Interface SpecificationsThe laser printer has the following resident interfaces:

Parallel

RS-232C/RS-422A serial.Parallel interfaceYour printer is equipped with an 8-bit parallel interface.Pin assignments for the parallel interface

The parallel interface connector pin assignments and a description of the interface signals are shown in the table below.

Signal

Return

 

 

 

 

 

 

 

Pin

 

Pin

 

Signal

Direction

Description

1

19

 

 

 

 

 

 

 

 

DATA

IN

Signal to read data in.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STROBE

 

 

2

20

 

DATA 1

IN

These signals represent

3

21

 

 

DATA 2

IN

information of the 1st to

4

22

 

DATA 3

IN

8th bits of parallel data

5

23

 

DATA 4

IN

respectively. Each signal

6

24

 

DATA 5

IN

is at HIGH level when data

7

25

 

DATA 6

IN

is logical 1 and LOW when

8

26

 

DATA 7

IN

it is logical 0.

9

27

 

DATA 8

IN

 

10

28

 

 

 

 

 

 

 

 

 

 

OUT

Acknowledge receiving data.

 

ACK

11

29

 

 

 

 

 

 

 

 

BUSY

OUT

A HIGH signal indicates that

 

 

 

 

 

 

 

 

 

 

the printer cannot receive

 

 

 

 

 

 

 

 

 

 

data.

12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PE

OUT

A HIGH signal indicates that

 

 

 

 

 

 

 

 

 

 

the printer is out of paper.

 

 

 

 

 

 

 

 

 

 

 

Technical Specifications B-7