APPENDIX
Appendix D: Serial Interface
D-1. RS-232C Connector
Pin No. | Signal | Function |
|
| I/O |
|
| Pin No. |
| Signal |
|
|
| Function | I/O | ||||||
name |
| direction |
|
| name |
|
|
| direction | ||||||||||||
|
|
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| |||||||||
1 | FG | Frame ground |
|
|
|
| 14 |
|
|
|
| – |
|
|
|
|
| ||||
2 | TXD | Send data |
| OUT |
|
| 15 |
|
|
|
| – |
|
|
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|
| ||||
|
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|
|
| ||
3 | RXD | Receive data |
|
| IN |
|
| 16 |
|
|
|
| – |
|
|
|
|
| |||
|
|
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| ||||
4 | RTS | Request to send | OUT |
|
| 17 |
|
|
|
| – |
|
|
|
|
| |||||
5 | – |
|
|
|
|
|
|
|
| 18 |
|
|
|
| – |
|
|
|
|
| |
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|
|
|
|
|
|
|
| |||
6 | DSR | Data set ready |
| IN |
|
| 19 |
|
|
|
| – |
|
|
|
|
| ||||
|
|
|
|
|
|
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|
|
|
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|
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| |||||
7 | SG | Signal GND |
|
|
|
|
| 20 |
|
|
| DTR |
| Data terminal ready | OUT | ||||||
8 | – |
|
|
|
|
|
|
|
| 21 |
|
|
|
| – |
|
|
|
|
| |
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|
9 | – |
|
|
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|
|
| 22 |
|
|
|
| – |
|
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| |
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|
10 | – |
|
|
|
|
|
|
|
| 23 |
|
|
|
| – |
|
|
|
|
| |
11 | – |
|
|
|
|
|
|
|
| 24 |
|
|
|
| – |
|
|
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| |
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|
| |
12 | – |
|
|
|
|
|
|
|
| 25 |
|
|
|
|
|
|
|
| Reset | IN | |
|
|
|
|
|
|
|
|
|
|
| INIT |
|
|
| |||||||
13 | – |
|
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|
|
| 13 | 12 | 11 | 10 | 9 | 8 |
| 7 | 6 | 5 |
|
| 4 |
| 3 |
| 2 | 1 |
| |
|
|
| 25 | 24 | 23 | 22 | 21 | 20 |
| 19 | 18 | 17 | 16 | 15 |
| 14 |
| ||||
<Viewed from Connector Surface>
– 96 –
