Interface Specifications; Specifications And Pin Assignments - Epson LQ-570 User Manual

Interface Specifications

Your printer is equipped with a parallel interface.

Specifications and pin assignments

The built-in parallel interface has the following characteristics:
Data format:
Synchronization:
Handshake timing:
Signal level:
Connector:
The table below provides the connector pin assignments and
describes their respective interface signals.
Signal Return
Pin Pin
1
19
2 20
3 21
4
22
5 23
6 24
7 25
8 26
9 27
10 28
Technical Specifications
7-10
8-bit parallel
STROBE pulse
BUSY and ACKNLG signals
TTL compatible
36-pin 57-30360 Amphenol connector or
equivalent
Signal Direction
STROBE IN
DATA 1 IN
IN
DATA 2
IN
DATA 3
DATA 4 IN
DATA 5 IN
DATA 6 IN
DATA 7 IN
DATA 8 IN
ACKNLG
OUT
Description
STROBE pulse to read data. Pulse width
must be more than 0.5 microseconds at
the receiving terminal.
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.
About an 11 -microsecond pulse.
LOW indicates that data has been
received and that the printer is ready to
accept more data.