APPENDICES

Signal Description

Pin No.

Signal Name

IN/OUT

Explanation

 

 

 

 

 

 

 

 

 

1

DATA STROBE

IN

Data is latched at the leading edge of this

 

 

 

 

 

 

 

 

signal.

 

 

 

 

 

 

 

 

 

2 - 9

DATA 0 - 7

IN

Parallel 8 bit data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

ACKNLG

OUT

Data reception is completed and the printer is

 

 

 

 

 

 

 

 

ready for the next data reception when this

 

 

 

 

 

 

 

 

signal becomes low.

 

 

 

 

 

 

 

 

11

BUSY

OUT

The printer cannot receive data when this

 

 

 

 

 

 

 

 

signal is high. The signal becomes high under

 

 

 

 

 

 

 

 

data receiving, off-line, or error states.

 

 

 

 

 

 

 

 

12

PE

OUT

This signal becomes high when a paper

 

 

 

 

 

 

 

 

empty state is detected.

 

 

 

 

 

 

 

 

13

SLCT

OUT

This signal becomes high when the printer is

 

 

 

 

 

 

 

 

selected and low when it is deselected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IN

This signal is used only for the bi-directional

14

AUTO FEED

 

 

 

 

 

 

 

 

interface.

 

 

 

 

 

 

 

 

 

 

 

 

 

IN

This signal is used only for the bi-directional

31

INPUT PRIME

 

 

 

 

 

 

 

 

interface.

 

 

 

 

 

 

 

 

 

 

 

 

OUT

This signal becomes low when the printer is

32

FAULT

 

 

 

 

 

 

 

 

in the paper empty, off-line, or error states.

 

 

 

 

 

 

 

 

 

 

 

IN

This signal is used only for the bi-directional

36

SLCT IN

 

 

 

 

 

 

 

 

interface.

 

 

 

 

 

 

 

 

 

A–9