Canon MultiPASS C50, Руководство по обслуживанию

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Connector signals
The following table lists the signals and input/output status of the pin assignments used for parallel
communication.
Pin No. Signal I/O Pin No. Signal I/O
1 -STROBE Input 19 -STROBE -RET*1
2 DATA1 Input 20 DATA1 -RET
3 DATA2 Input 21 DATA2 -RET
4 DATA3 Input 22 DATA3 -RET
5 DATA4 Input 23 DATA4 -RET
6 DATA5 Input 24 DATA5 -RET
7 DATA6 Input 25 DATA6 -RET
8 DATA7 Input 26 DATA7 -RET
9 DATA8 Input 27 DATA8 -RET
10 -ACKNLG Output 28 -ACKNLG -RET
11 BUSY Output 29 BUSY -RET
12 P.E. Output 30 P.E. -RET
13 SELECT Output 31 -INIT Input
14 -AUTO FEED XT*2 Input 32 -ERROR Output
15 No Connection 33 GND
16 GND 34 No Connection
17 GND 35 +5.0V*3 Output
18 +5V*4 Output 36 -SLCT IN*2 Input
* 1 . All -RETs are connected to GND.
* 2 . These signals are valid only in Epson LQ mode.
* 3 . This signal is connected to +5.0V via 3.3k resistor.
* 4 . The level is raised to +5V at 390 resistor.
Signal descriptions
-STROBE
When the printer receives a low -STROBE pulse of width greater than 0.5µs from the computer, it reads
the data from the interface and makes the BUSY line high.
DATA
These signals are the 8 bits of parallel data from the computer. A high level indicates a logical 1; a low
level, a logical 0. The printer reads the DATA lines when a -STROBE pulse is received.
-ACKNLG
The ACKNLG pulse tells the computer that the printer has read the data from the previous -STROBE
pulse. An -ACKNLG pulse is also generated when the printer is powered on, or at the completion of
printer initialization by an -INIT signal requested from the computer.
Chapter 1: General Description
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