Interface Input/Output - Canon BJ-W3000 Service Manual

CHAPTER 2. BASIC OPERATION
B. Interface Input/Output
1. Parallel interface
The parallel interface conforms to IEEE1284-B and is applicable to the compatible mode and
nibble mode (2-way interface).
a. Input/output signal and pin assignment
Pin Signal
No. Compatible
1 Strobe HostClk
2 Data 1
3 Data 2
4 Data 3
5 Data 4
6 Data 5
7 Data 6
8 Data 7
9 Data 8
10 Ack
11 Busy PtrBusy
12 Perror AckDataReq
13 Select
14 AutoFd HostBusy
15 Not used
16 GND
17 GND
18 Peripheral Logic High
2–2
Signal direction
Nibble (PC to the printer)
PtrClk
Xflag
Pin
No. Compatible
19
20
21
22
23
24
25
26
27
28
29
30
31
32 Fault
33
34
35 Peripheral Logic High
36 Selectin
Table 2-101
Signal Signal direction
Nibble (PC to the printer)
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Init
DataAvail
GND
Not used
IEEE1284active