Table 1-6. Parallel Interface Pin Assignment - Epson DFX-8000 Service Manual

Pin No. Signal Name
1
STROBE
2 DATA 1
3 DATA2
4
DATA3
5
DATA4
6 DATA5
7 DATA6
8 DATA7
9 DATA8
10 ACKNLG
11 BUSY
12 PE
13
SLCT
14 AUTO FEED-XT
—
15
16
17
Chassis GND
—
18
3 0
9 to
31 I NIT
3 2 ERROR
3 3
—
3 4
—
3 5
3 6

Table 1-6. Parallel Interface Pin Assignment

Return Pin No. DIR
19 In
20
In
In
21
2 2 In
2 3 In
2 4 In
2 5 In
In
2 6
2 7 In
2 8 o u t
2 9 o u t
3 0 o u t
—
o u t
In
—
— —
— —
—
—
— —
— —
16 In
—
o u t
— —
— —
—
o u t
—
In
Functional
Strobe pulse to read the input data. Pulse width
must be more than 0.5 µs Input data is latched
after falling edge of this signal.
Parallel input data to the printer.
"HIGH" level means data " 1".
"LOW" level means data "O'".
This pulse indicates data are received and the
printer is ready to accept next data.
pulse width is approx. 12 #s.
HIGH indicates printer can not accept next data.
HIGH indicates papepr-out. This signal is effective
only when ERROR signal is "LOW".
Always "HIGH" output. (Pulled up to +5V through
3.3K ohms register.)
If the signal is "LOW" when the printer is initialized
line feed is automaitcally performed by input of
"CR" code. (Auto LF)
Not used
Ground for twisted-pair grounding.
Chassis ground level of printer
Not used.
Ground for twisted-pair grounding.
Pulse (width: 50 0s min., active "LOW") input for
printer initialization.
LOW indicates that some error has occurred in the
printer.
Ground for twisted-pair grounding
Not used.
Always "HIGH". (Pulled up to +5V through a 3.3
K-ohm register.)
If the signal is "LOW" when printer is initialized, the
DC 1 /DC3 control is disabled.
1 - 1 7
REV.-A
Description