Epson Stylus Color IIs Guia do Utilizador descarregar pdf (Página 92)

Pin Assignments

Signal

Return

pin Signal Direction Description

119

STROBE IN STROBE pulse to read data.

DATA 1

DATA 2

DATA 3

DATA 4

DATA 5

DATA 6

DATA 7

DATA 8

These signals represent

information in bits 0 to 7 of

parallel data respectively.

Each signal is at HIGH level

when data is logical 1 and

LOW when it is logical 0.

10 28

ACKNLG OUT About a 5-µs pulse. LOW

indicates data has been

received and the printer is

ready to accept more data.

11 29 BUSY OUT A HIGH signal indicates the

printer cannot receive data.

The signal goes HIGH in the

following cases:

1) During data entry

(for each character)

2) During initialization

3) During self test,

demonstration, and

default setting printing

4) During a printer-error state

12 28 PE OUT A HIGH signal indicates the

printer is in a paper-out state

or in an error state.

13 28 SLCT OUT Pulled up to +5 V through

1 kΩ resistance

14 30

AFXT IN Not used

15 - NC - Not used

16 - GND - Logic ground level

17 - CHASSIS

GND

- Printer’s chassis ground,

which is connected to the

logic ground

18 - Logic H OUT Not used

19-30 - GND - Twisted-pair return signal

ground level

Hudson User’s Guide

A5 size Appendix A

10-28-95 DR, pass 2-Rev1

A-10 Technical Specifications

1 2 ... 87 88 89 90 91 92 93 94 95 96 97 ... 113 114

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