Specifications

CHAPTER 2CHAPTER 2

CHAPTER 2

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2-32

2.9 Serial Port Connectors: COM A and COM B2.9 Serial Port Connectors: COM A and COM B

2.9 Serial Port Connectors: COM A and COM B

The mainboard has two 9-pin male DIN connectors for serial port COM A

and COM B. These ports are 16550A high speed communication port that

send/receive 16 bytes FIFOs. You can attach a mouse or a modem cable

directly into this connector.

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)

PIN DEFINITION

1 2 3 4 5

6 7 8 9

COM A

Serial Port (9-pin Male)

COM B