Service manual

SRP-150
Rev. 1.02
- 23 -
3-5-2(c) Signal Specification (Compatibility/Nibble/Byte mode)
Pin No. Source Compatibility Mode Nibble Mode Byte Mode
1 Host nStrobe HostClk HostClk
2 Host / Printer Data 0 (LSB) Data 0 (LSB) Data 0 (LSB)
3 Host / Printer Data 1 Data 1 Data 1
4 Host / Printer Data 2 Data 2 Data 2
5 Host / Printer Data 3 Data 3 Data 3
6 Host / Printer Data 4 Data 4 Data 4
7 Host / Printer Data 5 Data 5 Data 5
8 Host / Printer Data 6 Data 6 Data 6
9 Host / Printer Data 7 (MSB) Data 7 (MSB) Data 7 (MSB)
10 Printer nAck PtrClk PtrClk
11 Printer Busy PtrBusy PtrBusy
12 Printer Perror AckDataReq AckDataReq
13 Printer Select Xflag Xflag
14 Host nAutoFeed HostBusy HostBusy
15 Printer nFault ND ND
16 Host nInit nInit nInit
17 Host nSelsctIn
IEEE 1284
Active
IEEE 1284
Active
18~25 GND GND GND GND
Table 3-5-2(c) IEEE1284 Pin Description
3-5-2(d) IEEE1284 I/F Cable
Figure 3-5-2(d) IEEE1284 Cable