Figure C-9 (d) Port 9 Block Diagram (Pins P9
4
, P9
5
)
WP9D:
WP9:
RP9:
n = 4 and 5
Write to P9DDR
Write to port 9
Read port 9
WP9D
Reset
Q
D
R
C
P9 DDR
n
WP9
Reset
Q
D
R
C
P9 DR
n
RP9
P9
n
Internal data bus
SCI
Clock input
enable
Clock output
enable
Clock output
Clock input
Interrupt
controller
or
input
IRQ
4
IRQ
5
840
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