Capture/Compare Channels; Figure 194. Capture/Compare Channel (Example: Channel 1 Input Stage) - ST STM32F423 Reference Manual

RM0430
19.3.4

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).
Figure 194
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).

Figure 194. Capture/compare channel (example: channel 1 input stage)

The output stage generates an intermediate waveform which is then used for reference:
OCxRef (active high). The polarity acts at the end of the chain.
to Figure 196 give an overview of one capture/compare channel.
RM0430 Rev 8
General-purpose timers (TIM9 to TIM14)
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