Epson LQ-2170 User Manual page 133

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 Signal
no. name
1 STROBE
2 DATA1
3 DATA2
4 DATA3
5 DATA4
6 DATA5
7 DATA6
8 DATA7
9 DATA8
10 ACKNLG
11 BUSY
12 PE
Specifications, Command Summary, and Character Tables
8-bit parallel, IEEE-1284 compatibility
mode
57-30360 (Amphenol) or equivalent
STROBE pulse
BUSY and ACKNLG signals
TTL compatible (IEEE-1284 level 1 device)
GND In/Out
19 In
20 In
21 In
22 In
23 In
24 In
25 In
26 In
27 In
28 Out
29 Out
28 Out
Description
Strobe pulse. Input data is
latched at falling edge of the
signal.
Bit 0: LSB Parallel input data to
the printer.
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.
A HIGH signal means that the
printer is not ready to accept
data.
A HIGH signal means the
printer is out of paper.
A-13