2 register descriptions – Panasonic MN103001G/F01K User Manual
Page 416
I/O Ports
15-50
15.11.2 Register Descriptions
Port 9 is also used for extension mode setting signals EXMOD1 and EXMOD0; memory write signals WE1
and WE0; memory read signal RE; bus authority request signal BR; data acknowledge signal DK; and system clock
SYSCLK. P96, P95, P91, and P90 are general-purpose input/output ports, and P97 and P94 to P92 are general-
purpose output ports.
Each register for port 9 is described below.
Port 9 output register
Register symbol: P9OUT
Address:
x'36008011
Purpose:
This register sets the data to be output on port 9.
Bit No.
7
6
5
4
3
2
1
0
Bit name
P97O P96O P95O P94O P93O P92O P91O P90O
Reset
0
0
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Port 9 pin register
Register symbol: P9IN
Address:
x'36008091
Purpose:
This register reads the value of the port 9 pins.
Bit No.
7
6
5
4
3
2
1
0
Bit name
-
P96I
P95I
-
-
-
P91I
P90I
Reset
0
X
X
0
0
0
X
X
Access
R
R
R
R
R
R
R
R
Port 9 input/output control register
Register symbol: P9DIR
Address:
x'36008071
Purpose:
This register sets the port 9 pins for input or output.
Valid when the P9nM is "1".
(0: input; 1: output)
Bit No.
7
6
5
4
3
2
1
0
Bit name
-
P96D P95D
-
-
-
P91D P90D
Reset
1
0
0
1
1
1
0
0
Access
R
R/W
R/W
R
R
R
R/W
R/W