Epson Stylus Pro User Manual - Page 74

Interface Specifications, Parallel Interface

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Interface Specifications Your printer is equipped with an 8-bit parallel interface and a serial interface. Parallel Interface Data format: Synchronization: Handshake timing: Signal level: Connector: 8-bit parallel, IEEE P1284 mode compatible STROBE pulse BUSY and ACKNLG signals TTL compatible 36-pin, Centronics compatible Pin assignments Signal pin 1 2 3 4 5 6 7 8 9 10 Return pin 19 20 21 22 23 24 25 26 27 28 Signal STROBE DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 DATA 7 DATA 8 ACKNLG Direction IN IN IN IN IN IN IN IN IN 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-µs pulse. LOW indicates data has been received and the printer is ready to accept more data. Technical Specifications B-9

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Interface Specifications
Your printer is equipped with an 8-bit parallel interface and a serial
interface.
Parallel Interface
Data format:
8-bit parallel, IEEE P1284 mode compatible
Synchronization:
STROBE pulse
Handshake timing:
BUSY and
ACKNLG signals
Signal level:
TTL compatible
Connector:
36-pin, Centronics compatible
Pin assignments
Signal
pin
Return
pin
Signal
Direction
Description
1
19
STROBE
IN
STROBE pulse to read data.
2
3
4
5
6
7
8
9
20
21
22
23
24
25
26
27
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
IN
IN
IN
IN
IN
IN
IN
IN
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.
10
28
ACKNLG
OUT
About a 5-
μ
s pulse. LOW
indicates data has been
received and the printer is
ready to accept more data.
Technical Specifications
B-9