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1745D–ATARM–04-Nov-05
AT91M55800A
• EEVTEDG: External Event Edge Selection
• EEVT: External Event Selection
Note: If TIOB is chosen as the external event signal, it is configured as an input and no longer generates waveforms.
• ENETRG: External Event Trigger Enable (Code Label TC_ENETRG)
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.
• CPCTRG: RC Compare Trigger Enable (Code Label TC_CPCTRG)
0 = RC Compare has no effect on the counter and its clock.
1 = RC Compare resets the counter and starts the counter clock.
• WAVE = 1 (Code Label TC_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 Code Label: TC_EEVTEDG
0 0 None TC_EEVTEDG_EDGE_NONE
0 1 Rising edge TC_EEVTEDG_RISING_EDGE
1 0 Falling edge TC_EEVTEDG_FALLING_EDGE
1 1 Each edge TC_EEVTEDG_BOTH_EDGE
EEVT
Signal Selected as
External Event
TIOB Direction Code Label: TC_EEVT
0 0 TIOB Input
(1)
TC_EEVT_TIOB
0 1 XC0 Output TC_EEVT_XC0
1 0 XC1 Output TC_EEVT_XC1
1 1 XC2 Output TC_EEVT_XC2
ACPA Effect Code Label: TC_ACPA
0 0 None TC_ACPA_OUTPUT_NONE
0 1 Set TC_ACPA_SET_OUTPUT
1 0 Clear TC_ACPA_CLEAR_OUTPUT
1 1 Toggle TC_ACPA_TOGGLE_OUTPUT
ACPC Effect Code Label: TC_ACPC
0 0 None TC_ACPC_OUTPUT_NONE
0 1 Set TC_ACPC_SET_OUTPUT
1 0 Clear TC_ACPC_CLEAR_OUTPUT
1 1 Toggle TC_ACPC_TOGGLE_OUTPUT