |
CPHA
rw |
LBCL
rw |
LBDIE
rw |
LBDL
rw |
ADDM7
rw |
DIS_NSS
rw |
SLVEN
rw |
Bit 0: Synchronous Slave mode enable When the SLVEN bit is set, the synchronous slave mode is enabled. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Slave mode disabled
1: Enabled: Slave mode enabled
Bit 3: When the DIS_NSS bit is set, the NSS pin input is ignored. Note: When SPI slave mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: SPI slave selection depends on NSS input pin
1: Enabled: SPI slave is always selected and NSS input pin is ignored
Bit 4: 7-bit Address Detection/4-bit Address Detection This bit is for selection between 4-bit address detection or 7-bit address detection. This bit can only be written when the USART is disabled (UE=0) Note: In 7-bit and 9-bit data modes, the address detection is done on 6-bit and 8-bit address (ADD[5:0] and ADD[7:0]) respectively..
Bit 5: LIN break detection length This bit is for selection between 11 bit or 10 bit break detection. This bit can only be written when the USART is disabled (UE=0). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: LIN break detection interrupt enable Break interrupt mask (break detection using break delimiter). Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 8: Last bit clock pulse This bit is used to select whether the clock pulse associated with the last data bit transmitted (MSB) has to be output on the SCLK pin in synchronous mode. The last bit is the 7th or 8th or 9th data bit transmitted depending on the 7 or 8 or 9 bit format selected by the M bit in the USART_CR1 register. This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: Clock phase This bit is used to select the phase of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPOL bit to produce the desired clock/data relationship (see and ) This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: Clock polarity This bit enables the user to select the polarity of the clock output on the SCLK pin in synchronous mode. It works in conjunction with the CPHA bit to produce the desired clock/data relationship This bit can only be written when the USART is disabled (UE=0). Note: If synchronous mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Clock enable This bit enables the user to enable the SCLK pin. This bit can only be written when the USART is disabled (UE=0). Note: If neither synchronous mode nor Smartcard mode is supported, this bit is reserved and must be kept at reset value. Refer to . In Smartcard mode, in order to provide correctly the SCLK clock to the smartcard, the steps below must be respected: UE = 0 SCEN = 1 GTPR configuration CLKEN= 1 UE = 1.
Bits 12-13: stop bits These bits are used for programming the stop bits. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 14: LIN mode enable This bit is set and cleared by software. The LIN mode enables the capability to send LIN synchronous breaks (13 low bits) using the SBKRQ bit in the USART_CR1 register, and to detect LIN Sync breaks. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support LIN mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 15: Swap TX/RX pins This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 16: RX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the RX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 17: TX pin active level inversion This bit is set and cleared by software. This enables the use of an external inverter on the TX line. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 18: Binary data inversion This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 19: Most significant bit first This bit is set and cleared by software. This bitfield can only be written when the USART is disabled (UE=0)..
Bit 20: Auto baud rate enable This bit is set and cleared by software. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 21-22: Auto baud rate mode These bits are set and cleared by software. This bitfield can only be written when ABREN = 0 or the USART is disabled (UE=0). Note: If DATAINV=1 and/or MSBFIRST=1 the patterns must be the same on the line, for example 0xAA for MSBFIRST) If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 23: Receiver timeout enable This bit is set and cleared by software. When this feature is enabled, the RTOF flag in the USART_ISR register is set if the RX line is idle (no reception) for the duration programmed in the RTOR (receiver timeout register). Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to ..
Bits 24-31: Address of the USART node ADD[7:4]: These bits give the address of the USART node or a character code to be recognized. They are used to wake up the MCU with 7-bit address mark detection in multiprocessor communication during Mute mode or low-power mode. The MSB of the character sent by the transmitter should be equal to 1. They can also be used for character detection during normal reception, Mute mode inactive (for example, end of block detection in ModBus protocol). In this case, the whole received character (8-bit) is compared to the ADD[7:0] value and CMF flag is set on match. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0). ADD[3:0]: These bits give the address of the USART node or a character code to be recognized. They are used for wakeup with address mark detection, in multiprocessor communication during Mute mode or low-power mode. These bits can only be written when reception is disabled (RE = 0) or the USART is disabled (UE=0)..
Control register 3
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
7/24 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFTCFG
rw |
RXFTIE
rw |
RXFTCFG
rw |
TCBGTIE
rw |
TXFTIE
rw |
WUFIE
rw |
WUS
rw |
SCARCNT
rw |
||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
DEP
rw |
DEM
rw |
DDRE
rw |
OVRDIS
rw |
ONEBIT
rw |
CTSIE
rw |
CTSE
rw |
RTSE
rw |
DMAT
rw |
DMAR
rw |
SCEN
rw |
NACK
rw |
HDSEL
rw |
IRLP
rw |
IREN
rw |
EIE
rw |
Bit 0: Error interrupt enable Error Interrupt Enable Bit is required to enable interrupt generation in case of a framing error, overrun error noise flag or SPI slave underrun error (FE=1 or ORE=1 or NE=1 or UDR = 1 in the USART_ISR register)..
Bit 1: IrDA mode enable This bit is set and cleared by software. This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 2: IrDA low-power This bit is used for selecting between normal and low-power IrDA modes This bit can only be written when the USART is disabled (UE=0). Note: If IrDA mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 3: Half-duplex selection Selection of Single-wire Half-duplex mode This bit can only be written when the USART is disabled (UE=0)..
Bit 4: Smartcard NACK enable This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 5: Smartcard mode enable This bit is used for enabling Smartcard mode. This bitfield can only be written when the USART is disabled (UE=0). Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 6: DMA enable receiver This bit is set/reset by software.
Bit 7: DMA enable transmitter This bit is set/reset by software.
Bit 8: RTS enable This bit can only be written when the USART is disabled (UE=0). Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS enable This bit can only be written when the USART is disabled (UE=0) Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 10: CTS interrupt enable Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: One sample bit method enable This bit enables the user to select the sample method. When the one sample bit method is selected the noise detection flag (NE) is disabled. This bit can only be written when the USART is disabled (UE=0)..
Bit 12: Overrun Disable This bit is used to disable the receive overrun detection. the ORE flag is not set and the new received data overwrites the previous content of the USART_RDR register. When FIFO mode is enabled, the RXFIFO is bypassed and data is written directly in USART_RDR register. Even when FIFO management is enabled, the RXNE flag is to be used. This bit can only be written when the USART is disabled (UE=0). Note: This control bit enables checking the communication flow w/o reading the data.
Bit 13: DMA Disable on Reception Error This bit can only be written when the USART is disabled (UE=0). Note: The reception errors are: parity error, framing error or noise error..
Bit 14: Driver enable mode This bit enables the user to activate the external transceiver control, through the DE signal. This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. ..
Bit 15: Driver enable polarity selection This bit can only be written when the USART is disabled (UE=0). Note: If the Driver Enable feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 17-19: Smartcard auto-retry count This bitfield specifies the number of retries for transmission and reception in Smartcard mode. In transmission mode, it specifies the number of automatic retransmission retries, before generating a transmission error (FE bit set). In reception mode, it specifies the number or erroneous reception trials, before generating a reception error (RXNE/RXFNE and PE bits set). This bitfield must be programmed only when the USART is disabled (UE=0). When the USART is enabled (UE=1), this bitfield may only be written to 0x0, in order to stop retransmission. Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bits 20-21: Wakeup from low-power mode interrupt flag selection This bitfield specifies the event which activates the WUF (Wakeup from low-power mode flag). This bitfield can only be written when the USART is disabled (UE=0). If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Address: WUF active on address match
2: Start: WuF active on Start bit detection
3: RXNE: WUF active on RXNE
Bit 22: Wakeup from low-power mode interrupt enable This bit is set and cleared by software. Note: WUFIE must be set before entering in low-power mode. If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
0: Disabled: Interrupt is inhibited
1: Enabled: An USART interrupt is generated whenever WUF=1 in the ISR register
Bit 23: TXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Transmit FIFO reaches the threshold programmed in TXFTCFG
Bit 24: Transmission Complete before guard time, interrupt enable This bit is set and cleared by software. Note: If the USART does not support the Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated whenever TCBGT=1 in the USART_ISR register
Bits 25-27: Receive FIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: RXFIFO reaches 1/8 of its depth
1: Depth_1_4: RXFIFO reaches 1/4 of its depth
2: Depth_1_2: RXFIFO reaches 1/2 of its depth
3: Depth_3_4: RXFIFO reaches 3/4 of its depth
4: Depth_7_8: RXFIFO reaches 7/8 of its depth
5: Full: RXFIFO becomes full
Bit 28: RXFIFO threshold interrupt enable This bit is set and cleared by software..
Allowed values:
0: Disabled: Interrupt inhibited
1: Enabled: USART interrupt generated when Receive FIFO reaches the threshold programmed in RXFTCFG
Bits 29-31: TXFIFO threshold configuration Remaining combinations: Reserved.
Allowed values:
0: Depth_1_8: TXFIFO reaches 1/8 of its depth
1: Depth_1_4: TXFIFO reaches 1/4 of its depth
2: Depth_1_2: TXFIFO reaches 1/2 of its depth
3: Depth_3_4: TXFIFO reaches 3/4 of its depth
4: Depth_7_8: TXFIFO reaches 7/8 of its depth
5: Empty: TXFIFO becomes empty
Baud rate register
Offset: 0xc, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BRR
rw |
Guard time and prescaler register
Offset: 0x10, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Bits 0-7: Prescaler value In IrDA low-power and normal IrDA mode: PSC[7:0] = IrDA Normal and Low-Power baud rate PSC[7:0] is used to program the prescaler for dividing the USART source clock to achieve the low-power frequency: the source clock is divided by the value given in the register (8 significant bits): In Smartcard mode: PSC[4:0]=Prescaler value PSC[4:0] is used to program the prescaler for dividing the USART source clock to provide the Smartcard clock. The value given in the register (5 significant bits) is multiplied by 2 to give the division factor of the source clock frequency: ... 00100000: Divides the source clock by 32 (IrDA mode) ... 11111111: Divides the source clock by 255 (IrDA mode) This bitfield can only be written when the USART is disabled (UE=0). Note: Bits [7:5] must be kept cleared if Smartcard mode is used. This bitfield is reserved and forced by hardware to '0' when the Smartcard and IrDA modes are not supported. Refer to ..
Bits 8-15: Guard time value This bitfield is used to program the Guard time value in terms of number of baud clock periods. This is used in Smartcard mode. The Transmission Complete flag is set after this guard time value. This bitfield can only be written when the USART is disabled (UE=0). Note: If Smartcard mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Receiver timeout register
Offset: 0x14, size: 32, reset: 0x00000000, access: read-write
0/2 fields covered.
Request register
Offset: 0x18, size: 32, reset: 0x00000000, access: write-only
0/5 fields covered.
Bit 0: Auto baud rate request Writing 1 to this bit resets the ABRF flag in the USART_ISR and requests an automatic baud rate measurement on the next received data frame. Note: If the USART does not support the auto baud rate feature, this bit is reserved and must be kept at reset value. Refer to ..
Bit 1: Send break request Writing 1 to this bit sets the SBKF flag and request to send a BREAK on the line, as soon as the transmit machine is available. Note: When the application needs to send the break character following all previously inserted data, including the ones not yet transmitted, the software should wait for the TXE flag assertion before setting the SBKRQ bit..
Bit 2: Mute mode request Writing 1 to this bit puts the USART in Mute mode and resets the RWU flag..
Bit 3: Receive data flush request Writing 1 to this bit empties the entire receive FIFO i.e. clears the bit RXFNE. This enables to discard the received data without reading them, and avoid an overrun condition..
Bit 4: Transmit data flush request When FIFO mode is disabled, writing '1' to this bit sets the TXE flag. This enables to discard the transmit data. This bit must be used only in Smartcard mode, when data have not been sent due to errors (NACK) and the FE flag is active in the USART_ISR register. If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. When FIFO is enabled, TXFRQ bit is set to flush the whole FIFO. This sets the TXFE flag (Transmit FIFO empty, bit 23 in the USART_ISR register). Flushing the Transmit FIFO is supported in both UART and Smartcard modes. Note: In FIFO mode, the TXFNF flag is reset during the flush request until TxFIFO is empty in order to ensure that no data are written in the data register..
Interrupt & status register
Offset: 0x1c, size: 32, reset: 0x008000C0, access: read-only
28/28 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TXFT
r |
RXFT
r |
TCBGT
r |
RXFF
r |
TXFE
r |
REACK
r |
TEACK
r |
WUF
r |
RWU
r |
SBKF
r |
CMF
r |
BUSY
r |
||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
ABRF
r |
ABRE
r |
UDR
r |
EOBF
r |
RTOF
r |
CTS
r |
CTSIF
r |
LBDF
r |
TXFNF
r |
TC
r |
RXFNE
r |
IDLE
r |
ORE
r |
NE
r |
FE
r |
PE
r |
Bit 0: Parity error This bit is set by hardware when a parity error occurs in receiver mode. It is cleared by software, writing 1 to the PECF in the USART_ICR register. An interrupt is generated if PEIE = 1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 1: Framing error This bit is set by hardware when a de-synchronization, excessive noise or a break character is detected. It is cleared by software, writing 1 to the FECF bit in the USART_ICR register. When transmitting data in Smartcard mode, this bit is set when the maximum number of transmit attempts is reached without success (the card NACKs the data frame). An interrupt is generated if EIE=1 in the USART_CR1 register. Note: This error is associated with the character in the USART_RDR..
Bit 2: Noise detection flag This bit is set by hardware when noise is detected on a received frame. It is cleared by software, writing 1 to the NECF bit in the USART_ICR register. Note: This bit does not generate an interrupt as it appears at the same time as the RXFNE bit which itself generates an interrupt. An interrupt is generated when the NE flag is set during multi buffer communication if the EIE bit is set. When the line is noise-free, the NE flag can be disabled by programming the ONEBIT bit to 1 to increase the USART tolerance to deviations (Refer to Tolerance of the USART receiver to clock deviation on page861). This error is associated with the character in the USART_RDR..
Bit 3: Overrun error This bit is set by hardware when the data currently being received in the shift register is ready to be transferred into the USART_RDR register while RXFF = 1. It is cleared by a software, writing 1 to the ORECF, in the USART_ICR register. An interrupt is generated if RXFNEIE=1 or EIE = 1 in the USART_CR1 register. Note: When this bit is set, the USART_RDR register content is not lost but the shift register is overwritten. An interrupt is generated if the ORE flag is set during multi buffer communication if the EIE bit is set. This bit is permanently forced to 0 (no overrun detection) when the bit OVRDIS is set in the USART_CR3 register..
Bit 4: Idle line detected This bit is set by hardware when an Idle Line is detected. An interrupt is generated if IDLEIE=1 in the USART_CR1 register. It is cleared by software, writing 1 to the IDLECF in the USART_ICR register. Note: The IDLE bit is not set again until the RXFNE bit has been set (i.e. a new idle line occurs). If Mute mode is enabled (MME=1), IDLE is set if the USART is not mute (RWU=0), whatever the Mute mode selected by the WAKE bit. If RWU=1, IDLE is not set..
Bit 5: RXFIFO not empty RXFNE bit is set by hardware when the RXFIFO is not empty, meaning that data can be read from the USART_RDR register. Every read operation from the USART_RDR frees a location in the RXFIFO. RXFNE is cleared when the RXFIFO is empty. The RXFNE flag can also be cleared by writing 1 to the RXFRQ in the USART_RQR register. An interrupt is generated if RXFNEIE=1 in the USART_CR1 register..
Bit 6: Transmission complete This bit indicates that the last data written in the USART_TDR has been transmitted out of the shift register. It is set by hardware when the transmission of a frame containing data is complete and when TXFE is set. An interrupt is generated if TCIE=1 in the USART_CR1 register. TC bit is is cleared by software, by writing 1 to the TCCF in the USART_ICR register or by a write to the USART_TDR register. Note: If TE bit is reset and no transmission is on going, the TC bit is immediately set..
Bit 7: TXFIFO not full TXFNF is set by hardware when TXFIFO is not full meaning that data can be written in the USART_TDR. Every write operation to the USART_TDR places the data in the TXFIFO. This flag remains set until the TXFIFO is full. When the TXFIFO is full, this flag is cleared indicating that data can not be written into the USART_TDR. An interrupt is generated if the TXFNFIE bit =1 in the USART_CR1 register. Note: The TXFNF is kept reset during the flush request until TXFIFO is empty. After sending the flush request (by setting TXFRQ bit), the flag TXFNF should be checked prior to writing in TXFIFO (TXFNF and TXFE are set at the same time). This bit is used during single buffer transmission..
Bit 8: LIN break detection flag This bit is set by hardware when the LIN break is detected. It is cleared by software, by writing 1 to the LBDCF in the USART_ICR. An interrupt is generated if LBDIE = 1 in the USART_CR2 register. Note: If the USART does not support LIN mode, this bit is reserved and kept at reset value. Refer to ..
Bit 9: CTS interrupt flag This bit is set by hardware when the nCTS input toggles, if the CTSE bit is set. It is cleared by software, by writing 1 to the CTSCF bit in the USART_ICR register. An interrupt is generated if CTSIE=1 in the USART_CR3 register. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 10: CTS flag This bit is set/reset by hardware. It is an inverted copy of the status of the nCTS input pin. Note: If the hardware flow control feature is not supported, this bit is reserved and kept at reset value..
Bit 11: Receiver timeout This bit is set by hardware when the timeout value, programmed in the RTOR register has lapsed, without any communication. It is cleared by software, writing 1 to the RTOCF bit in the USART_ICR register. An interrupt is generated if RTOIE=1 in the USART_CR2 register. In Smartcard mode, the timeout corresponds to the CWT or BWT timings. Note: If a time equal to the value programmed in RTOR register separates 2 characters, RTOF is not set. If this time exceeds this value + 2 sample times (2/16 or 2/8, depending on the oversampling method), RTOF flag is set. The counter counts even if RE = 0 but RTOF is set only when RE = 1. If the timeout has already elapsed when RE is set, then RTOF is set. If the USART does not support the Receiver timeout feature, this bit is reserved and kept at reset value..
Bit 12: End of block flag This bit is set by hardware when a complete block has been received (for example T=1 Smartcard mode). The detection is done when the number of received bytes (from the start of the block, including the prologue) is equal or greater than BLEN + 4. An interrupt is generated if the EOBIE=1 in the USART_CR2 register. It is cleared by software, writing 1 to the EOBCF in the USART_ICR register. Note: If Smartcard mode is not supported, this bit is reserved and kept at reset value. Refer to ..
Bit 13: SPI slave underrun error flag In slave transmission mode, this flag is set when the first clock pulse for data transmission appears while the software has not yet loaded any value into USART_TDR. This flag is reset by setting UDRCF bit in the USART_ICR register. Note: If the USART does not support the SPI slave mode, this bit is reserved and kept at reset value. Refer to ..
Bit 14: Auto baud rate error This bit is set by hardware if the baud rate measurement failed (baud rate out of range or character comparison failed) It is cleared by software, by writing 1 to the ABRRQ bit in the USART_CR3 register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 15: Auto baud rate flag This bit is set by hardware when the automatic baud rate has been set (RXFNE is also set, generating an interrupt if RXFNEIE = 1) or when the auto baud rate operation was completed without success (ABRE=1) (ABRE, RXFNE and FE are also set in this case) It is cleared by software, in order to request a new auto baud rate detection, by writing 1 to the ABRRQ in the USART_RQR register. Note: If the USART does not support the auto baud rate feature, this bit is reserved and kept at reset value..
Bit 16: Busy flag This bit is set and reset by hardware. It is active when a communication is ongoing on the RX line (successful start bit detected). It is reset at the end of the reception (successful or not)..
Bit 17: Character match flag This bit is set by hardware, when a the character defined by ADD[7:0] is received. It is cleared by software, writing 1 to the CMCF in the USART_ICR register. An interrupt is generated if CMIE=1in the USART_CR1 register..
Bit 18: Send break flag This bit indicates that a send break character was requested. It is set by software, by writing 1 to the SBKRQ bit in the USART_CR3 register. It is automatically reset by hardware during the stop bit of break transmission..
Bit 19: Receiver wakeup from Mute mode This bit indicates if the USART is in Mute mode. It is cleared/set by hardware when a wakeup/mute sequence is recognized. The Mute mode control sequence (address or IDLE) is selected by the WAKE bit in the USART_CR1 register. When wakeup on IDLE mode is selected, this bit can only be set by software, writing 1 to the MMRQ bit in the USART_RQR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 20: Wakeup from low-power mode flag This bit is set by hardware, when a wakeup event is detected. The event is defined by the WUS bitfield. It is cleared by software, writing a 1 to the WUCF in the USART_ICR register. An interrupt is generated if WUFIE=1 in the USART_CR3 register. Note: When UESM is cleared, WUF flag is also cleared. If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 21: Transmit enable acknowledge flag This bit is set/reset by hardware, when the Transmit Enable value is taken into account by the USART. It can be used when an idle frame request is generated by writing TE=0, followed by TE=1 in the USART_CR1 register, in order to respect the TE=0 minimum period..
Bit 22: Receive enable acknowledge flag This bit is set/reset by hardware, when the Receive Enable value is taken into account by the USART. It can be used to verify that the USART is ready for reception before entering low-power mode. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and kept at reset value. Refer to ..
Bit 23: TXFIFO empty This bit is set by hardware when TXFIFO is empty. When the TXFIFO contains at least one data, this flag is cleared. The TXFE flag can also be set by writing 1 to the bit TXFRQ (bit 4) in the USART_RQR register. An interrupt is generated if the TXFEIE bit =1 (bit 30) in the USART_CR1 register..
Bit 24: RXFIFO full This bit is set by hardware when the number of received data corresponds to RXFIFOsize+1 (RXFIFO full + 1 data in the USART_RDR register. An interrupt is generated if the RXFFIE bit =1 in the USART_CR1 register..
Bit 25: Transmission complete before guard time flag This bit is set when the last data written in the USART_TDR has been transmitted correctly out of the shift register. It is set by hardware in Smartcard mode, if the transmission of a frame containing data is complete and if the smartcard did not send back any NACK. An interrupt is generated if TCBGTIE=1 in the USART_CR3 register. This bit is cleared by software, by writing 1 to the TCBGTCF in the USART_ICR register or by a write to the USART_TDR register. Note: If the USART does not support the Smartcard mode, this bit is reserved and kept at reset value. If the USART supports the Smartcard mode and the Smartcard mode is enabled, the TCBGT reset value is '1'. Refer to on page835..
Allowed values:
0: NotCompleted: Transmission not completed
1: Completed: Transmission has completed
Bit 26: RXFIFO threshold flag This bit is set by hardware when the threshold programmed in RXFTCFG in USART_CR3 register is reached. This means that there are (RXFTCFG - 1) data in the Receive FIFO and one data in the USART_RDR register. An interrupt is generated if the RXFTIE bit =1 (bit 27) in the USART_CR3 register. Note: When the RXFTCFG threshold is configured to '101', RXFT flag is set if 16 data are available i.e. 15 data in the RXFIFO and 1 data in the USART_RDR. Consequently, the 17th received data does not cause an overrun error. The overrun error occurs after receiving the 18th data..
Bit 27: TXFIFO threshold flag This bit is set by hardware when the TXFIFO reaches the threshold programmed in TXFTCFG of USART_CR3 register i.e. the TXFIFO contains TXFTCFG empty locations. An interrupt is generated if the TXFTIE bit =1 (bit 31) in the USART_CR3 register..
Interrupt flag clear register
Offset: 0x20, size: 32, reset: 0x00000000, access: write-only
4/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
WUCF
w |
CMCF
w |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
UDRCF
w |
EOBCF
w |
RTOCF
w |
CTSCF
w |
LBDCF
w |
TCBGTCF
w |
TCCF
w |
TXFECF
w |
IDLECF
w |
ORECF
w |
NECF
w |
FECF
w |
PECF
w |
Bit 0: Parity error clear flag Writing 1 to this bit clears the PE flag in the USART_ISR register..
Bit 1: Framing error clear flag Writing 1 to this bit clears the FE flag in the USART_ISR register..
Bit 2: Noise detected clear flag Writing 1 to this bit clears the NE flag in the USART_ISR register..
Bit 3: Overrun error clear flag Writing 1 to this bit clears the ORE flag in the USART_ISR register..
Bit 4: Idle line detected clear flag Writing 1 to this bit clears the IDLE flag in the USART_ISR register..
Bit 5: TXFIFO empty clear flag Writing 1 to this bit clears the TXFE flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TXFE flag in the ISR register
Bit 6: Transmission complete clear flag Writing 1 to this bit clears the TC flag in the USART_ISR register..
Bit 7: Transmission complete before Guard time clear flag Writing 1 to this bit clears the TCBGT flag in the USART_ISR register..
Allowed values:
1: Clear: Clear the TCBGT flag in the ISR register
Bit 8: LIN break detection clear flag Writing 1 to this bit clears the LBDF flag in the USART_ISR register. Note: If LIN mode is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 9: CTS clear flag Writing 1 to this bit clears the CTSIF flag in the USART_ISR register. Note: If the hardware flow control feature is not supported, this bit is reserved and must be kept at reset value. Refer to ..
Bit 11: Receiver timeout clear flag Writing 1 to this bit clears the RTOF flag in the USART_ISR register. Note: If the USART does not support the Receiver timeout feature, this bit is reserved and must be kept at reset value. Refer to page835..
Bit 12: End of block clear flag Writing 1 to this bit clears the EOBF flag in the USART_ISR register. Note: If the USART does not support Smartcard mode, this bit is reserved and must be kept at reset value. Refer to ..
Bit 13: SPI slave underrun clear flag Writing 1 to this bit clears the UDRF flag in the USART_ISR register. Note: If the USART does not support SPI slave mode, this bit is reserved and must be kept at reset value. Refer to.
Allowed values:
1: Clear: Clear the UDR flag in the ISR register
Bit 17: Character match clear flag Writing 1 to this bit clears the CMF flag in the USART_ISR register..
Bit 20: Wakeup from low-power mode clear flag Writing 1 to this bit clears the WUF flag in the USART_ISR register. Note: If the USART does not support the wakeup from Stop feature, this bit is reserved and must be kept at reset value. Refer to page835..
Allowed values:
1: Clear: Clears the WUF flag in the ISR register
Receive data register
Offset: 0x24, size: 32, reset: 0x00000000, access: read-only
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RDR
r |
Transmit data register
Offset: 0x28, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TDR
rw |
Prescaler register
Offset: 0x2c, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRESCALER
rw |
Bits 0-3: Clock prescaler The USART input clock can be divided by a prescaler factor: Remaining combinations: Reserved Note: When PRESCALER is programmed with a value different of the allowed ones, programmed prescaler value is 1011 i.e. input clock divided by 256..
Allowed values:
0: Div1: Input clock divided by 1
1: Div2: Input clock divided by 2
2: Div4: Input clock divided by 4
3: Div6: Input clock divided by 6
4: Div8: Input clock divided by 8
5: Div10: Input clock divided by 10
6: Div12: Input clock divided by 12
7: Div16: Input clock divided by 16
8: Div32: Input clock divided by 32
9: Div64: Input clock divided by 64
10: Div128: Input clock divided by 128
11: Div256: Input clock divided by 256
0x40005c00: Universal serial bus full-speed host/device interface
29/171 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0x0 | CHEP0R | ||||||||||||||||||||||||||||||||
0x4 | CHEP1R | ||||||||||||||||||||||||||||||||
0x8 | CHEP2R | ||||||||||||||||||||||||||||||||
0xc | CHEP3R | ||||||||||||||||||||||||||||||||
0x10 | CHEP4R | ||||||||||||||||||||||||||||||||
0x14 | CHEP5R | ||||||||||||||||||||||||||||||||
0x18 | CHEP6R | ||||||||||||||||||||||||||||||||
0x1c | CHEP7R | ||||||||||||||||||||||||||||||||
0x40 | CNTR | ||||||||||||||||||||||||||||||||
0x44 | ISTR | ||||||||||||||||||||||||||||||||
0x48 | FNR | ||||||||||||||||||||||||||||||||
0x4c | DADDR | ||||||||||||||||||||||||||||||||
0x54 | LPMCSR | ||||||||||||||||||||||||||||||||
0x58 | BCDR |
USB endpoint/channel 0 register
Offset: 0x0, size: 32, reset: 0x00000000, access: Unspecified
1/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERR_RX
rw |
ERR_TX
rw |
LS_EP
rw |
NAK
rw |
DEVADDR
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
VTRX
rw |
DTOGRX
w |
STATRX
w |
SETUP
r |
UTYPE
rw |
EPKIND
rw |
VTTX
rw |
DTOGTX
w |
STATTX
w |
EA
rw |
Bits 0-3: endpoint/channel address Device mode Software must write in this field the 4-bit address used to identify the transactions directed to this endpoint. A value must be written before enabling the corresponding endpoint. Host mode Software must write in this field the 4-bit address used to identify the channel addressed by the host transaction..
Bits 4-5: Status bits, for transmission transfers Device mode These bits contain the information about the endpoint status, listed in . These bits can be toggled by the software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STTX bits to NAK, when a correct transfer has occurred (VTTX=1) corresponding to a IN or SETUP (control only) transaction addressed to this channel/endpoint. It then waits for the software to prepare the next set of data to be transmitted. Double-buffered bulk endpoints implement a special transaction flow control, which controls the status based on buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can only be 'VALID' or 'DISABLED'. Therefore, the hardware cannot change the status of the channel/endpoint/channel after a successful transaction. If the software sets the STTX bits to 'STALL' or 'NAK' for an Isochronous channel/endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode Same as STRX behaviour but for IN transactions (TBC).
Bit 6: Data Toggle, for transmission transfers If the endpoint/channel is non-isochronous, this bit contains the required value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be transmitted. Hardware toggles this bit when the ACK handshake is received from the USB host, following a data packet transmission. If the endpoint/channel is defined as a control one, hardware sets this bit to 1 at the reception of a SETUP PID addressed to this endpoint. If the endpoint/channel is using the double buffer feature, this bit is used to support packet buffer swapping too (Refer to ) If the endpoint/channel is Isochronous, this bit is used to support packet buffer swapping since no data toggling is used for this sort of endpoints and only DATA0 packet are transmitted (Refer to ). Hardware toggles this bit just after the end of data packet transmission, since no handshake is used for Isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint/channel is not a control one) or to force a specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGTX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can only be toggled by writing 1..
Bit 7: Valid USB transaction transmitted Device mode This bit is set by the hardware when an IN transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in the USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written. Host mode Same of VTRX behaviour but for USB OUT and SETUP transactions..
Bit 8: endpoint/channel kind The meaning of this bit depends on the endpoint/channel type configured by the EP_TYPE bits. summarizes the different meanings. DBL_BUF: This bit is set by the software to enable the double-buffering feature for this bulk endpoint. The usage of double-buffered bulk endpoints is explained in Double-buffered endpoints. STATUS_OUT: This bit is set by the software to indicate that a status out transaction is expected: in this case all OUT transactions containing more than zero data bytes are answered 'STALL' instead of 'ACK'. This bit may be used to improve the robustness of the application to protocol errors during control transfers and its usage is intended for control endpoints only. When STATUS_OUT is reset, OUT transactions can have any number of bytes, as required..
Bits 9-10: USB type of transaction These bits configure the behavior of this endpoint/channel as described in endpoint/channel type encoding on page2001. Channel0/Endpoint0 must always be a control endpoint/channel and each USB function must have at least one control endpoint/channel which has address 0, but there may be other control channels/endpoints if required. Only control channels/endpoints handle SETUP transactions, which are ignored by endpoints of other kinds. SETUP transactions cannot be answered with NAK or STALL. If a control endpoint/channel is defined as NAK, the USB peripheral will not answer, simulating a receive error, in the receive direction when a SETUP transaction is received. If the control endpoint/channel is defined as STALL in the receive direction, then the SETUP packet will be accepted anyway, transferring data and issuing the CTR interrupt. The reception of OUT transactions is handled in the normal way, even if the endpoint/channel is a control one. Bulk and interrupt endpoints have very similar behavior and they differ only in the special feature available using the EPKIND configuration bit. The usage of Isochronous channels/endpoints is explained in transfers.
Bit 11: Setup transaction completed Device mode This bit is read-only and it is set by the hardware when the last completed transaction is a SETUP. This bit changes its value only for control endpoints. It must be examined, in the case of a successful receive transaction (VTRX event), to determine the type of transaction occurred. To protect the interrupt service routine from the changes in SETUP bits due to next incoming tokens, this bit is kept frozen while VTRX bit is at 1; its state changes when VTRX is at 0. This bit is read-only. Host mode This bit is set by the software to send a SETUP transaction on a control endpoint. This bit changes its value only for control endpoints. It is cleared by hardware when the SETUP transaction is acknowledged and VTTX interrupt generated..
Bits 12-13: Status bits, for reception transfers Device mode These bits contain information about the endpoint status, which are listed in Reception status encoding on page2000.These bits can be toggled by software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STRX bits to NAK when a correct transfer has occurred (VTRX=1) corresponding to a OUT or SETUP (control only) transaction addressed to this endpoint, so the software has the time to elaborate the received data before it acknowledge a new transaction Double-buffered bulk endpoints implement a special transaction flow control, which control the status based upon buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can be only 'VALID' or 'DISABLED', so that the hardware cannot change the status of the endpoint after a successful transaction. If the software sets the STRX bits to 'STALL' or 'NAK' for an Isochronous endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode These bits are the host application controls to start, retry, or abort host transactions driven by the channel. These bits also contain information about the device answer to the last IN channel transaction and report the current status of the channel according to the following STRX table of states: - DISABLE DISABLE value is reported in case of ACK acknowledge is received on a single-buffer channel. When in DISABLE state the channel is unused or not active waiting for application to restart it by writing VALID. Application can reset a VALID channel to DISABLE to abort a transaction. In this case the transaction is immediately removed from the Host execution list. If the aborted transaction was already under execution it will be regularly terminated on the USB but the relative VTRX interrupt is not generated. - VALID An Host channel is actively trying to submit USB transaction to device only when in VALID state.VALID state can be set by software or automatically by hardware on a NAKED channel at the start of a new frame. When set to VALID, an host channel enters the host execution queue and waits permission from the Host Frame Schedure to submit its configured transaction. VALID value is also reported in case of ACK acknowledge is received on a double-buffered channel. In this case the channel remains active on the alternate buffer while application needs to read the current buffer and toggle DTOGTX. In case software is late in reading and the alternate buffer is not ready, the host channel is automatically suspended transparently to the application. The suspended double buffered channel will be re-activated as soon as delay is recovered and DTOGTX is toggled. - NAK NAK value is reported in case of NAK acknowledge received. When in NAK state the channel is suspended and does not try to transmit. NAK state is moved to VALID by hardware at the start of the next frame, or software can change it to immediately retry transmission by writing it to VALID, or can disable it and abort the transaction by writing DISABLE - STALL STALL value is reported in case of STALL acknowledge received. When in STALL state the channel behaves as disabled. Application should not retry transmission but reset the USB and re-enumerate..
Bit 14: Data Toggle, for reception transfers If the endpoint/channel is not Isochronous, this bit contains the expected value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be received. Hardware toggles this bit, when the ACK handshake is sent following a data packet reception having a matching data PID value; if the endpoint is defined as a control one, hardware clears this bit at the reception of a SETUP PID received from host (in device) or acknowledged by device (in host). If the endpoint/channel is using the double-buffering feature this bit is used to support packet buffer swapping too (Refer to ). If the endpoint/channel is Isochronous, this bit is used only to support packet buffer swapping for data transmission since no data toggling is used for this kind of channels/endpoints and only DATA0 packet are transmitted (Refer to Isochronous transfers). Hardware toggles this bit just after the end of data packet reception, since no handshake is used for isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint is not a control one) or to force specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGRX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can be only toggled by writing 1..
Bit 15: USB valid transaction received Device mode This bit is set by the hardware when an OUT/SETUP transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. The type of occurred transaction, OUT or SETUP, can be determined from the SETUP bit described below. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written, writing 1 has no effect. Host mode This bit is set by the hardware when an IN transaction is successfully completed on this channel. The software can only clear this bit. If the VTRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated. - A transaction ended with a NAK sets this bit and NAK answer is reported to application reading the NAK state from the STRX field of this register. One naked transaction keeps pending and is automatically retried by the Host at the next frame, or the Host can immediately retry by resetting STRX state to VALID. - A transaction ended by STALL handshake sets this bit and the STALL answer is reported to application reading the STALL state from the STRX field of this register. Host application should consequently disable the channel and re-enumerate. - A transaction ended with ACK handshake sets this bit If double buffering is disabled, ACK answer is reported by application reading the DISABLE state from the STRX field of this register. Host application should read received data from USBRAM and re-arm the channel by writing VALID to the STRX field of this register. If double buffering is enabled, ACK answer is reported by application reading VALID state from the STRX field of this register. Host application should read received data from USBRAM and toggle the DTOGTX bit of this register. This bit is read/write but only '0 can be written, writing 1 has no effect..
Bits 16-22: Host mode Device address assigned to the endpoint during the enumeration process..
Bit 23: Host mode This bit is set by the hardware when a device responds with a NAK. Software can be use this bit to monitoring the number of NAKs received from a device..
Bit 24: Low speed endpoint.
Bit 25: Transmit error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an OUT or SETUP transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
Bit 26: Receive error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an IN transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
USB endpoint/channel 1 register
Offset: 0x4, size: 32, reset: 0x00000000, access: Unspecified
1/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERR_RX
rw |
ERR_TX
rw |
LS_EP
rw |
NAK
rw |
DEVADDR
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
VTRX
rw |
DTOGRX
w |
STATRX
w |
SETUP
r |
UTYPE
rw |
EPKIND
rw |
VTTX
rw |
DTOGTX
w |
STATTX
w |
EA
rw |
Bits 0-3: endpoint/channel address Device mode Software must write in this field the 4-bit address used to identify the transactions directed to this endpoint. A value must be written before enabling the corresponding endpoint. Host mode Software must write in this field the 4-bit address used to identify the channel addressed by the host transaction..
Bits 4-5: Status bits, for transmission transfers Device mode These bits contain the information about the endpoint status, listed in . These bits can be toggled by the software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STTX bits to NAK, when a correct transfer has occurred (VTTX=1) corresponding to a IN or SETUP (control only) transaction addressed to this channel/endpoint. It then waits for the software to prepare the next set of data to be transmitted. Double-buffered bulk endpoints implement a special transaction flow control, which controls the status based on buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can only be 'VALID' or 'DISABLED'. Therefore, the hardware cannot change the status of the channel/endpoint/channel after a successful transaction. If the software sets the STTX bits to 'STALL' or 'NAK' for an Isochronous channel/endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode Same as STRX behaviour but for IN transactions (TBC).
Bit 6: Data Toggle, for transmission transfers If the endpoint/channel is non-isochronous, this bit contains the required value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be transmitted. Hardware toggles this bit when the ACK handshake is received from the USB host, following a data packet transmission. If the endpoint/channel is defined as a control one, hardware sets this bit to 1 at the reception of a SETUP PID addressed to this endpoint. If the endpoint/channel is using the double buffer feature, this bit is used to support packet buffer swapping too (Refer to ) If the endpoint/channel is Isochronous, this bit is used to support packet buffer swapping since no data toggling is used for this sort of endpoints and only DATA0 packet are transmitted (Refer to ). Hardware toggles this bit just after the end of data packet transmission, since no handshake is used for Isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint/channel is not a control one) or to force a specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGTX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can only be toggled by writing 1..
Bit 7: Valid USB transaction transmitted Device mode This bit is set by the hardware when an IN transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in the USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written. Host mode Same of VTRX behaviour but for USB OUT and SETUP transactions..
Bit 8: endpoint/channel kind The meaning of this bit depends on the endpoint/channel type configured by the EP_TYPE bits. summarizes the different meanings. DBL_BUF: This bit is set by the software to enable the double-buffering feature for this bulk endpoint. The usage of double-buffered bulk endpoints is explained in Double-buffered endpoints. STATUS_OUT: This bit is set by the software to indicate that a status out transaction is expected: in this case all OUT transactions containing more than zero data bytes are answered 'STALL' instead of 'ACK'. This bit may be used to improve the robustness of the application to protocol errors during control transfers and its usage is intended for control endpoints only. When STATUS_OUT is reset, OUT transactions can have any number of bytes, as required..
Bits 9-10: USB type of transaction These bits configure the behavior of this endpoint/channel as described in endpoint/channel type encoding on page2001. Channel0/Endpoint0 must always be a control endpoint/channel and each USB function must have at least one control endpoint/channel which has address 0, but there may be other control channels/endpoints if required. Only control channels/endpoints handle SETUP transactions, which are ignored by endpoints of other kinds. SETUP transactions cannot be answered with NAK or STALL. If a control endpoint/channel is defined as NAK, the USB peripheral will not answer, simulating a receive error, in the receive direction when a SETUP transaction is received. If the control endpoint/channel is defined as STALL in the receive direction, then the SETUP packet will be accepted anyway, transferring data and issuing the CTR interrupt. The reception of OUT transactions is handled in the normal way, even if the endpoint/channel is a control one. Bulk and interrupt endpoints have very similar behavior and they differ only in the special feature available using the EPKIND configuration bit. The usage of Isochronous channels/endpoints is explained in transfers.
Bit 11: Setup transaction completed Device mode This bit is read-only and it is set by the hardware when the last completed transaction is a SETUP. This bit changes its value only for control endpoints. It must be examined, in the case of a successful receive transaction (VTRX event), to determine the type of transaction occurred. To protect the interrupt service routine from the changes in SETUP bits due to next incoming tokens, this bit is kept frozen while VTRX bit is at 1; its state changes when VTRX is at 0. This bit is read-only. Host mode This bit is set by the software to send a SETUP transaction on a control endpoint. This bit changes its value only for control endpoints. It is cleared by hardware when the SETUP transaction is acknowledged and VTTX interrupt generated..
Bits 12-13: Status bits, for reception transfers Device mode These bits contain information about the endpoint status, which are listed in Reception status encoding on page2000.These bits can be toggled by software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STRX bits to NAK when a correct transfer has occurred (VTRX=1) corresponding to a OUT or SETUP (control only) transaction addressed to this endpoint, so the software has the time to elaborate the received data before it acknowledge a new transaction Double-buffered bulk endpoints implement a special transaction flow control, which control the status based upon buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can be only 'VALID' or 'DISABLED', so that the hardware cannot change the status of the endpoint after a successful transaction. If the software sets the STRX bits to 'STALL' or 'NAK' for an Isochronous endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode These bits are the host application controls to start, retry, or abort host transactions driven by the channel. These bits also contain information about the device answer to the last IN channel transaction and report the current status of the channel according to the following STRX table of states: - DISABLE DISABLE value is reported in case of ACK acknowledge is received on a single-buffer channel. When in DISABLE state the channel is unused or not active waiting for application to restart it by writing VALID. Application can reset a VALID channel to DISABLE to abort a transaction. In this case the transaction is immediately removed from the Host execution list. If the aborted transaction was already under execution it will be regularly terminated on the USB but the relative VTRX interrupt is not generated. - VALID An Host channel is actively trying to submit USB transaction to device only when in VALID state.VALID state can be set by software or automatically by hardware on a NAKED channel at the start of a new frame. When set to VALID, an host channel enters the host execution queue and waits permission from the Host Frame Schedure to submit its configured transaction. VALID value is also reported in case of ACK acknowledge is received on a double-buffered channel. In this case the channel remains active on the alternate buffer while application needs to read the current buffer and toggle DTOGTX. In case software is late in reading and the alternate buffer is not ready, the host channel is automatically suspended transparently to the application. The suspended double buffered channel will be re-activated as soon as delay is recovered and DTOGTX is toggled. - NAK NAK value is reported in case of NAK acknowledge received. When in NAK state the channel is suspended and does not try to transmit. NAK state is moved to VALID by hardware at the start of the next frame, or software can change it to immediately retry transmission by writing it to VALID, or can disable it and abort the transaction by writing DISABLE - STALL STALL value is reported in case of STALL acknowledge received. When in STALL state the channel behaves as disabled. Application should not retry transmission but reset the USB and re-enumerate..
Bit 14: Data Toggle, for reception transfers If the endpoint/channel is not Isochronous, this bit contains the expected value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be received. Hardware toggles this bit, when the ACK handshake is sent following a data packet reception having a matching data PID value; if the endpoint is defined as a control one, hardware clears this bit at the reception of a SETUP PID received from host (in device) or acknowledged by device (in host). If the endpoint/channel is using the double-buffering feature this bit is used to support packet buffer swapping too (Refer to ). If the endpoint/channel is Isochronous, this bit is used only to support packet buffer swapping for data transmission since no data toggling is used for this kind of channels/endpoints and only DATA0 packet are transmitted (Refer to Isochronous transfers). Hardware toggles this bit just after the end of data packet reception, since no handshake is used for isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint is not a control one) or to force specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGRX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can be only toggled by writing 1..
Bit 15: USB valid transaction received Device mode This bit is set by the hardware when an OUT/SETUP transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. The type of occurred transaction, OUT or SETUP, can be determined from the SETUP bit described below. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written, writing 1 has no effect. Host mode This bit is set by the hardware when an IN transaction is successfully completed on this channel. The software can only clear this bit. If the VTRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated. - A transaction ended with a NAK sets this bit and NAK answer is reported to application reading the NAK state from the STRX field of this register. One naked transaction keeps pending and is automatically retried by the Host at the next frame, or the Host can immediately retry by resetting STRX state to VALID. - A transaction ended by STALL handshake sets this bit and the STALL answer is reported to application reading the STALL state from the STRX field of this register. Host application should consequently disable the channel and re-enumerate. - A transaction ended with ACK handshake sets this bit If double buffering is disabled, ACK answer is reported by application reading the DISABLE state from the STRX field of this register. Host application should read received data from USBRAM and re-arm the channel by writing VALID to the STRX field of this register. If double buffering is enabled, ACK answer is reported by application reading VALID state from the STRX field of this register. Host application should read received data from USBRAM and toggle the DTOGTX bit of this register. This bit is read/write but only '0 can be written, writing 1 has no effect..
Bits 16-22: Host mode Device address assigned to the endpoint during the enumeration process..
Bit 23: Host mode This bit is set by the hardware when a device responds with a NAK. Software can be use this bit to monitoring the number of NAKs received from a device..
Bit 24: Low speed endpoint.
Bit 25: Transmit error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an OUT or SETUP transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
Bit 26: Receive error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an IN transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
USB endpoint/channel 2 register
Offset: 0x8, size: 32, reset: 0x00000000, access: Unspecified
1/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERR_RX
rw |
ERR_TX
rw |
LS_EP
rw |
NAK
rw |
DEVADDR
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
VTRX
rw |
DTOGRX
w |
STATRX
w |
SETUP
r |
UTYPE
rw |
EPKIND
rw |
VTTX
rw |
DTOGTX
w |
STATTX
w |
EA
rw |
Bits 0-3: endpoint/channel address Device mode Software must write in this field the 4-bit address used to identify the transactions directed to this endpoint. A value must be written before enabling the corresponding endpoint. Host mode Software must write in this field the 4-bit address used to identify the channel addressed by the host transaction..
Bits 4-5: Status bits, for transmission transfers Device mode These bits contain the information about the endpoint status, listed in . These bits can be toggled by the software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STTX bits to NAK, when a correct transfer has occurred (VTTX=1) corresponding to a IN or SETUP (control only) transaction addressed to this channel/endpoint. It then waits for the software to prepare the next set of data to be transmitted. Double-buffered bulk endpoints implement a special transaction flow control, which controls the status based on buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can only be 'VALID' or 'DISABLED'. Therefore, the hardware cannot change the status of the channel/endpoint/channel after a successful transaction. If the software sets the STTX bits to 'STALL' or 'NAK' for an Isochronous channel/endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode Same as STRX behaviour but for IN transactions (TBC).
Bit 6: Data Toggle, for transmission transfers If the endpoint/channel is non-isochronous, this bit contains the required value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be transmitted. Hardware toggles this bit when the ACK handshake is received from the USB host, following a data packet transmission. If the endpoint/channel is defined as a control one, hardware sets this bit to 1 at the reception of a SETUP PID addressed to this endpoint. If the endpoint/channel is using the double buffer feature, this bit is used to support packet buffer swapping too (Refer to ) If the endpoint/channel is Isochronous, this bit is used to support packet buffer swapping since no data toggling is used for this sort of endpoints and only DATA0 packet are transmitted (Refer to ). Hardware toggles this bit just after the end of data packet transmission, since no handshake is used for Isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint/channel is not a control one) or to force a specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGTX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can only be toggled by writing 1..
Bit 7: Valid USB transaction transmitted Device mode This bit is set by the hardware when an IN transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in the USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written. Host mode Same of VTRX behaviour but for USB OUT and SETUP transactions..
Bit 8: endpoint/channel kind The meaning of this bit depends on the endpoint/channel type configured by the EP_TYPE bits. summarizes the different meanings. DBL_BUF: This bit is set by the software to enable the double-buffering feature for this bulk endpoint. The usage of double-buffered bulk endpoints is explained in Double-buffered endpoints. STATUS_OUT: This bit is set by the software to indicate that a status out transaction is expected: in this case all OUT transactions containing more than zero data bytes are answered 'STALL' instead of 'ACK'. This bit may be used to improve the robustness of the application to protocol errors during control transfers and its usage is intended for control endpoints only. When STATUS_OUT is reset, OUT transactions can have any number of bytes, as required..
Bits 9-10: USB type of transaction These bits configure the behavior of this endpoint/channel as described in endpoint/channel type encoding on page2001. Channel0/Endpoint0 must always be a control endpoint/channel and each USB function must have at least one control endpoint/channel which has address 0, but there may be other control channels/endpoints if required. Only control channels/endpoints handle SETUP transactions, which are ignored by endpoints of other kinds. SETUP transactions cannot be answered with NAK or STALL. If a control endpoint/channel is defined as NAK, the USB peripheral will not answer, simulating a receive error, in the receive direction when a SETUP transaction is received. If the control endpoint/channel is defined as STALL in the receive direction, then the SETUP packet will be accepted anyway, transferring data and issuing the CTR interrupt. The reception of OUT transactions is handled in the normal way, even if the endpoint/channel is a control one. Bulk and interrupt endpoints have very similar behavior and they differ only in the special feature available using the EPKIND configuration bit. The usage of Isochronous channels/endpoints is explained in transfers.
Bit 11: Setup transaction completed Device mode This bit is read-only and it is set by the hardware when the last completed transaction is a SETUP. This bit changes its value only for control endpoints. It must be examined, in the case of a successful receive transaction (VTRX event), to determine the type of transaction occurred. To protect the interrupt service routine from the changes in SETUP bits due to next incoming tokens, this bit is kept frozen while VTRX bit is at 1; its state changes when VTRX is at 0. This bit is read-only. Host mode This bit is set by the software to send a SETUP transaction on a control endpoint. This bit changes its value only for control endpoints. It is cleared by hardware when the SETUP transaction is acknowledged and VTTX interrupt generated..
Bits 12-13: Status bits, for reception transfers Device mode These bits contain information about the endpoint status, which are listed in Reception status encoding on page2000.These bits can be toggled by software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STRX bits to NAK when a correct transfer has occurred (VTRX=1) corresponding to a OUT or SETUP (control only) transaction addressed to this endpoint, so the software has the time to elaborate the received data before it acknowledge a new transaction Double-buffered bulk endpoints implement a special transaction flow control, which control the status based upon buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can be only 'VALID' or 'DISABLED', so that the hardware cannot change the status of the endpoint after a successful transaction. If the software sets the STRX bits to 'STALL' or 'NAK' for an Isochronous endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode These bits are the host application controls to start, retry, or abort host transactions driven by the channel. These bits also contain information about the device answer to the last IN channel transaction and report the current status of the channel according to the following STRX table of states: - DISABLE DISABLE value is reported in case of ACK acknowledge is received on a single-buffer channel. When in DISABLE state the channel is unused or not active waiting for application to restart it by writing VALID. Application can reset a VALID channel to DISABLE to abort a transaction. In this case the transaction is immediately removed from the Host execution list. If the aborted transaction was already under execution it will be regularly terminated on the USB but the relative VTRX interrupt is not generated. - VALID An Host channel is actively trying to submit USB transaction to device only when in VALID state.VALID state can be set by software or automatically by hardware on a NAKED channel at the start of a new frame. When set to VALID, an host channel enters the host execution queue and waits permission from the Host Frame Schedure to submit its configured transaction. VALID value is also reported in case of ACK acknowledge is received on a double-buffered channel. In this case the channel remains active on the alternate buffer while application needs to read the current buffer and toggle DTOGTX. In case software is late in reading and the alternate buffer is not ready, the host channel is automatically suspended transparently to the application. The suspended double buffered channel will be re-activated as soon as delay is recovered and DTOGTX is toggled. - NAK NAK value is reported in case of NAK acknowledge received. When in NAK state the channel is suspended and does not try to transmit. NAK state is moved to VALID by hardware at the start of the next frame, or software can change it to immediately retry transmission by writing it to VALID, or can disable it and abort the transaction by writing DISABLE - STALL STALL value is reported in case of STALL acknowledge received. When in STALL state the channel behaves as disabled. Application should not retry transmission but reset the USB and re-enumerate..
Bit 14: Data Toggle, for reception transfers If the endpoint/channel is not Isochronous, this bit contains the expected value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be received. Hardware toggles this bit, when the ACK handshake is sent following a data packet reception having a matching data PID value; if the endpoint is defined as a control one, hardware clears this bit at the reception of a SETUP PID received from host (in device) or acknowledged by device (in host). If the endpoint/channel is using the double-buffering feature this bit is used to support packet buffer swapping too (Refer to ). If the endpoint/channel is Isochronous, this bit is used only to support packet buffer swapping for data transmission since no data toggling is used for this kind of channels/endpoints and only DATA0 packet are transmitted (Refer to Isochronous transfers). Hardware toggles this bit just after the end of data packet reception, since no handshake is used for isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint is not a control one) or to force specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGRX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can be only toggled by writing 1..
Bit 15: USB valid transaction received Device mode This bit is set by the hardware when an OUT/SETUP transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. The type of occurred transaction, OUT or SETUP, can be determined from the SETUP bit described below. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written, writing 1 has no effect. Host mode This bit is set by the hardware when an IN transaction is successfully completed on this channel. The software can only clear this bit. If the VTRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated. - A transaction ended with a NAK sets this bit and NAK answer is reported to application reading the NAK state from the STRX field of this register. One naked transaction keeps pending and is automatically retried by the Host at the next frame, or the Host can immediately retry by resetting STRX state to VALID. - A transaction ended by STALL handshake sets this bit and the STALL answer is reported to application reading the STALL state from the STRX field of this register. Host application should consequently disable the channel and re-enumerate. - A transaction ended with ACK handshake sets this bit If double buffering is disabled, ACK answer is reported by application reading the DISABLE state from the STRX field of this register. Host application should read received data from USBRAM and re-arm the channel by writing VALID to the STRX field of this register. If double buffering is enabled, ACK answer is reported by application reading VALID state from the STRX field of this register. Host application should read received data from USBRAM and toggle the DTOGTX bit of this register. This bit is read/write but only '0 can be written, writing 1 has no effect..
Bits 16-22: Host mode Device address assigned to the endpoint during the enumeration process..
Bit 23: Host mode This bit is set by the hardware when a device responds with a NAK. Software can be use this bit to monitoring the number of NAKs received from a device..
Bit 24: Low speed endpoint.
Bit 25: Transmit error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an OUT or SETUP transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
Bit 26: Receive error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an IN transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
USB endpoint/channel 3 register
Offset: 0xc, size: 32, reset: 0x00000000, access: Unspecified
1/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERR_RX
rw |
ERR_TX
rw |
LS_EP
rw |
NAK
rw |
DEVADDR
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
VTRX
rw |
DTOGRX
w |
STATRX
w |
SETUP
r |
UTYPE
rw |
EPKIND
rw |
VTTX
rw |
DTOGTX
w |
STATTX
w |
EA
rw |
Bits 0-3: endpoint/channel address Device mode Software must write in this field the 4-bit address used to identify the transactions directed to this endpoint. A value must be written before enabling the corresponding endpoint. Host mode Software must write in this field the 4-bit address used to identify the channel addressed by the host transaction..
Bits 4-5: Status bits, for transmission transfers Device mode These bits contain the information about the endpoint status, listed in . These bits can be toggled by the software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STTX bits to NAK, when a correct transfer has occurred (VTTX=1) corresponding to a IN or SETUP (control only) transaction addressed to this channel/endpoint. It then waits for the software to prepare the next set of data to be transmitted. Double-buffered bulk endpoints implement a special transaction flow control, which controls the status based on buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can only be 'VALID' or 'DISABLED'. Therefore, the hardware cannot change the status of the channel/endpoint/channel after a successful transaction. If the software sets the STTX bits to 'STALL' or 'NAK' for an Isochronous channel/endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode Same as STRX behaviour but for IN transactions (TBC).
Bit 6: Data Toggle, for transmission transfers If the endpoint/channel is non-isochronous, this bit contains the required value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be transmitted. Hardware toggles this bit when the ACK handshake is received from the USB host, following a data packet transmission. If the endpoint/channel is defined as a control one, hardware sets this bit to 1 at the reception of a SETUP PID addressed to this endpoint. If the endpoint/channel is using the double buffer feature, this bit is used to support packet buffer swapping too (Refer to ) If the endpoint/channel is Isochronous, this bit is used to support packet buffer swapping since no data toggling is used for this sort of endpoints and only DATA0 packet are transmitted (Refer to ). Hardware toggles this bit just after the end of data packet transmission, since no handshake is used for Isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint/channel is not a control one) or to force a specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGTX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can only be toggled by writing 1..
Bit 7: Valid USB transaction transmitted Device mode This bit is set by the hardware when an IN transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in the USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written. Host mode Same of VTRX behaviour but for USB OUT and SETUP transactions..
Bit 8: endpoint/channel kind The meaning of this bit depends on the endpoint/channel type configured by the EP_TYPE bits. summarizes the different meanings. DBL_BUF: This bit is set by the software to enable the double-buffering feature for this bulk endpoint. The usage of double-buffered bulk endpoints is explained in Double-buffered endpoints. STATUS_OUT: This bit is set by the software to indicate that a status out transaction is expected: in this case all OUT transactions containing more than zero data bytes are answered 'STALL' instead of 'ACK'. This bit may be used to improve the robustness of the application to protocol errors during control transfers and its usage is intended for control endpoints only. When STATUS_OUT is reset, OUT transactions can have any number of bytes, as required..
Bits 9-10: USB type of transaction These bits configure the behavior of this endpoint/channel as described in endpoint/channel type encoding on page2001. Channel0/Endpoint0 must always be a control endpoint/channel and each USB function must have at least one control endpoint/channel which has address 0, but there may be other control channels/endpoints if required. Only control channels/endpoints handle SETUP transactions, which are ignored by endpoints of other kinds. SETUP transactions cannot be answered with NAK or STALL. If a control endpoint/channel is defined as NAK, the USB peripheral will not answer, simulating a receive error, in the receive direction when a SETUP transaction is received. If the control endpoint/channel is defined as STALL in the receive direction, then the SETUP packet will be accepted anyway, transferring data and issuing the CTR interrupt. The reception of OUT transactions is handled in the normal way, even if the endpoint/channel is a control one. Bulk and interrupt endpoints have very similar behavior and they differ only in the special feature available using the EPKIND configuration bit. The usage of Isochronous channels/endpoints is explained in transfers.
Bit 11: Setup transaction completed Device mode This bit is read-only and it is set by the hardware when the last completed transaction is a SETUP. This bit changes its value only for control endpoints. It must be examined, in the case of a successful receive transaction (VTRX event), to determine the type of transaction occurred. To protect the interrupt service routine from the changes in SETUP bits due to next incoming tokens, this bit is kept frozen while VTRX bit is at 1; its state changes when VTRX is at 0. This bit is read-only. Host mode This bit is set by the software to send a SETUP transaction on a control endpoint. This bit changes its value only for control endpoints. It is cleared by hardware when the SETUP transaction is acknowledged and VTTX interrupt generated..
Bits 12-13: Status bits, for reception transfers Device mode These bits contain information about the endpoint status, which are listed in Reception status encoding on page2000.These bits can be toggled by software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STRX bits to NAK when a correct transfer has occurred (VTRX=1) corresponding to a OUT or SETUP (control only) transaction addressed to this endpoint, so the software has the time to elaborate the received data before it acknowledge a new transaction Double-buffered bulk endpoints implement a special transaction flow control, which control the status based upon buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can be only 'VALID' or 'DISABLED', so that the hardware cannot change the status of the endpoint after a successful transaction. If the software sets the STRX bits to 'STALL' or 'NAK' for an Isochronous endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode These bits are the host application controls to start, retry, or abort host transactions driven by the channel. These bits also contain information about the device answer to the last IN channel transaction and report the current status of the channel according to the following STRX table of states: - DISABLE DISABLE value is reported in case of ACK acknowledge is received on a single-buffer channel. When in DISABLE state the channel is unused or not active waiting for application to restart it by writing VALID. Application can reset a VALID channel to DISABLE to abort a transaction. In this case the transaction is immediately removed from the Host execution list. If the aborted transaction was already under execution it will be regularly terminated on the USB but the relative VTRX interrupt is not generated. - VALID An Host channel is actively trying to submit USB transaction to device only when in VALID state.VALID state can be set by software or automatically by hardware on a NAKED channel at the start of a new frame. When set to VALID, an host channel enters the host execution queue and waits permission from the Host Frame Schedure to submit its configured transaction. VALID value is also reported in case of ACK acknowledge is received on a double-buffered channel. In this case the channel remains active on the alternate buffer while application needs to read the current buffer and toggle DTOGTX. In case software is late in reading and the alternate buffer is not ready, the host channel is automatically suspended transparently to the application. The suspended double buffered channel will be re-activated as soon as delay is recovered and DTOGTX is toggled. - NAK NAK value is reported in case of NAK acknowledge received. When in NAK state the channel is suspended and does not try to transmit. NAK state is moved to VALID by hardware at the start of the next frame, or software can change it to immediately retry transmission by writing it to VALID, or can disable it and abort the transaction by writing DISABLE - STALL STALL value is reported in case of STALL acknowledge received. When in STALL state the channel behaves as disabled. Application should not retry transmission but reset the USB and re-enumerate..
Bit 14: Data Toggle, for reception transfers If the endpoint/channel is not Isochronous, this bit contains the expected value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be received. Hardware toggles this bit, when the ACK handshake is sent following a data packet reception having a matching data PID value; if the endpoint is defined as a control one, hardware clears this bit at the reception of a SETUP PID received from host (in device) or acknowledged by device (in host). If the endpoint/channel is using the double-buffering feature this bit is used to support packet buffer swapping too (Refer to ). If the endpoint/channel is Isochronous, this bit is used only to support packet buffer swapping for data transmission since no data toggling is used for this kind of channels/endpoints and only DATA0 packet are transmitted (Refer to Isochronous transfers). Hardware toggles this bit just after the end of data packet reception, since no handshake is used for isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint is not a control one) or to force specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGRX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can be only toggled by writing 1..
Bit 15: USB valid transaction received Device mode This bit is set by the hardware when an OUT/SETUP transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. The type of occurred transaction, OUT or SETUP, can be determined from the SETUP bit described below. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written, writing 1 has no effect. Host mode This bit is set by the hardware when an IN transaction is successfully completed on this channel. The software can only clear this bit. If the VTRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated. - A transaction ended with a NAK sets this bit and NAK answer is reported to application reading the NAK state from the STRX field of this register. One naked transaction keeps pending and is automatically retried by the Host at the next frame, or the Host can immediately retry by resetting STRX state to VALID. - A transaction ended by STALL handshake sets this bit and the STALL answer is reported to application reading the STALL state from the STRX field of this register. Host application should consequently disable the channel and re-enumerate. - A transaction ended with ACK handshake sets this bit If double buffering is disabled, ACK answer is reported by application reading the DISABLE state from the STRX field of this register. Host application should read received data from USBRAM and re-arm the channel by writing VALID to the STRX field of this register. If double buffering is enabled, ACK answer is reported by application reading VALID state from the STRX field of this register. Host application should read received data from USBRAM and toggle the DTOGTX bit of this register. This bit is read/write but only '0 can be written, writing 1 has no effect..
Bits 16-22: Host mode Device address assigned to the endpoint during the enumeration process..
Bit 23: Host mode This bit is set by the hardware when a device responds with a NAK. Software can be use this bit to monitoring the number of NAKs received from a device..
Bit 24: Low speed endpoint.
Bit 25: Transmit error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an OUT or SETUP transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
Bit 26: Receive error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an IN transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
USB endpoint/channel 4 register
Offset: 0x10, size: 32, reset: 0x00000000, access: Unspecified
1/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERR_RX
rw |
ERR_TX
rw |
LS_EP
rw |
NAK
rw |
DEVADDR
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
VTRX
rw |
DTOGRX
w |
STATRX
w |
SETUP
r |
UTYPE
rw |
EPKIND
rw |
VTTX
rw |
DTOGTX
w |
STATTX
w |
EA
rw |
Bits 0-3: endpoint/channel address Device mode Software must write in this field the 4-bit address used to identify the transactions directed to this endpoint. A value must be written before enabling the corresponding endpoint. Host mode Software must write in this field the 4-bit address used to identify the channel addressed by the host transaction..
Bits 4-5: Status bits, for transmission transfers Device mode These bits contain the information about the endpoint status, listed in . These bits can be toggled by the software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STTX bits to NAK, when a correct transfer has occurred (VTTX=1) corresponding to a IN or SETUP (control only) transaction addressed to this channel/endpoint. It then waits for the software to prepare the next set of data to be transmitted. Double-buffered bulk endpoints implement a special transaction flow control, which controls the status based on buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can only be 'VALID' or 'DISABLED'. Therefore, the hardware cannot change the status of the channel/endpoint/channel after a successful transaction. If the software sets the STTX bits to 'STALL' or 'NAK' for an Isochronous channel/endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode Same as STRX behaviour but for IN transactions (TBC).
Bit 6: Data Toggle, for transmission transfers If the endpoint/channel is non-isochronous, this bit contains the required value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be transmitted. Hardware toggles this bit when the ACK handshake is received from the USB host, following a data packet transmission. If the endpoint/channel is defined as a control one, hardware sets this bit to 1 at the reception of a SETUP PID addressed to this endpoint. If the endpoint/channel is using the double buffer feature, this bit is used to support packet buffer swapping too (Refer to ) If the endpoint/channel is Isochronous, this bit is used to support packet buffer swapping since no data toggling is used for this sort of endpoints and only DATA0 packet are transmitted (Refer to ). Hardware toggles this bit just after the end of data packet transmission, since no handshake is used for Isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint/channel is not a control one) or to force a specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGTX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can only be toggled by writing 1..
Bit 7: Valid USB transaction transmitted Device mode This bit is set by the hardware when an IN transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in the USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written. Host mode Same of VTRX behaviour but for USB OUT and SETUP transactions..
Bit 8: endpoint/channel kind The meaning of this bit depends on the endpoint/channel type configured by the EP_TYPE bits. summarizes the different meanings. DBL_BUF: This bit is set by the software to enable the double-buffering feature for this bulk endpoint. The usage of double-buffered bulk endpoints is explained in Double-buffered endpoints. STATUS_OUT: This bit is set by the software to indicate that a status out transaction is expected: in this case all OUT transactions containing more than zero data bytes are answered 'STALL' instead of 'ACK'. This bit may be used to improve the robustness of the application to protocol errors during control transfers and its usage is intended for control endpoints only. When STATUS_OUT is reset, OUT transactions can have any number of bytes, as required..
Bits 9-10: USB type of transaction These bits configure the behavior of this endpoint/channel as described in endpoint/channel type encoding on page2001. Channel0/Endpoint0 must always be a control endpoint/channel and each USB function must have at least one control endpoint/channel which has address 0, but there may be other control channels/endpoints if required. Only control channels/endpoints handle SETUP transactions, which are ignored by endpoints of other kinds. SETUP transactions cannot be answered with NAK or STALL. If a control endpoint/channel is defined as NAK, the USB peripheral will not answer, simulating a receive error, in the receive direction when a SETUP transaction is received. If the control endpoint/channel is defined as STALL in the receive direction, then the SETUP packet will be accepted anyway, transferring data and issuing the CTR interrupt. The reception of OUT transactions is handled in the normal way, even if the endpoint/channel is a control one. Bulk and interrupt endpoints have very similar behavior and they differ only in the special feature available using the EPKIND configuration bit. The usage of Isochronous channels/endpoints is explained in transfers.
Bit 11: Setup transaction completed Device mode This bit is read-only and it is set by the hardware when the last completed transaction is a SETUP. This bit changes its value only for control endpoints. It must be examined, in the case of a successful receive transaction (VTRX event), to determine the type of transaction occurred. To protect the interrupt service routine from the changes in SETUP bits due to next incoming tokens, this bit is kept frozen while VTRX bit is at 1; its state changes when VTRX is at 0. This bit is read-only. Host mode This bit is set by the software to send a SETUP transaction on a control endpoint. This bit changes its value only for control endpoints. It is cleared by hardware when the SETUP transaction is acknowledged and VTTX interrupt generated..
Bits 12-13: Status bits, for reception transfers Device mode These bits contain information about the endpoint status, which are listed in Reception status encoding on page2000.These bits can be toggled by software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STRX bits to NAK when a correct transfer has occurred (VTRX=1) corresponding to a OUT or SETUP (control only) transaction addressed to this endpoint, so the software has the time to elaborate the received data before it acknowledge a new transaction Double-buffered bulk endpoints implement a special transaction flow control, which control the status based upon buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can be only 'VALID' or 'DISABLED', so that the hardware cannot change the status of the endpoint after a successful transaction. If the software sets the STRX bits to 'STALL' or 'NAK' for an Isochronous endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode These bits are the host application controls to start, retry, or abort host transactions driven by the channel. These bits also contain information about the device answer to the last IN channel transaction and report the current status of the channel according to the following STRX table of states: - DISABLE DISABLE value is reported in case of ACK acknowledge is received on a single-buffer channel. When in DISABLE state the channel is unused or not active waiting for application to restart it by writing VALID. Application can reset a VALID channel to DISABLE to abort a transaction. In this case the transaction is immediately removed from the Host execution list. If the aborted transaction was already under execution it will be regularly terminated on the USB but the relative VTRX interrupt is not generated. - VALID An Host channel is actively trying to submit USB transaction to device only when in VALID state.VALID state can be set by software or automatically by hardware on a NAKED channel at the start of a new frame. When set to VALID, an host channel enters the host execution queue and waits permission from the Host Frame Schedure to submit its configured transaction. VALID value is also reported in case of ACK acknowledge is received on a double-buffered channel. In this case the channel remains active on the alternate buffer while application needs to read the current buffer and toggle DTOGTX. In case software is late in reading and the alternate buffer is not ready, the host channel is automatically suspended transparently to the application. The suspended double buffered channel will be re-activated as soon as delay is recovered and DTOGTX is toggled. - NAK NAK value is reported in case of NAK acknowledge received. When in NAK state the channel is suspended and does not try to transmit. NAK state is moved to VALID by hardware at the start of the next frame, or software can change it to immediately retry transmission by writing it to VALID, or can disable it and abort the transaction by writing DISABLE - STALL STALL value is reported in case of STALL acknowledge received. When in STALL state the channel behaves as disabled. Application should not retry transmission but reset the USB and re-enumerate..
Bit 14: Data Toggle, for reception transfers If the endpoint/channel is not Isochronous, this bit contains the expected value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be received. Hardware toggles this bit, when the ACK handshake is sent following a data packet reception having a matching data PID value; if the endpoint is defined as a control one, hardware clears this bit at the reception of a SETUP PID received from host (in device) or acknowledged by device (in host). If the endpoint/channel is using the double-buffering feature this bit is used to support packet buffer swapping too (Refer to ). If the endpoint/channel is Isochronous, this bit is used only to support packet buffer swapping for data transmission since no data toggling is used for this kind of channels/endpoints and only DATA0 packet are transmitted (Refer to Isochronous transfers). Hardware toggles this bit just after the end of data packet reception, since no handshake is used for isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint is not a control one) or to force specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGRX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can be only toggled by writing 1..
Bit 15: USB valid transaction received Device mode This bit is set by the hardware when an OUT/SETUP transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. The type of occurred transaction, OUT or SETUP, can be determined from the SETUP bit described below. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written, writing 1 has no effect. Host mode This bit is set by the hardware when an IN transaction is successfully completed on this channel. The software can only clear this bit. If the VTRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated. - A transaction ended with a NAK sets this bit and NAK answer is reported to application reading the NAK state from the STRX field of this register. One naked transaction keeps pending and is automatically retried by the Host at the next frame, or the Host can immediately retry by resetting STRX state to VALID. - A transaction ended by STALL handshake sets this bit and the STALL answer is reported to application reading the STALL state from the STRX field of this register. Host application should consequently disable the channel and re-enumerate. - A transaction ended with ACK handshake sets this bit If double buffering is disabled, ACK answer is reported by application reading the DISABLE state from the STRX field of this register. Host application should read received data from USBRAM and re-arm the channel by writing VALID to the STRX field of this register. If double buffering is enabled, ACK answer is reported by application reading VALID state from the STRX field of this register. Host application should read received data from USBRAM and toggle the DTOGTX bit of this register. This bit is read/write but only '0 can be written, writing 1 has no effect..
Bits 16-22: Host mode Device address assigned to the endpoint during the enumeration process..
Bit 23: Host mode This bit is set by the hardware when a device responds with a NAK. Software can be use this bit to monitoring the number of NAKs received from a device..
Bit 24: Low speed endpoint.
Bit 25: Transmit error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an OUT or SETUP transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
Bit 26: Receive error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an IN transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
USB endpoint/channel 5 register
Offset: 0x14, size: 32, reset: 0x00000000, access: Unspecified
1/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERR_RX
rw |
ERR_TX
rw |
LS_EP
rw |
NAK
rw |
DEVADDR
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
VTRX
rw |
DTOGRX
w |
STATRX
w |
SETUP
r |
UTYPE
rw |
EPKIND
rw |
VTTX
rw |
DTOGTX
w |
STATTX
w |
EA
rw |
Bits 0-3: endpoint/channel address Device mode Software must write in this field the 4-bit address used to identify the transactions directed to this endpoint. A value must be written before enabling the corresponding endpoint. Host mode Software must write in this field the 4-bit address used to identify the channel addressed by the host transaction..
Bits 4-5: Status bits, for transmission transfers Device mode These bits contain the information about the endpoint status, listed in . These bits can be toggled by the software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STTX bits to NAK, when a correct transfer has occurred (VTTX=1) corresponding to a IN or SETUP (control only) transaction addressed to this channel/endpoint. It then waits for the software to prepare the next set of data to be transmitted. Double-buffered bulk endpoints implement a special transaction flow control, which controls the status based on buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can only be 'VALID' or 'DISABLED'. Therefore, the hardware cannot change the status of the channel/endpoint/channel after a successful transaction. If the software sets the STTX bits to 'STALL' or 'NAK' for an Isochronous channel/endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode Same as STRX behaviour but for IN transactions (TBC).
Bit 6: Data Toggle, for transmission transfers If the endpoint/channel is non-isochronous, this bit contains the required value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be transmitted. Hardware toggles this bit when the ACK handshake is received from the USB host, following a data packet transmission. If the endpoint/channel is defined as a control one, hardware sets this bit to 1 at the reception of a SETUP PID addressed to this endpoint. If the endpoint/channel is using the double buffer feature, this bit is used to support packet buffer swapping too (Refer to ) If the endpoint/channel is Isochronous, this bit is used to support packet buffer swapping since no data toggling is used for this sort of endpoints and only DATA0 packet are transmitted (Refer to ). Hardware toggles this bit just after the end of data packet transmission, since no handshake is used for Isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint/channel is not a control one) or to force a specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGTX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can only be toggled by writing 1..
Bit 7: Valid USB transaction transmitted Device mode This bit is set by the hardware when an IN transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in the USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written. Host mode Same of VTRX behaviour but for USB OUT and SETUP transactions..
Bit 8: endpoint/channel kind The meaning of this bit depends on the endpoint/channel type configured by the EP_TYPE bits. summarizes the different meanings. DBL_BUF: This bit is set by the software to enable the double-buffering feature for this bulk endpoint. The usage of double-buffered bulk endpoints is explained in Double-buffered endpoints. STATUS_OUT: This bit is set by the software to indicate that a status out transaction is expected: in this case all OUT transactions containing more than zero data bytes are answered 'STALL' instead of 'ACK'. This bit may be used to improve the robustness of the application to protocol errors during control transfers and its usage is intended for control endpoints only. When STATUS_OUT is reset, OUT transactions can have any number of bytes, as required..
Bits 9-10: USB type of transaction These bits configure the behavior of this endpoint/channel as described in endpoint/channel type encoding on page2001. Channel0/Endpoint0 must always be a control endpoint/channel and each USB function must have at least one control endpoint/channel which has address 0, but there may be other control channels/endpoints if required. Only control channels/endpoints handle SETUP transactions, which are ignored by endpoints of other kinds. SETUP transactions cannot be answered with NAK or STALL. If a control endpoint/channel is defined as NAK, the USB peripheral will not answer, simulating a receive error, in the receive direction when a SETUP transaction is received. If the control endpoint/channel is defined as STALL in the receive direction, then the SETUP packet will be accepted anyway, transferring data and issuing the CTR interrupt. The reception of OUT transactions is handled in the normal way, even if the endpoint/channel is a control one. Bulk and interrupt endpoints have very similar behavior and they differ only in the special feature available using the EPKIND configuration bit. The usage of Isochronous channels/endpoints is explained in transfers.
Bit 11: Setup transaction completed Device mode This bit is read-only and it is set by the hardware when the last completed transaction is a SETUP. This bit changes its value only for control endpoints. It must be examined, in the case of a successful receive transaction (VTRX event), to determine the type of transaction occurred. To protect the interrupt service routine from the changes in SETUP bits due to next incoming tokens, this bit is kept frozen while VTRX bit is at 1; its state changes when VTRX is at 0. This bit is read-only. Host mode This bit is set by the software to send a SETUP transaction on a control endpoint. This bit changes its value only for control endpoints. It is cleared by hardware when the SETUP transaction is acknowledged and VTTX interrupt generated..
Bits 12-13: Status bits, for reception transfers Device mode These bits contain information about the endpoint status, which are listed in Reception status encoding on page2000.These bits can be toggled by software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STRX bits to NAK when a correct transfer has occurred (VTRX=1) corresponding to a OUT or SETUP (control only) transaction addressed to this endpoint, so the software has the time to elaborate the received data before it acknowledge a new transaction Double-buffered bulk endpoints implement a special transaction flow control, which control the status based upon buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can be only 'VALID' or 'DISABLED', so that the hardware cannot change the status of the endpoint after a successful transaction. If the software sets the STRX bits to 'STALL' or 'NAK' for an Isochronous endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode These bits are the host application controls to start, retry, or abort host transactions driven by the channel. These bits also contain information about the device answer to the last IN channel transaction and report the current status of the channel according to the following STRX table of states: - DISABLE DISABLE value is reported in case of ACK acknowledge is received on a single-buffer channel. When in DISABLE state the channel is unused or not active waiting for application to restart it by writing VALID. Application can reset a VALID channel to DISABLE to abort a transaction. In this case the transaction is immediately removed from the Host execution list. If the aborted transaction was already under execution it will be regularly terminated on the USB but the relative VTRX interrupt is not generated. - VALID An Host channel is actively trying to submit USB transaction to device only when in VALID state.VALID state can be set by software or automatically by hardware on a NAKED channel at the start of a new frame. When set to VALID, an host channel enters the host execution queue and waits permission from the Host Frame Schedure to submit its configured transaction. VALID value is also reported in case of ACK acknowledge is received on a double-buffered channel. In this case the channel remains active on the alternate buffer while application needs to read the current buffer and toggle DTOGTX. In case software is late in reading and the alternate buffer is not ready, the host channel is automatically suspended transparently to the application. The suspended double buffered channel will be re-activated as soon as delay is recovered and DTOGTX is toggled. - NAK NAK value is reported in case of NAK acknowledge received. When in NAK state the channel is suspended and does not try to transmit. NAK state is moved to VALID by hardware at the start of the next frame, or software can change it to immediately retry transmission by writing it to VALID, or can disable it and abort the transaction by writing DISABLE - STALL STALL value is reported in case of STALL acknowledge received. When in STALL state the channel behaves as disabled. Application should not retry transmission but reset the USB and re-enumerate..
Bit 14: Data Toggle, for reception transfers If the endpoint/channel is not Isochronous, this bit contains the expected value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be received. Hardware toggles this bit, when the ACK handshake is sent following a data packet reception having a matching data PID value; if the endpoint is defined as a control one, hardware clears this bit at the reception of a SETUP PID received from host (in device) or acknowledged by device (in host). If the endpoint/channel is using the double-buffering feature this bit is used to support packet buffer swapping too (Refer to ). If the endpoint/channel is Isochronous, this bit is used only to support packet buffer swapping for data transmission since no data toggling is used for this kind of channels/endpoints and only DATA0 packet are transmitted (Refer to Isochronous transfers). Hardware toggles this bit just after the end of data packet reception, since no handshake is used for isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint is not a control one) or to force specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGRX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can be only toggled by writing 1..
Bit 15: USB valid transaction received Device mode This bit is set by the hardware when an OUT/SETUP transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. The type of occurred transaction, OUT or SETUP, can be determined from the SETUP bit described below. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written, writing 1 has no effect. Host mode This bit is set by the hardware when an IN transaction is successfully completed on this channel. The software can only clear this bit. If the VTRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated. - A transaction ended with a NAK sets this bit and NAK answer is reported to application reading the NAK state from the STRX field of this register. One naked transaction keeps pending and is automatically retried by the Host at the next frame, or the Host can immediately retry by resetting STRX state to VALID. - A transaction ended by STALL handshake sets this bit and the STALL answer is reported to application reading the STALL state from the STRX field of this register. Host application should consequently disable the channel and re-enumerate. - A transaction ended with ACK handshake sets this bit If double buffering is disabled, ACK answer is reported by application reading the DISABLE state from the STRX field of this register. Host application should read received data from USBRAM and re-arm the channel by writing VALID to the STRX field of this register. If double buffering is enabled, ACK answer is reported by application reading VALID state from the STRX field of this register. Host application should read received data from USBRAM and toggle the DTOGTX bit of this register. This bit is read/write but only '0 can be written, writing 1 has no effect..
Bits 16-22: Host mode Device address assigned to the endpoint during the enumeration process..
Bit 23: Host mode This bit is set by the hardware when a device responds with a NAK. Software can be use this bit to monitoring the number of NAKs received from a device..
Bit 24: Low speed endpoint.
Bit 25: Transmit error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an OUT or SETUP transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
Bit 26: Receive error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an IN transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
USB endpoint/channel 6 register
Offset: 0x18, size: 32, reset: 0x00000000, access: Unspecified
1/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERR_RX
rw |
ERR_TX
rw |
LS_EP
rw |
NAK
rw |
DEVADDR
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
VTRX
rw |
DTOGRX
w |
STATRX
w |
SETUP
r |
UTYPE
rw |
EPKIND
rw |
VTTX
rw |
DTOGTX
w |
STATTX
w |
EA
rw |
Bits 0-3: endpoint/channel address Device mode Software must write in this field the 4-bit address used to identify the transactions directed to this endpoint. A value must be written before enabling the corresponding endpoint. Host mode Software must write in this field the 4-bit address used to identify the channel addressed by the host transaction..
Bits 4-5: Status bits, for transmission transfers Device mode These bits contain the information about the endpoint status, listed in . These bits can be toggled by the software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STTX bits to NAK, when a correct transfer has occurred (VTTX=1) corresponding to a IN or SETUP (control only) transaction addressed to this channel/endpoint. It then waits for the software to prepare the next set of data to be transmitted. Double-buffered bulk endpoints implement a special transaction flow control, which controls the status based on buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can only be 'VALID' or 'DISABLED'. Therefore, the hardware cannot change the status of the channel/endpoint/channel after a successful transaction. If the software sets the STTX bits to 'STALL' or 'NAK' for an Isochronous channel/endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode Same as STRX behaviour but for IN transactions (TBC).
Bit 6: Data Toggle, for transmission transfers If the endpoint/channel is non-isochronous, this bit contains the required value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be transmitted. Hardware toggles this bit when the ACK handshake is received from the USB host, following a data packet transmission. If the endpoint/channel is defined as a control one, hardware sets this bit to 1 at the reception of a SETUP PID addressed to this endpoint. If the endpoint/channel is using the double buffer feature, this bit is used to support packet buffer swapping too (Refer to ) If the endpoint/channel is Isochronous, this bit is used to support packet buffer swapping since no data toggling is used for this sort of endpoints and only DATA0 packet are transmitted (Refer to ). Hardware toggles this bit just after the end of data packet transmission, since no handshake is used for Isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint/channel is not a control one) or to force a specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGTX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can only be toggled by writing 1..
Bit 7: Valid USB transaction transmitted Device mode This bit is set by the hardware when an IN transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in the USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written. Host mode Same of VTRX behaviour but for USB OUT and SETUP transactions..
Bit 8: endpoint/channel kind The meaning of this bit depends on the endpoint/channel type configured by the EP_TYPE bits. summarizes the different meanings. DBL_BUF: This bit is set by the software to enable the double-buffering feature for this bulk endpoint. The usage of double-buffered bulk endpoints is explained in Double-buffered endpoints. STATUS_OUT: This bit is set by the software to indicate that a status out transaction is expected: in this case all OUT transactions containing more than zero data bytes are answered 'STALL' instead of 'ACK'. This bit may be used to improve the robustness of the application to protocol errors during control transfers and its usage is intended for control endpoints only. When STATUS_OUT is reset, OUT transactions can have any number of bytes, as required..
Bits 9-10: USB type of transaction These bits configure the behavior of this endpoint/channel as described in endpoint/channel type encoding on page2001. Channel0/Endpoint0 must always be a control endpoint/channel and each USB function must have at least one control endpoint/channel which has address 0, but there may be other control channels/endpoints if required. Only control channels/endpoints handle SETUP transactions, which are ignored by endpoints of other kinds. SETUP transactions cannot be answered with NAK or STALL. If a control endpoint/channel is defined as NAK, the USB peripheral will not answer, simulating a receive error, in the receive direction when a SETUP transaction is received. If the control endpoint/channel is defined as STALL in the receive direction, then the SETUP packet will be accepted anyway, transferring data and issuing the CTR interrupt. The reception of OUT transactions is handled in the normal way, even if the endpoint/channel is a control one. Bulk and interrupt endpoints have very similar behavior and they differ only in the special feature available using the EPKIND configuration bit. The usage of Isochronous channels/endpoints is explained in transfers.
Bit 11: Setup transaction completed Device mode This bit is read-only and it is set by the hardware when the last completed transaction is a SETUP. This bit changes its value only for control endpoints. It must be examined, in the case of a successful receive transaction (VTRX event), to determine the type of transaction occurred. To protect the interrupt service routine from the changes in SETUP bits due to next incoming tokens, this bit is kept frozen while VTRX bit is at 1; its state changes when VTRX is at 0. This bit is read-only. Host mode This bit is set by the software to send a SETUP transaction on a control endpoint. This bit changes its value only for control endpoints. It is cleared by hardware when the SETUP transaction is acknowledged and VTTX interrupt generated..
Bits 12-13: Status bits, for reception transfers Device mode These bits contain information about the endpoint status, which are listed in Reception status encoding on page2000.These bits can be toggled by software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STRX bits to NAK when a correct transfer has occurred (VTRX=1) corresponding to a OUT or SETUP (control only) transaction addressed to this endpoint, so the software has the time to elaborate the received data before it acknowledge a new transaction Double-buffered bulk endpoints implement a special transaction flow control, which control the status based upon buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can be only 'VALID' or 'DISABLED', so that the hardware cannot change the status of the endpoint after a successful transaction. If the software sets the STRX bits to 'STALL' or 'NAK' for an Isochronous endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode These bits are the host application controls to start, retry, or abort host transactions driven by the channel. These bits also contain information about the device answer to the last IN channel transaction and report the current status of the channel according to the following STRX table of states: - DISABLE DISABLE value is reported in case of ACK acknowledge is received on a single-buffer channel. When in DISABLE state the channel is unused or not active waiting for application to restart it by writing VALID. Application can reset a VALID channel to DISABLE to abort a transaction. In this case the transaction is immediately removed from the Host execution list. If the aborted transaction was already under execution it will be regularly terminated on the USB but the relative VTRX interrupt is not generated. - VALID An Host channel is actively trying to submit USB transaction to device only when in VALID state.VALID state can be set by software or automatically by hardware on a NAKED channel at the start of a new frame. When set to VALID, an host channel enters the host execution queue and waits permission from the Host Frame Schedure to submit its configured transaction. VALID value is also reported in case of ACK acknowledge is received on a double-buffered channel. In this case the channel remains active on the alternate buffer while application needs to read the current buffer and toggle DTOGTX. In case software is late in reading and the alternate buffer is not ready, the host channel is automatically suspended transparently to the application. The suspended double buffered channel will be re-activated as soon as delay is recovered and DTOGTX is toggled. - NAK NAK value is reported in case of NAK acknowledge received. When in NAK state the channel is suspended and does not try to transmit. NAK state is moved to VALID by hardware at the start of the next frame, or software can change it to immediately retry transmission by writing it to VALID, or can disable it and abort the transaction by writing DISABLE - STALL STALL value is reported in case of STALL acknowledge received. When in STALL state the channel behaves as disabled. Application should not retry transmission but reset the USB and re-enumerate..
Bit 14: Data Toggle, for reception transfers If the endpoint/channel is not Isochronous, this bit contains the expected value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be received. Hardware toggles this bit, when the ACK handshake is sent following a data packet reception having a matching data PID value; if the endpoint is defined as a control one, hardware clears this bit at the reception of a SETUP PID received from host (in device) or acknowledged by device (in host). If the endpoint/channel is using the double-buffering feature this bit is used to support packet buffer swapping too (Refer to ). If the endpoint/channel is Isochronous, this bit is used only to support packet buffer swapping for data transmission since no data toggling is used for this kind of channels/endpoints and only DATA0 packet are transmitted (Refer to Isochronous transfers). Hardware toggles this bit just after the end of data packet reception, since no handshake is used for isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint is not a control one) or to force specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGRX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can be only toggled by writing 1..
Bit 15: USB valid transaction received Device mode This bit is set by the hardware when an OUT/SETUP transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. The type of occurred transaction, OUT or SETUP, can be determined from the SETUP bit described below. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written, writing 1 has no effect. Host mode This bit is set by the hardware when an IN transaction is successfully completed on this channel. The software can only clear this bit. If the VTRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated. - A transaction ended with a NAK sets this bit and NAK answer is reported to application reading the NAK state from the STRX field of this register. One naked transaction keeps pending and is automatically retried by the Host at the next frame, or the Host can immediately retry by resetting STRX state to VALID. - A transaction ended by STALL handshake sets this bit and the STALL answer is reported to application reading the STALL state from the STRX field of this register. Host application should consequently disable the channel and re-enumerate. - A transaction ended with ACK handshake sets this bit If double buffering is disabled, ACK answer is reported by application reading the DISABLE state from the STRX field of this register. Host application should read received data from USBRAM and re-arm the channel by writing VALID to the STRX field of this register. If double buffering is enabled, ACK answer is reported by application reading VALID state from the STRX field of this register. Host application should read received data from USBRAM and toggle the DTOGTX bit of this register. This bit is read/write but only '0 can be written, writing 1 has no effect..
Bits 16-22: Host mode Device address assigned to the endpoint during the enumeration process..
Bit 23: Host mode This bit is set by the hardware when a device responds with a NAK. Software can be use this bit to monitoring the number of NAKs received from a device..
Bit 24: Low speed endpoint.
Bit 25: Transmit error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an OUT or SETUP transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
Bit 26: Receive error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an IN transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
USB endpoint/channel 7 register
Offset: 0x1c, size: 32, reset: 0x00000000, access: Unspecified
1/15 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERR_RX
rw |
ERR_TX
rw |
LS_EP
rw |
NAK
rw |
DEVADDR
rw |
|||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
VTRX
rw |
DTOGRX
w |
STATRX
w |
SETUP
r |
UTYPE
rw |
EPKIND
rw |
VTTX
rw |
DTOGTX
w |
STATTX
w |
EA
rw |
Bits 0-3: endpoint/channel address Device mode Software must write in this field the 4-bit address used to identify the transactions directed to this endpoint. A value must be written before enabling the corresponding endpoint. Host mode Software must write in this field the 4-bit address used to identify the channel addressed by the host transaction..
Bits 4-5: Status bits, for transmission transfers Device mode These bits contain the information about the endpoint status, listed in . These bits can be toggled by the software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STTX bits to NAK, when a correct transfer has occurred (VTTX=1) corresponding to a IN or SETUP (control only) transaction addressed to this channel/endpoint. It then waits for the software to prepare the next set of data to be transmitted. Double-buffered bulk endpoints implement a special transaction flow control, which controls the status based on buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can only be 'VALID' or 'DISABLED'. Therefore, the hardware cannot change the status of the channel/endpoint/channel after a successful transaction. If the software sets the STTX bits to 'STALL' or 'NAK' for an Isochronous channel/endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode Same as STRX behaviour but for IN transactions (TBC).
Bit 6: Data Toggle, for transmission transfers If the endpoint/channel is non-isochronous, this bit contains the required value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be transmitted. Hardware toggles this bit when the ACK handshake is received from the USB host, following a data packet transmission. If the endpoint/channel is defined as a control one, hardware sets this bit to 1 at the reception of a SETUP PID addressed to this endpoint. If the endpoint/channel is using the double buffer feature, this bit is used to support packet buffer swapping too (Refer to ) If the endpoint/channel is Isochronous, this bit is used to support packet buffer swapping since no data toggling is used for this sort of endpoints and only DATA0 packet are transmitted (Refer to ). Hardware toggles this bit just after the end of data packet transmission, since no handshake is used for Isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint/channel is not a control one) or to force a specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGTX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can only be toggled by writing 1..
Bit 7: Valid USB transaction transmitted Device mode This bit is set by the hardware when an IN transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in the USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written. Host mode Same of VTRX behaviour but for USB OUT and SETUP transactions..
Bit 8: endpoint/channel kind The meaning of this bit depends on the endpoint/channel type configured by the EP_TYPE bits. summarizes the different meanings. DBL_BUF: This bit is set by the software to enable the double-buffering feature for this bulk endpoint. The usage of double-buffered bulk endpoints is explained in Double-buffered endpoints. STATUS_OUT: This bit is set by the software to indicate that a status out transaction is expected: in this case all OUT transactions containing more than zero data bytes are answered 'STALL' instead of 'ACK'. This bit may be used to improve the robustness of the application to protocol errors during control transfers and its usage is intended for control endpoints only. When STATUS_OUT is reset, OUT transactions can have any number of bytes, as required..
Bits 9-10: USB type of transaction These bits configure the behavior of this endpoint/channel as described in endpoint/channel type encoding on page2001. Channel0/Endpoint0 must always be a control endpoint/channel and each USB function must have at least one control endpoint/channel which has address 0, but there may be other control channels/endpoints if required. Only control channels/endpoints handle SETUP transactions, which are ignored by endpoints of other kinds. SETUP transactions cannot be answered with NAK or STALL. If a control endpoint/channel is defined as NAK, the USB peripheral will not answer, simulating a receive error, in the receive direction when a SETUP transaction is received. If the control endpoint/channel is defined as STALL in the receive direction, then the SETUP packet will be accepted anyway, transferring data and issuing the CTR interrupt. The reception of OUT transactions is handled in the normal way, even if the endpoint/channel is a control one. Bulk and interrupt endpoints have very similar behavior and they differ only in the special feature available using the EPKIND configuration bit. The usage of Isochronous channels/endpoints is explained in transfers.
Bit 11: Setup transaction completed Device mode This bit is read-only and it is set by the hardware when the last completed transaction is a SETUP. This bit changes its value only for control endpoints. It must be examined, in the case of a successful receive transaction (VTRX event), to determine the type of transaction occurred. To protect the interrupt service routine from the changes in SETUP bits due to next incoming tokens, this bit is kept frozen while VTRX bit is at 1; its state changes when VTRX is at 0. This bit is read-only. Host mode This bit is set by the software to send a SETUP transaction on a control endpoint. This bit changes its value only for control endpoints. It is cleared by hardware when the SETUP transaction is acknowledged and VTTX interrupt generated..
Bits 12-13: Status bits, for reception transfers Device mode These bits contain information about the endpoint status, which are listed in Reception status encoding on page2000.These bits can be toggled by software to initialize their value. When the application software writes '0, the value remains unchanged, while writing '1 makes the bit value toggle. Hardware sets the STRX bits to NAK when a correct transfer has occurred (VTRX=1) corresponding to a OUT or SETUP (control only) transaction addressed to this endpoint, so the software has the time to elaborate the received data before it acknowledge a new transaction Double-buffered bulk endpoints implement a special transaction flow control, which control the status based upon buffer availability condition (Refer to endpoints). If the endpoint is defined as Isochronous, its status can be only 'VALID' or 'DISABLED', so that the hardware cannot change the status of the endpoint after a successful transaction. If the software sets the STRX bits to 'STALL' or 'NAK' for an Isochronous endpoint, the USB peripheral behavior is not defined. These bits are read/write but they can be only toggled by writing '1. Host mode These bits are the host application controls to start, retry, or abort host transactions driven by the channel. These bits also contain information about the device answer to the last IN channel transaction and report the current status of the channel according to the following STRX table of states: - DISABLE DISABLE value is reported in case of ACK acknowledge is received on a single-buffer channel. When in DISABLE state the channel is unused or not active waiting for application to restart it by writing VALID. Application can reset a VALID channel to DISABLE to abort a transaction. In this case the transaction is immediately removed from the Host execution list. If the aborted transaction was already under execution it will be regularly terminated on the USB but the relative VTRX interrupt is not generated. - VALID An Host channel is actively trying to submit USB transaction to device only when in VALID state.VALID state can be set by software or automatically by hardware on a NAKED channel at the start of a new frame. When set to VALID, an host channel enters the host execution queue and waits permission from the Host Frame Schedure to submit its configured transaction. VALID value is also reported in case of ACK acknowledge is received on a double-buffered channel. In this case the channel remains active on the alternate buffer while application needs to read the current buffer and toggle DTOGTX. In case software is late in reading and the alternate buffer is not ready, the host channel is automatically suspended transparently to the application. The suspended double buffered channel will be re-activated as soon as delay is recovered and DTOGTX is toggled. - NAK NAK value is reported in case of NAK acknowledge received. When in NAK state the channel is suspended and does not try to transmit. NAK state is moved to VALID by hardware at the start of the next frame, or software can change it to immediately retry transmission by writing it to VALID, or can disable it and abort the transaction by writing DISABLE - STALL STALL value is reported in case of STALL acknowledge received. When in STALL state the channel behaves as disabled. Application should not retry transmission but reset the USB and re-enumerate..
Bit 14: Data Toggle, for reception transfers If the endpoint/channel is not Isochronous, this bit contains the expected value of the data toggle bit (0=DATA0, 1=DATA1) for the next data packet to be received. Hardware toggles this bit, when the ACK handshake is sent following a data packet reception having a matching data PID value; if the endpoint is defined as a control one, hardware clears this bit at the reception of a SETUP PID received from host (in device) or acknowledged by device (in host). If the endpoint/channel is using the double-buffering feature this bit is used to support packet buffer swapping too (Refer to ). If the endpoint/channel is Isochronous, this bit is used only to support packet buffer swapping for data transmission since no data toggling is used for this kind of channels/endpoints and only DATA0 packet are transmitted (Refer to Isochronous transfers). Hardware toggles this bit just after the end of data packet reception, since no handshake is used for isochronous transfers. This bit can also be toggled by the software to initialize its value (mandatory when the endpoint is not a control one) or to force specific data toggle/packet buffer usage. When the application software writes '0, the value of DTOGRX remains unchanged, while writing '1 makes the bit value toggle. This bit is read/write but it can be only toggled by writing 1..
Bit 15: USB valid transaction received Device mode This bit is set by the hardware when an OUT/SETUP transaction is successfully completed on this endpoint; the software can only clear this bit. If the CTRM bit in USB_CNTR register is set accordingly, a generic interrupt condition is generated together with the endpoint related interrupt condition, which is always activated. The type of occurred transaction, OUT or SETUP, can be determined from the SETUP bit described below. A transaction ended with a NAK or STALL handshake does not set this bit, since no data is actually transferred, as in the case of protocol errors or data toggle mismatches. This bit is read/write but only '0 can be written, writing 1 has no effect. Host mode This bit is set by the hardware when an IN transaction is successfully completed on this channel. The software can only clear this bit. If the VTRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated. - A transaction ended with a NAK sets this bit and NAK answer is reported to application reading the NAK state from the STRX field of this register. One naked transaction keeps pending and is automatically retried by the Host at the next frame, or the Host can immediately retry by resetting STRX state to VALID. - A transaction ended by STALL handshake sets this bit and the STALL answer is reported to application reading the STALL state from the STRX field of this register. Host application should consequently disable the channel and re-enumerate. - A transaction ended with ACK handshake sets this bit If double buffering is disabled, ACK answer is reported by application reading the DISABLE state from the STRX field of this register. Host application should read received data from USBRAM and re-arm the channel by writing VALID to the STRX field of this register. If double buffering is enabled, ACK answer is reported by application reading VALID state from the STRX field of this register. Host application should read received data from USBRAM and toggle the DTOGTX bit of this register. This bit is read/write but only '0 can be written, writing 1 has no effect..
Bits 16-22: Host mode Device address assigned to the endpoint during the enumeration process..
Bit 23: Host mode This bit is set by the hardware when a device responds with a NAK. Software can be use this bit to monitoring the number of NAKs received from a device..
Bit 24: Low speed endpoint.
Bit 25: Transmit error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an OUT or SETUP transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
Bit 26: Receive error Host mode This bit is set by the hardware when an error (e.g. no answer by the device, CRC error, bit stuffing error, framing format violation, etc.) has occurred during an IN transaction on this channel. The software can only clear this bit. If the ERRM bit in USB_CNTR register is set a generic interrupt condition is generated together with the channel related flag, which is always activated..
USB control register
Offset: 0x40, size: 32, reset: 0x00000003, access: Unspecified
4/17 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
HOST
rw |
THR512M
rw |
||||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTRM
rw |
PMAOVRM
rw |
ERRM
rw |
WKUPM
rw |
SUSPM
rw |
RESETM
rw |
SOFM
rw |
ESOFM
rw |
L1REQM
rw |
L1RESUME
rw |
L2RESUME
rw |
SUSPEN
rw |
SUSPRDY
r |
PDWN
rw |
USBRST
rw |
Bit 0: USB Reset Device mode Software can set this bit to reset the USB core, exactly as it happens when receiving a RESET signaling on the USB.The USB peripheral, in response to a RESET, resets its internal protocol state machine. Reception and transmission are disabled until the RESET bit is cleared. All configuration registers do not reset: the microcontroller must explicitly clear these registers (this is to ensure that the RESET interrupt can be safely delivered, and any transaction immediately followed by a RESET can be completed). The function address and endpoint registers are reset by an USB reset event. Host mode Software sets this bit to drive USB reset state on the bus and initialize the device. USB reset terminates as soon as this bit is cleared by software..
Allowed values:
0: NoEffect: No effect
1: Reset: USB core is under reset / USB reset driven
Bit 1: Power down This bit is used to completely switch off all USB-related analog parts if it is required to completely disable the USB peripheral for any reason. When this bit is set, the USB peripheral is disconnected from the transceivers and it cannot be used..
Bit 2: Suspend state effective This bit is set by hardware as soon as the suspend state entered through the SUSPEN control gets internally effective. In this state USB activity is suspended, USB clock is gated, transceiver is set in low power mode by disabling the differential receiver. Only asynchronous wakeup logic and single ended receiver is kept alive to detect remote wakeup or resume events. Software must poll this bit to confirm it to be set before any STOP mode entry. This bit is cleared by hardware simultaneously to the WAKEUP flag being set..
Bit 3: Suspend state enable Device mode Software can set this bit when the SUSP interrupt is received, which is issued when no traffic is received by the USB peripheral for 3ms. Software can also set this bit when the L1REQ interrupt is received with positive acknowledge sent. As soon as the suspend state is propagated internally all device activity is stopped, USB clock is gated, USB transceiver is set into low power mode and the SUSPRDY bit is set by hardware. In the case that device application wants to purse more aggressive power saving by stopping the USB clock source and by moving the microcontroller to stop mode, as in the case of bus powered device application, it must first wait few cycles to see the SUSPRDY=1 acknowledge the suspend request. This bit is cleared by hardware simultaneous with the WAKEUP flag set. Host mode Software can set this bit when Host application has nothing scheduled for the next frames and wants to enter long term power saving. When set, it stops immediately SOF generation and any other host activity, gates the USB clock and sets the transceiver in low power mode. If any USB transaction is on-going at the time SUSPEN is set, suspend is entered at the end of the current transaction. As soon as suspend state is propagated internally and gets effective the SUSPRDY bit is set. In the case that host application wants to purse more aggressive power saving by stopping the USB clock source and by moving the micro-controller to STOP mode, it must first wait few cycles to see SUSPRDY=1 acknowledge to the suspend request. This bit is cleared by hardware simultaneous with the WAKEUP flag set..
Allowed values:
0: NoEffect: No effect
1: Suspend: Enter L1/L2 suspend
Bit 4: L2 Remote Wakeup / Resume driver Device mode The microcontroller can set this bit to send remote wake-up signaling to the Host. It must be activated, according to USB specifications, for no less than 1ms and no more than 15ms after which the Host PC is ready to drive the resume sequence up to its end. Host mode Software sets this bit to send resume signaling to the device. Software clears this bit to send end of resume to device and restart SOF generation. In the context of remote wake up, this bit is to be set following the WAKEUP interrupt..
Bit 5: L1 Remote Wakeup / Resume driver Device mode Software sets this bit to send a LPM L1 50us remote wakeup signaling to the host. After the signaling ends, this bit is cleared by hardware. Host mode Software sets this bit to send L1 resume signaling to device. Resume duration and next SOF generation is automatically driven to set the restart of USB activity timely aligned with the programmed BESL value. In the context of remote wake up, this bit is to be set following the WAKEUP interrupt. This bit is cleared by hardware at the end of resume..
Allowed values:
0: NoEffect: No effect
1: WakeupResume: Send 50us remote-wakeup signaling to host / Send L1 resume signaling to device
Bit 7: LPM L1 state request interrupt mask.
Bit 8: Expected start of frame interrupt mask.
Bit 9: Start of frame interrupt mask.
Bit 10: USB reset interrupt mask.
Bit 11: Suspend mode interrupt mask.
Bit 12: Wakeup interrupt mask.
Bit 13: Error interrupt mask.
Bit 14: Packet memory area over / underrun interrupt mask.
Bit 15: Correct transfer interrupt mask.
Bit 16: 512 byte threshold interrupt mask.
Bit 31: HOST mode HOST bit selects betweens Host or Device USB mode of operation. It must be set before enabling the USB peripheral by the function enable bit..
USB interrupt status register
Offset: 0x44, size: 32, reset: 0x00000000, access: Unspecified
5/14 fields covered.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LS_DCON
r |
DCON_STAT
r |
THR512
rw |
|||||||||||||
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
CTR
r |
PMAOVR
rw |
ERR
rw |
WKUP
rw |
SUSP
rw |
RST_DCON
rw |
SOF
rw |
ESOF
rw |
L1REQ
rw |
DIR
r |
IDN
r |
Bits 0-3: Device Endpoint / Host channel identification number These bits are written by the hardware according to the host channel or device endpoint number, which generated the interrupt request. If several endpoint/channel transactions are pending, the hardware writes the identification number related to the endpoint/channel having the highest priority defined in the following way: Two levels are defined, in order of priority: Isochronous and double-buffered bulk channels/endpoints are considered first and then the others are examined. If more than one endpoint/channel from the same set is requesting an interrupt, the IDN bits in USB_ISTR register are assigned according to the lowest requesting register, CHEP0R having the highest priority followed by CHEP1R and so on. The application software can assign a register to each endpoint/channel according to this priority scheme, so as to order the concurring endpoint/channel requests in a suitable way. These bits are read only..
Bit 4: Direction of transaction This bit is written by the hardware according to the direction of the successful transaction, which generated the interrupt request. If DIR bit=0, VTTX bit is set in the USB_EPnR register related to the interrupting endpoint. The interrupting transaction is of IN type (data transmitted by the USB peripheral to the host PC). If DIR bit=1, VTRX bit or both VTTX/VTRX are set in the USB_EPnR register related to the interrupting endpoint. The interrupting transaction is of OUT type (data received by the USB peripheral from the host PC) or two pending transactions are waiting to be processed. This information can be used by the application software to access the USB_EPnR bits related to the triggering transaction since it represents the direction having the interrupt pending. This bit is read-only..
Bit 7: LPM L1 state request This bit is set by the hardware when LPM command to enter the L1 state is successfully received and acknowledged. This bit is read/write but only '0 can be written and writing '1 has no effect..
Bit 8: Expected start of frame This bit is set by the hardware when an SOF packet is expected but not received. The host sends an SOF packet each 1ms, but if the device does not receive it properly, the Suspend Timer issues this interrupt. If three consecutive ESOF interrupts are generated (i.e. three SOF packets are lost) without any traffic occurring in between, a SUSP interrupt is generated. This bit is set even when the missing SOF packets occur while the Suspend Timer is not yet locked. This bit is read/write but only '0 can be written and writing '1 has no effect..
Bit 9: Start of frame This bit signals the beginning of a new USB frame and it is set when a SOF packet arrives through the USB bus. The interrupt service routine may monitor the SOF events to have a 1ms synchronization event to the USB host and to safely read the USB_FNR register which is updated at the SOF packet reception (this could be useful for isochronous applications). This bit is read/write but only '0 can be written and writing '1 has no effect..
Bit 10: USB reset request Device mode This bit is set by hardware when an USB reset is released by the host and the bus returns to idle. USB reset state is internally detected after the sampling of 60 consecutive SE0 cycles. Host mode This bit is set by hardware when device connection or device disconnection is detected. Device connection is signaled after J state is sampled for 22cycles consecutively from unconnected state. Device disconnection is signaled after SE0 state is sampled for 22cycles consecutively from connected state..
Bit 11: Suspend mode request This bit is set by the hardware when no traffic has been received for 3ms, indicating a suspend mode request from the USB bus. The suspend condition check is enabled immediately after any USB reset and it is disabled by the hardware when the suspend mode is active (SUSPEN=1) until the end of resume sequence. This bit is read/write but only '0 can be written and writing '1 has no effect..
Bit 12: Wakeup This bit is set to 1 by the hardware when, during suspend mode, activity is detected that wakes up the USB peripheral. This event asynchronously clears the LP_MODE bit in the CTLR register and activates the USB_WAKEUP line, which can be used to notify the rest of the device (e.g. wakeup unit) about the start of the resume process. This bit is read/write but only '0 can be written and writing '1 has no effect..
Bit 13: Error This flag is set whenever one of the errors listed below has occurred: NANS: No ANSwer. The timeout for a host response has expired. CRC: Cyclic Redundancy Check error. One of the received CRCs, either in the token or in the data, was wrong. BST: Bit Stuffing error. A bit stuffing error was detected anywhere in the PID, data, and/or CRC. FVIO: Framing format Violation. A non-standard frame was received (EOP not in the right place, wrong token sequence, etc.). The USB software can usually ignore errors, since the USB peripheral and the PC host manage retransmission in case of errors in a fully transparent way. This interrupt can be useful during the software development phase, or to monitor the quality of transmission over the USB bus, to flag possible problems to the user (e.g. loose connector, too noisy environment, broken conductor in the USB cable and so on). This bit is read/write but only '0 can be written and writing '1 has no effect..
Bit 14: Packet memory area over / underrun This bit is set if the microcontroller has not been able to respond in time to an USB memory request. The USB peripheral handles this event in the following way: During reception an ACK handshake packet is not sent, during transmission a bit-stuff error is forced on the transmitted stream; in both cases the host will retry the transaction. The PMAOVR interrupt should never occur during normal operations. Since the failed transaction is retried by the host, the application software has the chance to speed-up device operations during this interrupt handling, to be ready for the next transaction retry; however this does not happen during Isochronous transfers (no isochronous transaction is anyway retried) leading to a loss of data in this case. This bit is read/write but only '0 can be written and writing '1 has no effect..
Bit 15: Correct transfer This bit is set by the hardware to indicate that an endpoint/channel has successfully completed a transaction; using DIR and EP_ID bits software can determine which endpoint/channel requested the interrupt. This bit is read-only..
Bit 16: 512 byte threshold interrupt This bit is set to 1 by the hardware when 512 bytes have been transmitted or received during isochronous transfers. This bit is read/write but only 0 can be written and writing 1 has no effect. Note that no information is available to indicate the associated channel/endpoint, however in practice only one ISO endpoint/channel with such large packets can be supported, so that channel..
Bit 29: Device connection status Host mode: This bit contains information about device connection status. It is set by hardware when a LS/FS device is attached to the host while it is reset when the device is disconnected..
Bit 30: Low Speed device connected Host mode: This bit is set by hardware when an LS device connection is detected. Device connection is signaled after LS J-state is sampled for 22 consecutive cycles of the USB clock (48 MHz) from the unconnected state..
USB frame number register
Offset: 0x48, size: 32, reset: 0x00000000, access: Unspecified
5/5 fields covered.
Bits 0-10: Frame number This bit field contains the 11-bits frame number contained in the last received SOF packet. The frame number is incremented for every frame sent by the host and it is useful for Isochronous transfers. This bit field is updated on the generation of an SOF interrupt..
Bits 11-12: Lost SOF Device mode These bits are written by the hardware when an ESOF interrupt is generated, counting the number of consecutive SOF packets lost. At the reception of an SOF packet, these bits are cleared..
Bit 13: Locked Device mode This bit is set by the hardware when at least two consecutive SOF packets have been received after the end of an USB reset condition or after the end of an USB resume sequence. Once locked, the frame timer remains in this state until an USB reset or USB suspend event occurs..
Bit 14: Receive data - line status This bit can be used to observe the status of received data minus upstream port data line. It can be used during end-of-suspend routines to help determining the wakeup event..
Bit 15: Receive data + line status This bit can be used to observe the status of received data plus upstream port data line. It can be used during end-of-suspend routines to help determining the wakeup event..
USB device address
Offset: 0x4c, size: 32, reset: 0x00000000, access: Unspecified
0/2 fields covered.
Bits 0-6: Device address Device mode These bits contain the USB function address assigned by the host PC during the enumeration process. Both this field and the endpoint/channel Address (EA) field in the associated USB_EPnR register must match with the information contained in a USB token in order to handle a transaction to the required endpoint. Host mode These bits contain the address transmitted with the LPM transaction.
Bit 7: Enable function This bit is set by the software to enable the USB device. The address of this device is contained in the following ADD[6:0] bits. If this bit is at '0 no transactions are handled, irrespective of the settings of USB_EPnR registers..
LPM control and status register
Offset: 0x54, size: 32, reset: 0x00000000, access: Unspecified
3/4 fields covered.
Bit 0: LPM support enable Device mode This bit is set by the software to enable the LPM support within the USB device. If this bit is at '0 no LPM transactions are handled. Host mode Software sets this bit to transmit an LPM transaction to device. This bit is cleared by hardware, simultaneous with L1REQ flag set, when device answer is received.
Bit 1: LPM Token acknowledge enable The NYET/ACK will be returned only on a successful LPM transaction: No errors in both the EXT token and the LPM token (else ERROR) A valid bLinkState = 0001B (L1) is received (else STALL) This bit contains the device answer to the LPM transaction. It mast be evaluated following the L1REQ interrupt..
Allowed values:
0: Nyet: The valid LPM Token will be NYET / NYET answer
1: Ack: The valid LPM Token will be ACK / ACK answer
Bit 3: bRemoteWake value Device mode This bit contains the bRemoteWake value received with last ACKed LPM Token Host mode This bit contains the bRemoteWake value transmitted with the LPM transaction.
Bits 4-7: BESL value Device mode These bits contain the BESL value received with last ACKed LPM Token Host mode These bits contain the BESL value transmitted with the LPM transaction.
Battery charging detector
Offset: 0x58, size: 32, reset: 0x00000000, access: Unspecified
4/9 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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DPPU_DPD
rw |
PS2DET
r |
SDET
r |
PDET
r |
DCDET
r |
SDEN
rw |
PDEN
rw |
DCDEN
rw |
BCDEN
rw |
Bit 0: Battery charging detector (BCD) enable Device mode This bit is set by the software to enable the BCD support within the USB device. When enabled, the USB PHY is fully controlled by BCD and cannot be used for normal communication. Once the BCD discovery is finished, the BCD should be placed in OFF mode by clearing this bit to '0 in order to allow the normal USB operation..
Bit 1: Data contact detection (DCD) mode enable Device mode This bit is set by the software to put the BCD into DCD mode. Only one detection mode (DCD, PD, SD or OFF) should be selected to work correctly..
Bit 2: Primary detection (PD) mode enable Device mode This bit is set by the software to put the BCD into PD mode. Only one detection mode (DCD, PD, SD or OFF) should be selected to work correctly..
Bit 3: Secondary detection (SD) mode enable Device mode This bit is set by the software to put the BCD into SD mode. Only one detection mode (DCD, PD, SD or OFF) should be selected to work correctly..
Bit 4: Data contact detection (DCD) status Device mode This bit gives the result of DCD..
Bit 5: Primary detection (PD) status Device mode This bit gives the result of PD..
Bit 6: Secondary detection (SD) status Device mode This bit gives the result of SD..
Bit 7: DM pull-up detection status Device mode This bit is active only during PD and gives the result of comparison between DM voltage level and VLGC threshold. In normal situation, the DM level should be below this threshold. If it is above, it means that the DM is externally pulled high. This can be caused by connection to a PS2 port (which pulls-up both DP and DM lines) or to some proprietary charger not following the BCD specification..
Bit 15: DP pull-up / DPDM pull-down Device mode This bit is set by software to enable the embedded pull-up on DP line. Clearing it to '0 can be used to signal disconnect to the host when needed by the user software. Host mode This bit is set by software to enable the embedded pull-down on DP and DM lines..
0x40010030: System configuration controller
1/5 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
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0x0 | CSR | ||||||||||||||||||||||||||||||||
0x4 | CCR |
VREFBUF control and status register
Offset: 0x0, size: 32, reset: 0x00000002, access: Unspecified
1/4 fields covered.
Bit 0: Voltage reference buffer mode enable This bit is used to enable the voltage reference buffer mode..
Bit 1: High impedance mode This bit controls the analog switch to connect or not the VREF+ pin. Refer to for the mode descriptions depending on ENVR bit configuration..
Bit 2: Voltage reference scale This bit selects the value generated by the voltage reference buffer..
Bit 3: Voltage reference buffer ready.
VREFBUF calibration control register
Offset: 0x4, size: 32, reset: 0x00000000, access: read-write
0/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TRIM
rw |
0x40002c00: System window watchdog
6/6 fields covered.
Offset | Name | 31 |
30 |
29 |
28 |
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
12 |
11 |
10 |
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
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0x0 | CR | ||||||||||||||||||||||||||||||||
0x4 | CFR | ||||||||||||||||||||||||||||||||
0x8 | SR |
Control register
Offset: 0x0, size: 32, reset: 0x0000007F, access: read-write
2/2 fields covered.
Bits 0-6: 7-bit counter (MSB to LSB) These bits contain the value of the watchdog counter, decremented every (4096 x 2WDGTB[1:0]) PCLK cycles. A reset is produced when it is decremented from 0x40 to 0x3F (T6 becomes cleared)..
Allowed values: 0x0-0x7f
Bit 7: Activation bit This bit is set by software and only cleared by hardware after a reset. When WDGA=1, the watchdog can generate a reset..
Allowed values:
0: Disabled: Watchdog disabled
1: Enabled: Watchdog enabled
Configuration register
Offset: 0x4, size: 32, reset: 0x0000007F, access: read-write
3/3 fields covered.
Bits 0-6: 7-bit window value These bits contain the window value to be compared with the down-counter..
Allowed values: 0x0-0x7f
Bit 9: Early wakeup interrupt When set, an interrupt occurs whenever the counter reaches the value 0x40. This interrupt is only cleared by hardware after a reset..
Allowed values:
1: Enable: interrupt occurs whenever the counter reaches the value 0x40
Bits 11-13: Timer base The timebase of the prescaler can be modified as follows:.
Allowed values:
0: Div1: Counter clock (PCLK1 div 4096) div 1
1: Div2: Counter clock (PCLK1 div 4096) div 2
2: Div4: Counter clock (PCLK1 div 4096) div 4
3: Div8: Counter clock (PCLK1 div 4096) div 8
4: Div16: Counter clock (PCLK1 div 4096) div 16
5: Div32: Counter clock (PCLK1 div 4096) div 32
6: Div64: Counter clock (PCLK1 div 4096) div 64
7: Div128: Counter clock (PCLK1 div 4096) div 128
Status register
Offset: 0x8, size: 32, reset: 0x00000000, access: read-write
1/1 fields covered.
15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
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EWIF
rw |