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Pinouts
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The figure below illustrates the DB-9 Serial connector.
5 1
9 6
Figure A-4. Serial connector
The table below lists Serial connector pinouts.
Table
Pin |
| Description |
1 | CD | Carrier Detect |
|
|
|
2 | TXD | Transmitted Data |
|
|
|
3 | RXD | Received Data |
|
|
|
4 | DSR | Data Set Ready |
|
|
|
5 | GND | Signal Ground |
|
|
|
6 | DTR | Data Terminal Ready |
|
|
|
7 | CTS | Clear To Send |
|
|
|
8 | RTS | Request To Send |
|
|
|
9 | RI | Unused |
|
|
|
|
| 121 |
|
