INTERFACE INFORMATION

Compatible Mode

Pin

Return

 

 

Signal

Direc-

Description

No.

Pin No.

 

 

name

tion

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

19

 

 

 

 

 

 

Input

This signal is a strobe pulse

Data Strobe

 

 

 

(DSTB)

 

 

for reading data (Data 1 to 8).

 

 

 

 

 

 

 

 

 

 

The printer reads data when

 

 

 

 

 

 

 

 

 

 

this signal is low. The pulse

 

 

 

 

 

 

 

 

 

 

width must be 1 μs or more at

 

 

 

 

 

 

 

 

 

 

the receiving terminal.

 

 

 

 

 

 

 

 

 

 

 

2–9

20--27

 

Data 1 to 8

Input

Data 8 (pin 9) is the most

 

 

 

 

 

 

 

 

 

 

significant bit; however, this

 

 

 

 

 

 

 

 

 

 

pin is not used in 7-bit ASCII

 

 

 

 

 

 

 

 

 

 

communications.

 

 

 

 

 

 

 

 

 

 

Logical 1 signals must go high

 

 

 

 

 

 

 

 

 

 

at least 1 μs before the falling

 

 

 

 

 

 

 

 

 

 

edge of the

 

signal

 

 

 

 

 

 

 

 

 

 

Data Strobe

 

 

 

 

 

 

 

 

 

 

and must stay high for at least

 

 

 

 

 

 

 

 

 

 

1 μs after the rising edge.

 

 

 

 

 

 

 

 

 

 

 

 

 

10

28

 

 

 

 

 

 

 

Output

This pulse signal indicates

Acknowledge

 

 

 

 

 

 

that the printer has received

 

 

(ACK)

 

 

 

 

 

 

 

 

 

 

 

data and is ready to accept the

 

 

 

 

 

 

 

 

 

 

next set of data.

 

 

 

 

 

 

 

 

 

 

This signal is also sent when

 

 

 

 

 

 

 

 

 

 

the printer is switched from

 

 

 

 

 

 

 

 

 

 

offline to online.

 

 

 

 

 

 

 

 

 

 

 

11

29

 

Busy

Output

Data cannot be received when

 

 

 

 

 

 

 

 

 

 

this signal is high. This signal

 

 

 

 

 

 

 

 

 

 

is high during data entry,

 

 

 

 

 

 

 

 

 

 

when the printer is offline,

 

 

 

 

 

 

 

 

 

 

when the buffer is full, or

 

 

 

 

 

 

 

 

 

 

when an error occurs.

 

 

 

 

 

 

 

 

 

 

 

12

30

 

Paper Empty

Output

This signal is high when the

 

 

(PE)

 

printer is out of paper.

 

 

 

 

 

 

 

 

 

 

 

 

 

D-2

User's Manual

Page 214
Image 214
Fujitsu DL3800 manual Interface Information, Compatible Mode, Pin Return Signal Direc Description Pin No, Tion, Ack