PWM1

When you configure P1 for peripheral operation by setting the value to 1, it outputs a 50% duty cycle PWM with a clock rate of 32,787 Hz, which is a period of 30.5µs. The PWM output provides a clock for the PLUS processor, although it may also be used for other purposes.

When you enable this feature, the RSSI PWM output is automatically disabled, even if it is configured.