Epson LQ-2070 User Manual page 134

Parallel interface (forward channel)
Transmission mode:
Adaptable connector:
Synchronization:
Handshaking:
Signal level:
The following table lists the parallel connector pin assignments and
describes their respective interface signals.
Pin
S i g n a l
no.
n a m e
1
STROBE
2
DATA 1
3
DATA 2
4
DATA 3
5
DATA 4
6
DATA 5
7
DATA 6
8
DATA 7
9
DATA 8
10
ACKNLG
11
BUSY
12
PE
13
SLCT
Specifications, Command Summa y, and Character Tables
8-bit parallel, IEEE-P1284 compatibility
mode
57-30360 (Amphenol) or equivalent
STROBE pulse
BUSY and ACKNLG signals
TTL. compatible (IEEE-P1284 level 11 device)
GND
In/Out*
19
In
20 In
21
I n
In
22
23 In
24 In
I n
25
26 In
27
I n
Out
28
29
O u t
28
O u t
28
O u t
Description
Strobe pulse. Input data is latched at
falling edge of the signal.
Parallel input data to the printer.
bit O:LSB
bit 1
bit 2
bit 3
bit 4
bit 5
bit 6
bit 7:MSB
This signal (negative pulse) indicates
that the printer has received data and is
ready to accept more.
This signal's high level means that the
printer ready to accept data.
This signal's high level means that the
printer is out of paper.
Always at high level when the printer in
powered on.
A-13