22.3.2.4.3 Asynchronous Event Detection

To enable asynchronous Event detection on an input Event, write a '1' to the Asynchronous Event Control bit (ASYNC) in the Event Control register (TCD.EVCTRLx).

The Asynchronous Event Detection makes it possible to asynchronously override the output when the input Event occurs. What the Input event will do is depending on Input Mode for the event input. The outputs have direct override while the counter flow will be changed when the event is synchronized to the Synchronization clock.

It is not possible to use both asynchronous Event detection and digital filtering at the same time.