The Enhanced PWM Steering can control when the PWM signal will update via the Synchronization settings.
The STRxSYNC bit of the PSTRxCON register provides the user two options for when the steering event will occur.
When the STRxSYNC bit is ‘0’, the steering event will happen at the end of the instruction that writes to the PSTRxCON register. In this case the output signal at the Px<D:A> pins may be an incomplete PWM waveform. This operation is useful when the user firmware needs to immediately remove a PWM signal from the pin.
When the STRxSYNC bit is ‘1’, the effective steering update will happen at the beginning of the next PWM period. In this case steering ON/OFF of the PWM output will always produce a complete PWM waveform.
PSTRxCON: PWM Steering Control Register
|bit 7||bit 0|
STRxSYNC: Steering Sync bit
1 = Output steering update occurs on next PWM period
0 = Output steering update occurs at the beginning of the instruction cycle boundary