Epson ActionLaser User Manual - Page 197

Interface Specifications, Parallel interface, Pin assignments for the parallel interface

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Interface Specifications The laser printer has the following resident interfaces: • Parallel • RS-232C/RS-422A serial. Parallel interface Your printer is equipped with an 8-bit parallel interface. Pin assignments for the parallel interface The parallel interface connector pin assignments and a description of the interface signals are shown in the table below. Signal Pin 1 Return Pin 19 2 20 3 21 4 22 5 23 6 24 7 25 8 26 9 27 10 28 11 29 12 Signal DATA STROBE DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 DATA 7 DATA 8 ACK BUSY PE Direction Description IN Signal to read data in. IN IN IN IN IN IN IN IN OUT OUT OUT These signals represent information of the 1st to 8th bits of parallel data respectively. Each signal is at HIGH level when data is logical 1 and LOW when it is logical 0. Acknowledge receiving data. A HIGH signal indicates that the printer cannot receive data. A HIGH signal indicates that the printer is out of paper. Technical Specifications B-7

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Interface Specifications
The laser printer has the following resident interfaces:
• Parallel
• RS-232C/RS-422A serial.
Parallel interface
Your printer is equipped with an 8-bit parallel interface.
Pin assignments for the parallel interface
The parallel interface connector pin assignments and a description
of the interface signals are shown in the table below.
Signal
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Return
Pin
19
20
21
22
23
24
25
26
27
28
29
PE
Signal
DATA
STROBE
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
ACK
BUSY
Direction
IN
IN
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
OUT
Description
Signal to read data in.
These signals represent
information of the 1st to
8th bits of parallel data
respectively. Each signal
is at HIGH level when data
is logical 1 and LOW when
it is logical 0.
Acknowledge receiving data.
A HIGH signal indicates that
the printer cannot receive
data.
A HIGH signal indicates that
the printer is out of paper.
Technical Specifications B-7