RM0365 Datasheet, PDF (564/1076 Pages) STMicroelectronics – This reference manual targets application developers

RM0365
General-purpose timers (TIM2/TIM3/TIM4)
Figure 212. Control circuit in external clock mode 2
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21.3.4
069
Capture/compare channels
Each Capture/Compare channel is built around a capture/compare register (including a
shadow register), a input stage for capture (with digital filter, multiplexing and prescaler) and
an output stage (with comparator and output control).
The following figure gives an overview of one Capture/Compare channel.
The input stage samples the corresponding TIx input to generate a filtered signal TIxF.
Then, an edge detector with polarity selection generates a signal (TIxFPx) which can be
used as trigger input by the slave mode controller or as the capture command. It is
prescaled before the capture register (ICxPS).
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