STMicroelectronics STM32WLEx Reference Manual page 696

Advanced-control timer (TIM1)
Bits 31:25 Reserved, must be kept at reset value.
Bits 23:17 Reserved, must be kept at reset value.
Bit 15 OC4CE: Output compare 4 clear enable
Refer to OC1CE description.
Bits 24, 14:12 OC4M[3:0]: Output compare 4 mode
Refer to OC3M[3:0] description.
Bit 11 OC4PE: Output compare 4 preload enable
Refer to OC1PE description.
Bit 10 OC4FE: Output compare 4 fast enable
Refer to OC1FE description.
Bits 9:8 CC4S[1:0]: Capture/Compare 4 selection
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)
Note: CC4S bits are writable only when the channel is OFF (CC4E = '0' in TIMx_CCER).
Bit 7 OC3CE: Output compare 3 clear enable
Refer to OC1CE description.
Bits 16, 6:4 OC3M[3:0]: Output compare 3 mode
Refer to OC1M[3:0] description.
Bit 3 OC3PE: Output compare 3 preload enable
Refer to OC1PE description.
Bit 2 OC3FE: Output compare 3 fast enable
Refer to OC1FE description.
Bits 1:0 CC3S[1:0]: Capture/Compare 3 selection
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)
Note: CC3S bits are writable only when the channel is OFF (CC3E = '0' in TIMx_CCER).
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