Table 9-21 Port B Pin Functions (cont)
Pin
Pin Functions and Selection Method
ITU channel 3 settings (bit CMD1 in TFCR, bit EA3 in TOER, bit PWM3 in TMDR, and
bits IOA2 to IOA0 in TIOR3), bit NDER8 in NDERB, and bit PB
0
DDR in PBDDR select
the pin function as follows
ITU
channel 3
settings
(1) in table below
(2) in table below
PB
0
DDR
—
0
1
1
NDER8
—
—
0
1
Pin function
TIOCA
3
output
PB
0
input
PB
0
output TP
8
output
TIOCA
3
input
*
Note:
*
TIOCA
3
input when CMD1 = PWM3 = 0 and IOA2 = 1.
ITU
channel 3
settings
(2)
(2)
(1)
(2)
(1)
EA3
0
1
CMD1
—
0
1
PWM3
—
0
1
—
IOA2
—
0
0
0
1
—
—
IOA1
—
0
0
1
—
—
—
IOA0
—
0
1
—
—
—
—
PB
0
/TP
8
/
TIOCA
3
293
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