Figure 126. Capture/Compare Channel 1 Main Circuit; Figure 127. Output Stage Of Capture/Compare Channel (Channel 1) - ST STM32F101 series Reference Manual

Advanced arm-based 32-bit mcus

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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.

The capture/compare block is made of one preload register and one shadow register. Write

and read always access the preload register.

In capture mode, captures are actually done in the shadow register, which is copied into the

preload register.

In compare mode, the content of the preload register is copied into the shadow register

which is compared to the counter.

Figure 126. Capture/compare channel 1 main circuit

read_in_progress

Capture/Compare Preload Register

capture_transfer

Capture/Compare Shadow Register

DocID13902 Rev 15

General-purpose timers (TIM2 to TIM5)

MCU-peripheral interface

compare_transfer

write_in_progress

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