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ATSAM4S-XPLD
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SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
36.6.12 External Event/Trigger Conditions
An external event can be programmed to be detected on one of the clock sources (XC0, XC1, XC2) or TIOB. The
external event selected can then be used as a trigger.
external event selected can then be used as a trigger.
The EEVT parameter in TC_CMR selects the external trigger. The EEVTEDG parameter defines the trigger edge for
each of the possible external triggers (rising, falling or both). If EEVTEDG is cleared (none), no external event is defined.
each of the possible external triggers (rising, falling or both). If EEVTEDG is cleared (none), no external event is defined.
If TIOB is defined as an external event signal (EEVT = 0), TIOB is no longer used as an output and the compare register
B is not used to generate waveforms and subsequently no IRQs. In this case the TC channel can only generate a
waveform on TIOA.
B is not used to generate waveforms and subsequently no IRQs. In this case the TC channel can only generate a
waveform on TIOA.
When an external event is defined, it can be used as a trigger by setting bit ENETRG in TC_CMR.
As in Capture Mode, the SYNC signal and the software trigger are also available as triggers. RC Compare can also be
used as a trigger depending on the parameter WAVSEL.
used as a trigger depending on the parameter WAVSEL.
36.6.13 Output Controller
Timer/Counter
Channel 0
TC_EMR0.TRIGSRCA
TIOA0
TIOA0
TC_EMR0.TRIGSRCB
TIOB0
TIOB0
Timer/Counter
Channel 1
TC_EMR1.TRIGSRCA
TIOA1
TIOA1
TC_EMR1.TRIGSRCB
TIOB1
TIOB1
Timer/Counter
Channel 2
TC_EMR2.TRIGSRCA
TIOA2
TIOA2
TC_EMR2TRIGSRCB
TIOB2
TIOB2
PWM comparator outputs (internal signals)
respectively source of PWMH/L[2:0]
respectively source of PWMH/L[2:0]
Timer/Counter