Panasonic MN103001G/F01K User Manual

 I/O Ports

15-28

15.6.3 Pin Configurations

Table 15-6-1 shows the pin configurations for port 4.

Table 15-6-1  Port 4 Configuration

Port

Pin P4n

P4nM = "1"

P4nM = "0"

No.

P4nD = "1"

P4nD = "0"

P4nS = "1"

P4nS = "0"

Port 4 75

P40 General-purpose

General-purpose

SBT0

*1

Serial 0 transfer clock input/output

output port

input port

74

P41 General-purpose

General-purpose

SBI0

Serial 0 data input

output port

input port

73

P42 General-purpose

General-purpose

SBO0

*1

Serial 0 data input/output

output port

input port

71

P43 General-purpose

General-purpose

DCAS0

DRAM CAS 

signal 0

SBT1 

*2

Serial 1 transfer

output port

input port

output (for 2CAS)

clock input/output

70

P44 General-purpose

General-purpose

DCAS1

DRAM CAS 

signal 1

SBI1

Serial 1

output port

input port

output (for 2CAS)

data input

68

P45 General-purpose

General-purpose

DWE

DRAM write 

signal

SBO1 

*2

Serial 1

output port

input port

output (for 2CAS)

data input/output

[Note 1]

: When reset (whether in address/data separate mode or address/data multiplex mode)

*1

: The input/output setting is made through the serial interface 0 settings.

*2

: The input/output setting is made through the serial interface 1 settings.

Note: For details on the serial interface settings, refer to chapter 13, "Serial Interface."

[Note 2]

When the bus authority is granted, DWE, DCAS1, and DCAS0 go to high impedance.