Data Sheet

639
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
z Bit 4 – TCINV: TC Inverted Event Input
This bit inverts the input event source when used in PWP or PPW measurement.
0: Input event source is not inverted.
1: Input event source is inverted.
This bit is not enable-protected.
z Bit 3 – Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero
when this register is written. This bit will always return zero when read.
z Bits 2:0 – EVACT[2:0]: Event Action
These bits define the event action the TC will perform on an event,as shown in Table 29-11.
Table 29-11. Event Action
Value Name Description
0x0 OFF Event action disabled
0x1 RETRIGGER Start, restart or retrigger TC on event
0x2 COUNT Count on event
0x3 START Start TC on event
0x4 - Reserved
0x5 PPW Period captured in CC0, pulse width in CC1
0x6 PWP Period captured in CC1, pulse width in CC0
0x7 - Reserved