Interface Specifications

Your printer is equipped with an 8-bit parallel interface and a serial interface.

Parallel Interface

Data format:

8-bit parallel, IEEE P1284 mode compatible

Synchronization:

 

 

 

 

STROBE pulse

Handshake timing:

 

 

 

BUSY and ACKNLG signals

Signal level:

TTL compatible

Connector:

36-pin, Centronics compatible

Pin assignments

Signal

Return

 

 

 

 

 

 

 

 

 

pin

pin

Signal

Direction

 

Description

 

 

 

 

 

 

 

 

 

 

 

1

19

 

 

 

 

IN

 

 

pulse to read data.

 

 

STROBE

 

 

 

STROBE

 

 

 

 

 

 

 

 

 

 

 

2

20

 

 

DATA 1

IN

 

These signals represent

3

21

 

 

DATA 2

IN

 

information in bits 0 to 7 of

4

22

 

 

DATA 3

IN

 

parallel data respectively.

5

23

 

 

DATA 4

IN

 

Each signal is at HIGH level

6

24

 

 

DATA 5

IN

 

when data is logical 1 and

7

25

 

 

DATA 6

IN

 

LOW when it is logical 0.

8

26

 

 

DATA 7

IN

 

 

 

9

27

 

 

DATA 8

IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

28

 

 

OUT

 

About a 5-μs pulse. LOW

 

ACKNLG

 

 

 

 

 

 

 

 

 

 

 

indicates data has been

 

 

 

 

 

 

 

 

 

received and the printer is

 

 

 

 

 

 

 

 

 

ready to accept more data.

 

 

 

 

 

 

 

 

 

 

 

Technical Specifications

B-9