Panasonic MN103001G/F01K - Manual (Page 397)

I/O Ports
15-31
Fig. 15-7-3 Port 5 Block Diagram (P53)
Internal data bus
P5OUT
P53O
TM11IO
M
P
X
P53
M
P
X
P... Represents one bit of each register.
P53I
P5IN
TM11IO/TM3IO/SBT3
TM3IO
P5DIR
P53D
M
P
X
P53M
P5MD
P53S
P5SS