2 register descriptions – Panasonic MN103001G/F01K User Manual

Page 408

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I/O Ports

15-42

15.9.2 Register Descriptions

Port 7 is a general-purpose output port that is also used for address bus signal A23, DRAM RAS signals RAS2

and RAS1, chip select signals CS3 to CS0.

Each register for port 7 is described below.

Port 7 output register

Register symbol: P7OUT

Address:

x'3600800D

Purpose:

This register sets the data to be output on port 7.

Bit No.

7

6

5

4

3

2

1

0

Bit name

-

-

-

-

P73O P72O P71O P70O

Reset

0

0

0

0

0

0

0

0

Access

R

R

R

R

R/W

R/W

R/W

R/W

Port 7 output mode register

Register symbol: P7MD

Address:

x'3600802D

Purpose:

This register selects the content output on the port 7 pins.

Bit No.

7

6

5

4

3

2

1

0

Bit name

-

-

-

-

P73M P72M P71M P70M

Reset

0

0

0

0

0

0

0

0

Access

R

R

R

R

R/W

R/W

R/W

R/W

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