Section 5: Interface Specifications

5.13 IEEE 1284 INTERFACE (CONT’D)

Pin Assignment

With Centronics standards, each signal pin placement is as follows:

However, the IEEE 1284-B type connector is compliant when connecting the IEEE1284 standard.

Pin no.

Signal Type

Content

Pin no.

1

HOST CLK

Input

19

2

DATA 1

Input

20

3

DATA 2

Input

21

4

DATA 3

Input

22

5

DATA 4

Input

23

6

DATA 5

Input

24

7

DATA 6

Input

25

8

DATA 7

Input

26

9

DATA 8

Input

27

10

PERIPH CLK

Output

28

11

PERIPH ACK

Output

29

12

nACK REVERSE

Output

30

13

XFLAG

Output

31

14

HOST ACK

Input

32

15

 

 

33

16

LOGIC GND

 

34

17

CHASSIS GND

 

35

18

PERIPHERAL LOGIC HIGH

Input

36

Signal Type

SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND SIGNAL GROUND NREVERSE REQUEST nPERIPH REQUEST

1284ACTIVE

Content

Input

Output

Input

5.13 INTERFACE SIGNALS

With Centronics standards, the content of each signal type is as follows. However, each signal line used with IEEE1284 standards is compliant with IEEE1284 standards.

Pin no.

Signal Type

Direction

Contents

1

HOST CLK

Input

A low active pulse is necessary in synchronized

 

 

 

 

signals for scanning Data 1 to Data 8.

2 to 9

DATA 1 to DATA 8

Input

When entering 8 bit parallel Data, Data 1 is the LSB

 

 

 

 

(least significant bit) and Data 8 is the MSB (most

 

 

 

 

significant bit)

10

PERIPH

CLK

Output

This is the LOW active pulse signal that indicates the

 

 

 

 

completion of received data scanning.

11

PERIPH

ACK

Output

HIGH active signal which indicates that the printer

 

 

 

 

cannot receive data.

12

nACK REVERSE

Output

HIGH active signal which indicates that the media has

 

 

 

 

run out.

13

XFLAG

 

Output

HIGH active signal which indicates that data can be

 

 

 

 

received.

14

HOST ACK

Input

Signal for when using the IEEE1284 standard.

17

CHASSIS GND

 

Connects to the Frame Ground

18

PERIPHERAL

Output

The +5V voltage on the printer side.

 

LOGIC HIGH

 

 

19 to 30

SIGNAL GROUND

 

Connects to the ground for each signal

31

nREVERSE

Input

LOW active signal that requests printer initialization.

 

REQUEST

 

 

32

nPERIPH

 

Output

LOW active pulse signal that indicates a printer error.

 

REQUEST

 

 

36

1284ACTIVE

Input

Signal for when using the IEEE1284 standard.

LM Basic 408e/412e Operator’s Manual

Page 5-13

Page 71
Image 71
SATO 412E, 408e manual Interface Signals, Pin no Signal Type Content

412E, 408e specifications

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