Panasonic MN103001G/F01K Manual De Usuario

I/O Ports

15-27

Port 4 dedicated output control register

Register symbol: P4SS
Address:

x'36008048

Purpose:

Along with P4MD, this register selects the content output on the port 4 pins.

Bit No.

7

6

5

4

3

2

1

0

Bit name

-

-

P45S P44S P43S

-

-

-

Reset

0

0

0

0

0

0

0

0

Access

R

R

R/W

R/W

R/W

R

R

R

P45M; P45S

00: Serial 1 data input/output (SBO1)

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

01: DRAM write signal output [for 2CAS] (DWE)

1x: General-purpose input/output port (P45)

P44M; P44S

00: Serial 1 data input (SBI1)

01: DRAM CAS signal 1 output [for 2CAS] (DCAS1)
1x: General-purpose input/output port (P44)

P43M; P43S

00: Serial 1 transfer clock input/output (SBT1)

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

01: DRAM CAS signal 0 output [for 2CAS] (DCAS0)
1x: General-purpose input/output port (P43)

P42M

0: Serial 0 data input/output (SBO0)

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

1: General-purpose input/output port (P42)

P41M

0: Serial 0 data input (SBI0)
1: General-purpose input/output port (P41)

P40M

0: Serial 1 transfer clock input/output (SBT0)

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

1: General-purpose input/output port (P40)

Note: If DWE, DCAS1, and DCAS0 are selected in the P4MD and P4SS registers, each of these control signals is

output, regardless of the value of P4DIR.  The input/output settings for this general-purpose port are made
through the P4DIR register.