at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 363

• Manufacturer Part Number: at91rm3400
• Description: Atmel Advanced At91 Arm Microcontroller
• Manufacturer: ATMEL Corporation

• EEVTEDG: External Event Edge Selection
• EEVT: External Event Selection
Note:
• 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
• WAVE = 1
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
1790A–ATARM–11/03
0
0
1
1
0
1
0
1
0
0
1
1
1. If TIOB is chosen as the external event signal, it is configured as an input and no longer generates waveforms.
0
0
1
1
0
0
1
1
EEVTEDG
WAVSEL
ACPC
EEVT
ACPA
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Edge
none
rising edge
falling edge
each edge
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
Signal selected as external event
TIOB
XC0
XC1
XC2
Effect
none
set
clear
toggle
Effect
none
set
clear
toggle
TIOB Direction
input
output
output
output
(1)
AT91RM3400
363