Interface Specifications; Parallel Interface - Epson Stylus Color II Reference Manual

Interface Specifications

Parallel Interface

Data format:
Synchronization:
Handshake timing:
Signal level:
Connector:
Pin assignments
Signal Return
Pin Pin
1 19
2 20
3 21
4 22
5 23
6 24
7 25
8 26
9 27
10 28
11 29
8-bit parallel, IEEE P1284 compatible mode
STROBE pulse
BUSY and ACKNLG signals
TTL compatible
36-pin, Centronics compatible connector
Signal Direction
STROBE IN
DATA 0 IN
DATA 1 IN
DATA 2 IN
DATA 3 IN
DATA 4 IN
DATA 5 IN
DATA 6 IN
DATA 7
IN
ACKNLG OUT
BUSY OUT
Description
STROBE pulse to read data.
These signals represent
information in bits 0 to 7 of
parallel data respectively.
Each signal is at HIGH level
when data is logical 1 and
LOW when it is logical 0.
About a 5- s pulse. LOW
indicates data has been
received and the printer is
ready to accept more data.
A HIGH signal indicates the
printer cannot receive data.
The signal goes HIGH in the
following cases:
1) During data entry
(for each character)
2) During initialization
3) During self test,
demonstration, and
default-setting printing
4) During a printer-error state
Technical Specifications
A-9