9.3 PIN FUNCTIONS ON INTERFACES

Paralle interface

Signal Pin No. Name

1 STROBE

DirectionFunction

IN

Goes from High to Low (for at

 

least 0.5 microseconds) when

 

data are valid.

2

DATA1

IN

 

3

DATA2

IN

 

4

DATA3

IN

Eight-bit character data.

5

DATA4

IN

DATA8 is the most significant

6

DATA5

IN

bit; DATA I is the least

significant bit. High is logic 1

7

DATA6

IN

and Low is logic O.

8

DATA7

IN

 

9

DATA8

IN

 

10

ACK

OUT

A low pulse acknowledges

 

 

 

receipt of data.

11

BUSY

OUT

Low when the printer is ready

 

 

 

to accept data.

12

PAPER

OUT

Goes High if the printer runs

 

OUT

 

out of paper.

13

SELECTED

OUT

High when the printer is on line

14-15

N/C

 

Unused

16

SIGNAL

 

Signal ground.

 

GND

 

 

17

CHASSIS

 

Printer’s chassis ground,

 

GND

 

isolated from signal ground.

18

+5VDC

OUT

External supply of +5VDC

19-30

GND

 

Twisted pair return signal

 

 

 

ground level.

31

RESET

IN

Low input resets the printer to

 

 

 

its power-on condition.

32

ERROR

OUT

Goes low to signal that the

 

 

 

printer cannot print due to an

?? ?L

 

 

error condition.

NT /fl

 

1 I—... -2

112

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Star Micronics LS-5 EX, LS-5 TT operation manual PIN Functions on Interfaces, DirectionFunction

LS-5 TT, LS-5 EX specifications

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