REV.-A
GENERAL DESCRIPTION
The standard 8-bit parallel interface has the following specifications:
Data Format
Synchronization
Handshaking
Signal Level
Connector
Data Transmission Timing
8-bit parallel
By STROBE pulse
By BUSY and ACKNLG signals
TTL-compatible
57-30360 (Amphenol) or equivalent
See Figure 1-7.
BUSY
ACKNLG
DATA
STROBE
min.
min.
min.
typ.
typ.
Figure 1-7. Data Transmission Timing
Table 1-9 shows the connector pin assignments and
signal functions of the 8-bit parallel interface.
Table 1-9. Connector Pin Assignments and Signal Functions
Pin No.
Signal Name
Return
Pin No.
Dir.
Functional Description
1
STROBE
19
In
Strobe pulse to read the input data. Pulse width must
be more than 0.5
Input data is latched at the fall-
ing edge of this signal.
2
DATA 1
20
In
Parallel input data to the printer.
3
DATA 2
21
In
“HIGH” level means data “1.”
4
DATA 3
22
In
“LOW” level means data “0.”
5
DATA 4
23
In
6
DATA 5
24
In
7
DATA 6
25
In
8
DATA 7
26
In
9
DATA 8
27
In
10
ACKNLG
28
o u t
This pulse indicates data was received and the printer
is ready to accept more data. Pulse width is 11
approximate.
11
BUSY
29
out
“HIGH” indicates the printer cannot accept more
data.
LQ-510
1-13
Содержание AP-4000
Страница 1: ...LQ 510 AP 4000 T E C H N I C A L M A N U A L EPSON ...
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Страница 125: ...OPTIONAL EQUIPMENT REV A 3 16 Figure 3 12 Lubrication Points 2 LQ 510 ...
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Страница 202: ...APPENDIX REV A Table A 6 E01A05 Pin Functions A 8 LQ 510 ...
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Страница 224: ...APPENDIX REV Figure A 35 LQ 510 Printer Cover A Case Outline Drawing A 32 LQ 510 ...
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