Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 555
SAM9G20
EEVTEDG: External Event Edge Selection
EEVT: External Event Selection
Note 1: If TIOB is chosen as the external event signal, it is configured as an input and no longer generates waveforms and subse-
quently no IRQs.
ENETRG: External Event Trigger Enable
0: The external event has no effect on the counter and its clock. In this case, the selected external event only controls the TIOA output.
1: The external event resets the counter and starts the counter clock.
WAVSEL: Waveform Selection
WAVE
0: Waveform Mode is disabled (Capture Mode is enabled).
1: Waveform Mode is enabled.
ACPA: RA Compare Effect on TIOA
ACPC: RC Compare Effect on TIOA
EEVTEDG Edge
0 0 none
0 1 rising edge
1 0 falling edge
1 1 each edge
EEVT Signal selected as external event TIOB Direction
0 0 TIOB input
(1)
0 1 XC0 output
1 0 XC1 output
1 1 XC2 output
WAVSEL Effect
0 0 UP mode without automatic trigger on RC Compare
1 0 UP mode with automatic trigger on RC Compare
0 1 UPDOWN mode without automatic trigger on RC Compare
1 1 UPDOWN mode with automatic trigger on RC Compare
ACPA Effect
0 0 none
0 1 set
1 0 clear
1 1 toggle
ACPC Effect
0 0 none
0 1 set
1 0 clear
1 1 toggle