Timx Capture/Compare Enable Register (Timx_Ccer) - ST STM32F40 Series Reference Manual

RM0090
Input capture mode
Bits 15:12 IC4F: Input capture 4 filter
Bits 11:10 IC4PSC: Input capture 4 prescaler
Bits 9:8 CC4S: Capture/Compare 4 selection
Note: CC4S bits are writable only when the channel is OFF (CC4E = 0 in TIMx_CCER).
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).
15.4.9

TIMx capture/compare enable register (TIMx_CCER)

Address offset: 0x20
Reset value: 0x0000
15 14 13
CC4NP CC4P CC4E
Res.
rw rw
Bit 15 CC4NP: Capture/Compare 4 output Polarity.
Bit 14
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
Bit 9 CC3P: Capture/Compare 3 output Polarity.
Bit 8 CC3E: Capture/Compare 3 output enable.
This bit-field defines the direction of the channel (input/output) as well as the used input.
00: CC4 channel is configured as output
01: CC4 channel is configured as input, IC4 is mapped on TI4
10: CC4 channel is configured as input, IC4 is mapped on TI3
11: CC4 channel is configured as input, IC4 is mapped on TRC. This mode is working only if
an internal trigger input is selected through TS bit (TIMx_SMCR register)
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 CC3P
Res.
rw rw rw
Refer to CC1NP description
Reserved, must be kept at reset value.
refer to CC1P description
refer to CC1E description
refer to CC1NP description
Reserved, must be kept at reset value.
refer to CC1P description
refer to CC1E description
Doc ID 018909 Rev 4
General-purpose timers (TIM2 to TIM5)
8 7 6 5
CC3E CC2NP CC2P
Res.
rw rw rw
4 3 2 1
CC2E CC1NP CC1P
Res.
rw rw rw
0
CC1E
rw
472/1422