Timx Capture/Compare Enable Register (Timx_Ccer) - STMicroelectronics RM0365 Reference Manual

General-purpose timers (TIM2/TIM3/TIM4)
Bits 7:4 IC3F: Input capture 3 filter
Bits 3:2 IC3PSC: Input capture 3 prescaler
Bits 1:0 CC3S: Capture/Compare 3 selection
Note: CC3S bits are writable only when the channel is OFF (CC3E = 0 in TIMx_CCER).
21.4.9

TIMx capture/compare enable register (TIMx_CCER)

Address offset: 0x20
Reset value: 0x0000
15 14 13
CC4NP Res. CC4P CC4E
rw rw
Bit 15 CC4NP: Capture/Compare 4 output Polarity.
Bit 14 Reserved, must be kept at reset value.
Bit 13 CC4P: Capture/Compare 4 output Polarity.
Bit 12 CC4E: Capture/Compare 4 output enable.
Bit 11 CC3NP: Capture/Compare 3 output Polarity.
Bit 10 Reserved, must be kept at reset value.
Bit 9 CC3P: Capture/Compare 3 output Polarity.
Bit 8 CC3E: Capture/Compare 3 output enable.
Bit 7 CC2NP: Capture/Compare 2 output Polarity.
Bit 6 Reserved, must be kept at reset value.
Bit 5 CC2P: Capture/Compare 2 output Polarity.
Bit 4 CC2E: Capture/Compare 2 output enable.
Bit 3 CC1NP: Capture/Compare 1 output Polarity.
611/1080
This bit-field defines the direction of the channel (input/output) as well as the used input.
00: CC3 channel is configured as output
01: CC3 channel is configured as input, IC3 is mapped on TI3
10: CC3 channel is configured as input, IC3 is mapped on TI4
11: CC3 channel is configured as input, IC3 is mapped on TRC. This mode is working only if
an internal trigger input is selected through TS bit (TIMx_SMCR register)
12 11 10 9
CC3NP Res. CC3P
rw rw rw
Refer to CC1NP description
Refer to CC1P description
refer to CC1E description
Refer to CC1NP description
Refer to CC1P description
Refer to CC1E description
Refer to CC1NP description
refer to CC1P description
Refer to CC1E description
CC1 channel configured as output: CC1NP must be kept cleared in this case.
CC1 channel configured as input: This bit is used in conjunction with CC1P to define
TI1FP1/TI2FP1 polarity. refer to CC1P description.
8 7 6
CC3E CC2NP Res.
rw rw
DocID025202 Rev 7
5 4 3 2
CC2P CC2E CC1NP Res.
rw rw rw
RM0365
1 0
CC1P CC1E
rw rw