Epson Stylus Color 640 User Manual

EPSON Stylus Color 440/640/740 Revision A
Chapter 1 Product Description 26
Table 1-10. Parallel I/F Forward Channel
Pin No.
Signal
Name
Return
GND Pin
In/Out Functional Description
1 /STROBE 19 I
The strobe pulse. Read-in of data is
performed at the falling edge of this
pulse.
2-9 DATA0-7 20-27 I
The DATA0 through DATA7 signals
represent data bits 0 to 7, respectively.
Each signal is at high level when data is
logical 1 and low level when data is
logical 0.
10 /ACKNLG 28 O
This signal is a negative pulse indicating
that the printer can again accept data.
11 BUSY 29 O
A high signal indicates that the printer
cannot receive data.
12 PE 28 O A high signal indicates paper-out error.
13 SLCT 28 O
Always at high level when the printer is
powered on.
14 /AFXT 30 I Not used.
31 /INIT 30 I
The falling edge of a negative pulse or a
low signal on this line causes the printer
to initialize. Minimum 50 us pulse is
necessary.
32 /ERROR 29 O
A low signal indicates printer error
condition.
36 /SLIN 30 I Not used.
18 Logic H ---- O Pulled up to +5V via 3.9K ohm resistor.
35 +5V ---- O Pulled up to +5V via 3.9K ohm resistor.
17
Chassis
GND
---- --- Chassis GND.
16,33,
19-30
GND ---- --- Signal GND.
15,34 NC ---- --- Not connected.
Note) In and Out refer to the direction of signal flow from the printer’s point of view.

Epson Stylus Color 640 Specifications

General

Brand	Epson
Model	Stylus Color 640
Category	Printer
Language	English