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Bits 3 to 0— I/O Control A3 to A0 (IOA3 to IOA0)
I/O Control C3 to C0 (IOC3 to IOC0):
IOA3 to IOA0 specify the function of TGRA.
IOC3 to IOC0 specify the function of TGRC.
Bit 3
Bit 2
Channel
IOA3
IOA2
0
0
0
1
1
0
1
318
Bit 1
Bit 0
IOA1
IOA0 Description
0
0
TGR0A is Output disabled
output
1
compare
0
1
register
1
0
0
1
1
0
1
0
0
TGR0A is
input
1
capture
*
1
register
*
*
Initial output is 0
0 output at compare match
output
1 output at compare match
Toggle output at compare
match
Output disabled
Initial output is 1
0 output at compare match
output
1 output at compare match
Toggle output at compare
match
Capture input
Input capture at rising edge
source is
Input capture at falling edge
TIOCA0 pin
Input capture at both edges
Capture input
Input capture at TCNT1
source is channel
count-up/count-down
1/ count clock
(Initial value)
*: Don't care
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