Appendix C: Parallel Interface
The
Table of Connection Signals for Each Mode
Pin No. | Direction | Compatibility Mode | Nibble Mode | Byte Mode |
|
|
Signal Name | Signal Name | Signal Name |
|
| ||
|
|
|
| |||
|
|
|
|
|
|
|
1 | In | nStrobe | Host Clock | Host Clock |
|
|
|
|
|
|
|
|
|
2 | In/Out | Data0 | Data0 | Data0 |
|
|
|
|
|
|
|
|
|
3 | In/Out | Data1 | Data1 | Data1 |
|
|
|
|
|
|
|
|
|
4 | In/Out | Data2 | Data2 | Data2 |
|
|
|
|
|
|
|
|
|
5 | In/Out | Data3 | Data3 | Data3 |
|
|
|
|
|
|
|
|
|
6 | In/Out | Data4 | Data4 | Data4 |
|
|
|
|
|
|
|
|
|
7 | In/Out | Data5 | Data5 | Data5 |
|
|
|
|
|
|
|
|
|
8 | In/Out | Data6 | Data6 | Data6 |
|
|
|
|
|
|
|
|
|
9 | In/Out | Data7 | Data7 | Data7 |
|
|
|
|
|
|
|
|
|
10 | Out | nAck | PtrClk | PtrClk |
|
|
|
|
|
|
|
|
|
11 | Out | Busy | PtrBusy/Data3,7 | PtrBusy |
|
|
|
|
|
|
|
|
|
12 | Out | PError | AckDataReq/Data2,6 | AckDataReq |
| APPENDIX |
|
|
|
|
|
| |
13 | Out | Select | Xflag/Data1,5 | Xflag |
| |
|
| |||||
|
|
|
|
|
|
|
14 | In | — | HostBusy | HostBusy |
|
|
|
|
|
|
|
|
|
15 |
| — | — | — |
|
|
|
|
|
|
|
|
|
16 |
| Signal GND | Signal GND | Signal GND |
|
|
|
| |||||
|
|
|
|
|
|
|
17 |
| Frame GND | Frame GND | Frame GND |
|
|
|
|
|
|
|
|
|
18 | OUT | +5V | +5V | +5V |
|
|
|
|
|
|
|
|
|
19~30 |
| Twisted Pair Return | Twisted Pair Return | Twisted Pair Return |
|
|
|
|
|
|
|
|
|
31 | In | nInit | nInit | nInit |
|
|
|
|
|
|
|
|
|
32 | Out | nFault | nDataAvail/Data0,4 | nDataAvail |
|
|
|
|
|
|
|
|
|
33 |
| External GND | — | — |
|
|
|
|
|
|
|
|
|
34 | Out | Compulsion Status | — | — |
|
|
|
|
|
|
|
|
|
35 |
| — | — | — |
|
|
|
|
|
|
|
|
|
36 | In | nSelectIn | 1284Active | 1284Active |
|
|
|
|
|
|
|
|
|
This connector mates with an
Amphenol
Parallel interface connector (printer side)
– 104 –
