Hitachi H8S/2646 Hardware Manual page 268

Pin Selection Method and Pin Functions
P25/TIOCB4 Switches as follows according to the combinations of the TPU channel 4
setting made using bits MD3 to MD0 of TMDR4, bits IOB3 to IOB0 of TIOR4,
and bits CCR1 and CCR0 of TCR4, as well as the P25DDR bit.
TPU Channel
4 Setting
P25DDR
Pin function
TPU Channel
4 Setting
MD3 to MD0
IOB3 to IOB0
CCLR1,
CCLR0
Output
function
236
Table Below (1)
—
TIOCB4 output
(2) (1)
B'0000, B'01xx
B'0000 B'0001 to
B'0011
B'0100
B'0101 to
B'1xxx
B'0111
— —
— Output
compare
output
Table Below (2)
0
P25 input
TIOCB4 input
(2) (2)
B'0010 B'0011
— B'xx00 Other than B'xx00
— —
— —
mode 2
1
P25 output
(1) (2)
Other B'10
than
B'10
PWM —
output