
Table 1-13. 8-bit Parallel l/F Connector Pin Assignments
Pin No.
Signal
Return
Description
1
STROBE
19
I
Strobe pulse to read the input data. Pulse width must
be more than 0.5
input data is latched after
falling edge of this signal.
2
20
I
Parallel input data to the printer.
3
21
I
“HIGH” level means data “1”.
4
22
“LOW” level means data “O”.
5
23
6
24
I
7
25
8
26
I
9
27
I
10
ACKNLG
28
0
This pulse indicates data are received and the
printer is ready to accept next data. Pulse width is
approx. 11
11
BUSY
29
0
“HIGH” indicates printer can not accept data.
12
PE
30
0
“HIGH’ ’indicates paper-out.
This signal is effective only when ERROR signal is
“LOW”.
13
SLCT
—
o
Always “HIGH”. (Pulled up to
through 3.3 K
ohms resistor.)
AUTOFEED-XT
–
If this signal is “LOW” when the printer is initialized,
a line feed is automatically performed by input of
“CR” code (Auto
15
NC
—
—
Not
16
—
—
Ground for twisted-pair.
17
Chassis
—
—
Printer chassis ground.
18
NC
—
—
Not used.
19 to 30
—
—
Ground for twisted-pair.
31
INIT
16
Pulse (width : 50
min., active “LOW”) input for
printer initialization.
32
ERROR
.
0
“LOW indicates that some error has occurred in the
printer.
33
—
.
Ground for twisted-pair.
34
NC
—
—
Not
35
—
o
Always “HIGH”. (Pulled up to
through 3.3 K
ohms resistor.)
36
SLECT-IN
—
I
If the signal is “LOW” when printer is initialized, the
control is disabled.
NOTES :
“Direction” of signal flow is as viewed from the printer.
2.
“Return” denotes “TWISTED PAIR RETURN” and is to be connected at signal ground level.
1-14
Содержание LQ-1060
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Страница 5: ...REVISION TABLE REVISION DATE ISSUED I CHANGE DOCUMENT I I 1st issue I v ...
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Страница 203: ...Figure 5 6 MONPS MONPSE Board Voltage Waveforms 5 17 ...
Страница 204: ...REV A Fiaure 5 6 MONPS MONPSE Board Voltage Waveforms z L 5 18 ...
Страница 205: ...Figure 5 6 MONPS MONPSE Board Voltage Waveforms 5 19 ...
Страница 217: ... n 3 m I BUS CONTROL 1 LJ Pc II SYSTEM CONTROL I I L 1 I PERIPHERAL BUS IIF u lJ Figure A 2 PD78213 Block Diagram A 3 ...
Страница 248: ...REV A A 3 DRAWINGS 3 J32 J TI g 4 Figure A 27 MONPS Board Component Layout A 34 ...
Страница 249: ... J30 33r J32 d m b13 G a TI 7 IC20 r El m J24 C2 L cl mow B L U E u Figure A 28 MONPSE Board Component Layout A 35 ...
Страница 250: ... 2 1 1 1 1 I A b 2 Ozaz 1202 C O ZZH Z UOEE vu I 1 Figure A 29 MONPS Board Circuit Diagram ...
Страница 251: ...REV A 1 UXZO xl OX 9 xl Onz b 8M 118 en A N J 93 T 818 Figure A 30 MONPSE Board Circuit Diagram A 37 ...
Страница 252: ...L t g Figure A 31 JUNMM Board Component Layout A 38 ...