9
Pin No.
Signal
Direction
Description
1
STROBE In
Strobe pulse to latch data, Reading occurs
at falling edge.
2
D1
In
3
D2
In
4
D3
In
5
D4
In
6
D5
In
7
D6
In
8
D7
In
9
D8
In
These signals represent the 1st bit to 8th
bit of the parallel data representatively,
each signal is at HIGH level when data is
logic 1, and LOW when data is logic 0.
10
ACK
Out
Answer pulse, LOW level signal indicates
that data have already been received and
the printer gets ready to receive the next
data.
11
BUSY
Out
HIGH level signal indicates that the
printer is BUSY and can not receive data.
12
PE
Out
HIGH level signal indicates that paper is
end.
13
SEL
Out
Pulling up to HIGH level signal by a
resistor
17
FG
---
Signal Cover
18
Logic-H
---
Logic “1” level
32
nFault
Out
Low level means the printer is at fault
