1.2 Parallel Communications Adapter Specifications
Table
No. |
| Signal line | I/O | Function | No. |
| Signal line | I/O | Function | |||||
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1 |
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| I | Data strobe signal | 19 |
| GND | - | Signal grounding | |||
DSTB | ||||||||||||||
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2 |
| DATA 0 | I/O | Data | 20 | GND | - | Signal grounding | ||||||
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3 |
| DATA 1 | I/O | Data | 21 | GND | - | Signal grounding | ||||||
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4 |
| DATA 2 | I/O | Data | 22 | GND | - | Signal grounding | ||||||
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5 |
| DATA 3 | I/O | Data | 23 | GND | - | Signal grounding | ||||||
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6 |
| DATA 4 | I/O | Data | 24 | GND | - | Signal grounding | ||||||
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7 |
| DATA 5 | I/O | Data | 25 | GND | - | Signal grounding | ||||||
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8 |
| DATA 6 | I/O | Data | 26 | GND | - | Signal grounding | ||||||
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9 |
| DATA 7 | I/O | Data | 27 | GND | - | Signal grounding | ||||||
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10 |
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| O | Acknowledge signal | 28 |
| GND | - | Signal grounding | ||||
ACK | ||||||||||||||
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11 |
| BUSY | O | Busy signal | 29 |
| GND | - | Signal grounding | |||||
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12 |
| PE | O | No paper | 30 |
| GND | - | Signal grounding | |||||
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13 |
| SLCT | O | Select signal, output | 31 |
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| I | Reset signal | ||
| INIT | |||||||||||||
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14 |
| NC | - | Unused | 32 |
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| O | Error signal | ||
| ERR | |||||||||||||
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15 |
| NC | - | Unused | 33 |
| NC | - | Unused | |||||
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16 |
| GND | - | Signal grounding | 34 |
| NC | - | Unused | |||||
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17 |
| FG | - | Frame grounding | 35 |
| NC | - | Unused | |||||
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18 |
| +5 V | O | Power supply signal | 36 |
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| I | Select signal, input | ||
| SLCTIN | |||||||||||||
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7
