Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 553
SAM9G20
ETRGEDG: External Trigger Edge Selection
ABETRG: TIOA or TIOB External Trigger Selection
0: TIOB is used as an external trigger.
1: TIOA is used as an external trigger.
CPCTRG: RC Compare Trigger Enable
0: RC Compare has no effect on the counter and its clock.
1: RC Compare resets the counter and starts the counter clock.
WAVE
0: Capture Mode is enabled.
1: Capture Mode is disabled (Waveform Mode is enabled).
LDRA: RA Loading Selection
LDRB: RB Loading Selection
ETRGEDG Edge
0 0 none
0 1 rising edge
1 0 falling edge
1 1 each edge
LDRA Edge
0 0 none
0 1 rising edge of TIOA
1 0 falling edge of TIOA
1 1 each edge of TIOA
LDRB Edge
0 0 none
0 1 rising edge of TIOA
1 0 falling edge of TIOA
1 1 each edge of TIOA