Advanced-control timers (TIM1/TIM8/TIM20) RM0440
1196/2126 RM0440 Rev 4
Bits 24, 14:12 OC4M[3:0]: Output compare 4 mode
Refer to OC3M[3:0] bit description
Bit 11 OC4PE: Output compare 4 preload enable
Bit 10 OC4FE: Output compare 4 fast enable
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, tim_ic4 is mapped on tim_ti4
10: CC4 channel is configured as input, tim_ic4 is mapped on tim_ti3
11: CC4 channel is configured as input, tim_ic4 is mapped on tim_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