15.2.3.2 I/O Lines

The EVSYS can output three event channels asynchronously on pins. The output signals are called EVOUT[2:0].

1. Configure which event channel (one of SYNCCH[1:0] or ASYNCCH[3:0]) is output on which EVOUTn bit by writing to EVSYS.ASYNCUSER10, EVSYS.ASYNCUSER9, or EVSYS.ASYNCUSER8, respectively.
2. Optional: configure the pin properties using the port peripheral.
3. Enable the pin output by writing '1' to the respective EVOUTn bit in the Control A register of the PORTMUX peripheral (PORTMUX.CTRLA).