24.6.2.5.1 Asynchronous Path

When using the asynchronous path, the events are propagated from the event generator to the event user without intervention from the Event System. The GCLK for this channel (GCLK_EVSYS_CHANNEL_n) is not mandatory, meaning that an event will be propagated to the user without any clock latency.

When the asynchronous path is selected, the channel cannot generate any interrupts, and the Channel Status register (CHSTATUS) is always zero. No edge detection is available; this must be handled in the event user. When the event generator and the event user share the same generic clock, using the asynchronous path will propagate the event with the least amount of latency.