24.3.4 Port Override
The Port Override logic is common for all the timer/counter extensions. If a bit in the Output Override Enable (WEXn.OUTOVEN) register is set, it takes control of the corresponding pin, overriding the output from any source generating before that. Any alternative pin function can use the corresponding I/O pin when not set. For details, refer to Output Override Enable (WEXn.OUTOVEN) register.