
CHAPTER 2 | HARDWARE INSTALLATION |
|
|
2.10 Serial Port Connectors: COM A & COM B
The mainboard has two
1 2 3 4 5 |
6 7 8 9 |
COM A | COM B |
PIN DEFINITION
| PIN | SIGNAL |
|
|
|
|
|
| 1 | DCD(Data Carry Detect) |
|
|
|
|
|
| 2 | SIN(Serial In or Receive Data) |
|
|
|
|
|
| 3 | SOUT(Serial Out or Transmit Data) |
|
|
|
|
|
| 4 | DTR(Data Terminal Ready) |
|
|
|
|
|
| 5 | GND |
|
|
|
|
|
| 6 | DSR(Data Set Ready) |
|
|
|
|
|
| 7 | RTS(Request To Send) |
|
|
|
|
|
| 8 | CTS(Clear To Send) |
|
|
|
|
|
| 9 | RI(Ring Indicate) |
|
|
|
|
|
|
|
|
|