AT91 datasheet(138/153 Pages) ATMEL

138 / 153 page

138

AT91X40 Series

1354D–ATARM–08/02

• CPCDIS: Counter Clock Disable with RC Compare (Code Label TC_CPCDIS)

0 = Counter clock is not disabled when counter reaches RC.

1 = Counter clock is disabled when counter reaches RC.

• 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

EEVTEDG

Edge

Code Label

TC_EEVTEDG

None

TC_EEVTEDG_EDGE_NONE

Rising edge

TC_EEVTEDG_RISING_EDGE

Falling edge

TC_EEVTEDG_FALLING_EDGE

Each edge

TC_EEVTEDG_BOTH_EDGE

EEVT

Signal Selected as

External Event

TIOB Direction

Code Label

TC_EEVT

TIOB

Input(1)

TC_EEVT_TIOB

XC0

Output

TC_EEVT_XC0

XC1

Output

TC_EEVT_XC1

XC2

Output

TC_EEVT_XC2

ACPA

Effect

Code Label

TC_ACPA

None

TC_ACPA_OUTPUT_NONE

Set

TC_ACPA_SET_OUTPUT

Clear

TC_ACPA_CLEAR_OUTPUT

Toggle

TC_ACPA_TOGGLE_OUTPUT

AT91 Datasheet(PDF) 138 Page - ATMEL Corporation

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