Appendix A CENTRONICS PARALLEL INTERFACE
1)Connector
•Printer side :
Type
•Cable side :
Type
2) Cable
• Cable length : 6 ft (1.8 m) max.
(a shielded cable composed of twisted pair wires is recommended for noise prevention)
Note: Cable is not provided.
3) Table of parallel I/F signals
Pin No. | Signal name | Signal direction | Compatible | Nibble | ECP | |||||||
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1 |
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| → PR | nStrobe | Host Clk | Host Clk |
DATA STROBE | ||||||||||||
2~9 | DATA BIT - n | → PR |
| Data 1 (LSB) ~ 8 (MSB) | ||||||||
10 |
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| ← PR | nAck | Ptrclk | PeriphClk | |||
| ACKNOWLEDGE |
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11 | BUSY | ← PR | Busy | PtrBusy | PeriphAck | |||||||
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12 | PAPER END | ← PR | Perror | AckDataReq | nAck Reverse | |||||||
13 | SELECT | ← PR | Select | Xflag | Xflag | |||||||
14 |
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| → PR | nAutoFb | HostBusy | HostAck | ||||
| AUTO FEED |
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15 | - |
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| - |
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16 | 0V | - |
| Signal Ground |
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17 | CHASSIS GROUND | - |
| Chassis Ground |
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18 | +5V | ← PR |
| +5V Supply (50mAm) | ||||||||
19 | 0V | - |
| Signal Ground |
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20~27 | 0V | - |
| Signal Ground |
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28 | 0V | - |
| Singal Ground |
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29 | 0V | - |
| Signal Ground |
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30 | 0V | - |
| Signal Ground |
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31 |
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| → PR | nlnit | nlnit | nReverseRequest | |||||
| INPUT PRIME |
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32 |
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| ← PR | nFault | nDataAvail | nPeriphRequest | ||||
FAULT | ||||||||||||
33 | 0V | - |
| - |
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34 | - |
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| - |
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35 | HILEVEL | ← PR |
| High Level |
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36 |
| → PR | nSelectln | 1284 Active | 1284 Active | |||||||
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•Connector pin arrangement
40930701TH DRAFT Vesion | 185 / |
