Appendix C: Parallel Interface
The
Table of Connection Signals for Each Mode
Pin No. | Direction | Compatibility Mode Signal Name | Nibble Mode Signal Name |
1 | In | nStrobe | Host Clock |
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2 | In/Out | Data0 | Data0 |
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3 | In/Out | Data1 | Data1 |
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4 | In/Out | Data2 | Data2 |
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5 | In/Out | Data3 | Data3 |
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6 | In/Out | Data4 | Data4 |
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7 | In/Out | Data5 | Data5 |
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8 | In/Out | Data6 | Data6 |
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9 | In/Out | Data7 | Data7 |
10 | Out | nAck | PtrClk |
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11 | Out | Busy | PtrBusy/Data3,7 |
12 | Out | PError | AckDataReq/Data2,6 |
13 | Out | Select | Xflag/Data1,5 |
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14 |
| — | HostBusy |
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15 |
| — | — |
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16 |
| Signal GND | Signal GND |
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17 |
| Frame GND | Flame GND |
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18 | OUT | +5V | +5V |
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19~30 |
| Twisted Pair Return | Twisted Pair Return |
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31 | In | nInit | nInit |
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32 | Out | nFault | nDataAvail/Data0,4 |
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33 |
| External GND | — |
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34 |
| — | — |
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35 |
| — | — |
36 | In | nSelectIn | 1284Active |
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This connector mates with an
Amphenol
Parallel interface connector (printer side)
Note:
1)The first letter “n” of each signal name indicates that the signal is active “L”. If any one of the above signals is not available, bidirectional commu- nication cannot be accomplished.
2)In interfacing signals, be sure to use
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