SAM7S256_14 Datasheet, PDF (470/775 Pages) ATMEL Corporation – ARM-based Flash MCU

0 = Counter clock is not disabled when counter reaches RC.
1 = Counter clock is disabled when counter reaches RC.
• EEVTEDG: External Event Edge Selection
EEVTEDG
0
0
0
1
1
0
1
1
Edge
none
rising edge
falling edge
each edge
• EEVT: External Event Selection
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
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
WAVSEL
0
0
1
0
0
1
1
1
Effect
UP mode without automatic trigger on RC Compare
UP mode with automatic trigger on RC Compare
UPDOWN mode without automatic trigger on RC Compare
UPDOWN mode with automatic trigger on RC Compare
• WAVE
0 = Waveform Mode is disabled (Capture Mode is enabled).
1 = Waveform Mode is enabled.
• ACPA: RA Compare Effect on TIOA
ACPA
0
0
Effect
none
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
470