2. Bus interface
(1) Connector |
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Connector part number | : | ||||||||||||||||
Mating connector part number | : | ||||||||||||||||
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(2) Connector pin assignment |
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No. |
| Signal | I/O |
| Contents |
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| Signal | I/O | Contents | ||||||
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1 |
| ALE | O | Address latch |
| 2 |
| BRD | — | Data read | |||||||
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3 |
| BWR | — | Data write |
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| 4 |
| READY | — | Data access ready | ||||||
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5 |
| HACK | — | Hold acknowledge |
| 6 |
| HRQ | — | User hold request input | |||||||
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7 |
| MCRC | — |
| 8 |
| CLK | O | System clock | ||||||||
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9 |
| PCPAK1 | O | Common RAM reading completion | 10 |
| ATF | I | Automatic paper loading | ||||||||
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11 | PCPSD1 | I | Common RAM reading request | 12 |
| PRON | O | Printer operating | |||||||||
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13 | RST | I | Hard reset |
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| 14 |
| GND | — | Ground | |||||||
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15 | DB00 | I/O | External address/Data bus 0 | 16 |
| DB01 | I/O | External address/Data bus 1 | |||||||||
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17 | DB02 | I/O | External address/Data bus 2 | 18 |
| DB03 | I/O | External address/Data bus 3 | |||||||||
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19 | DB04 | I/O | External address/Data bus | 4 | 20 |
| DB05 | I/O | External address/Data bus 5 | ||||||||
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21 | DB06 | I/O | External address/Data bus | 6 | 22 |
| DB07 | I/O | External address/Data bus 7 | ||||||||
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23 | AB08 | O | External address bus 08 |
| 24 |
| AB09 | O | External address bus 09 | ||||||||
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25 | AB10 | O | External address bus 10 |
| 26 |
| AB11 | O | External address bus 11 | ||||||||
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27 | AB12 | O | External address bus 12 |
| 28 |
| AB13 | O | External address bus 13 | ||||||||
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29 | AB14 | O | External address bus 14 |
| 30 |
| AB15 | O | External address bus 15 | ||||||||
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31 | AB16 | O | External address bus 16 |
| 32 |
| AB17 | O | External address bus 17 | ||||||||
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33 | AB18 | O | External address bus 18 |
| 34 |
| AB19 | O | External address bus 19 | ||||||||
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35 | AB20 | O | External address bus 20 |
| 36 |
| AB21 | O | External address bus 21 | ||||||||
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37 | AB22 | O | External address bus 22 |
| 38 |
| AB23 | O | External address bus 23 | ||||||||
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39 | RAM2 | O | Common RAM access |
| 40 |
| INPRM | I | Reset | ||||||||
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Notes:
-Symbol " " means a negative logical signal.
-"I" or "O" meas a signal direction from the interface board side.
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