Espressif ESP32 Technical Reference Manual page 420

16 Motor Control PWM (PWM)
• Synchronize the PWM timers with each other. Either hardware or software synchronization may be used.
• Configure the source of the PWM timer's the synchronization input to one of the seven sources below:
– The three PWM timer's synchronization outputs.
– Three synchronization signals from the GPIO matrix: SYNC0, SYNC1, SYNC2.
– No synchronization input signal selected
• Configure the source of the PWM timer's synchronization output to one of the four sources below:
– Synchronization input signal
– Event generated when value of the PWM timer is equal to zero
– Event generated when value of the PWM timer is equal to period
– No synchronization output generated
• Configure the method of period updating.
16.3.1.3 Operator Submodule
The configuration parameters of the operator submodule are shown in Table 16-1.
Espressif Systems
Figure 16-4. Operator Submodule
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ESP32 TRM (Version 5.2)