Canon MultiPASS C5000 Service Manual page 191

Connector
signals
The following table lists the signals and input/output status of the pin assignments used for
parallel communication
Pin No Signal
-STROBE
1
DATA1
2
DATA2
3
DATA3
4
DATA4
5
DATA5
6
DATA6
7
DATA7
8
DATA8
9
10
BUSY
11
P.E.
12
SELECT
13
AUTO FEED XT*2
14
No Connection
15
GND
16
GND
17
18
Signal descriptions
-STROBE
When the printer receives a low -STROBE pulse of width greater than 0.5~~ 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 -1NIT signal requested
from the computer.
P In No. Signal
19
DATA1 -RET
20
DATA2 -RET
21
DATA3 -RET
22
DATA4 -RET
23
DATA5 -RET
24
DATA6 -RET
25
DATA1 -RET
26
DATA8 -RET
28
BUSY -RET
29
P.E. -RET
30
31
-ERROR
32
33
No Connection
34
35
output
36
1 - 7
Chapter 1: General Description
Input
output
GND
output