Panasonic MN103001G/F01K User Manual
Page 409
I/O Ports
15-43
Port 7 dedicated output control register
Register symbol: P7SS
Address:
x'3600804D
Purpose:
This register selects the content output on the port 7 pins.
Valid when the P7nM is “0”.
Bit No.
7
6
5
4
3
2
1
0
Bit name
-
-
-
-
P73S
-
-
-
Reset
0
0
0
0
0
0
0
0
Access
R
R
R
R
R/W
R
R
R
P73M; P73S
00: Chip select signal 3 output (CS3)
01: Address output (A23)
1x: General-purpose output port (P73)
P72M
0: Chip select signal 2 output/DRAM RAS signal 2 output (CS2/RAS2)
* The CS2/RAS2 selection depends on the setting of the registers within the bus controller.
1: General-purpose output port (P72)
Note: For details on the bus controller register settings, refer to section 8.6, "Description of Registers."
P71M
0: Chip select signal 1 output/DRAM RAS signal 1 output (CS1/RAS1)
* The CS1/RAS1 selection depends on the setting of the registers within the bus controller.
1: General-purpose output port (P71)
P70M
0: Chip select signal 0 output (CS0)
1: General-purpose output port (P70)