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Citizen Systems CLP-8301 User Manual

Page 69

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Chapter 9 Specifications

- 60 -

2 Parallel

interface

Specifications

Transfer method:

8-bit parallel (compatibility mode)

Synchronous: Strobe

pulse

Handshaking:

ACKNLG and BUSY signals

Signal level:

TTL

Printer side:

36-pin non-phenol type

Pin assignment

Pin No.

Signal

Input/Output

Description

1

STROBE

Input

Strobe signal to read 8-bit data

2

-9

DATA1-8

Input

8-bit parallel data signal

10

ACKNLG

Output

8-bit parallel data request signal

11

BUSY

Output

Signal to indicate printer ‘Busy’

12

PERROR

Output

Signal to indicate paper out

13

SELECT

Output

Signal to indicate printer on line or off line

14 N.C

- Not

used

15 NC

- Not

used

16 GND

- Ground

17 F.GND

- Frame

ground

18 N.C

- Not

used

19

-30 GND

- GND

31 INIT

Input Printer

reset

32

FAULT

Output

Signal to indicate printer error

33

-35 N.C

- Not

used

36 N.C

- Not

used