Audio Port Connectors

Hardware Setup

Serial Port Connector: COM A & COM B

The mainboard offers two 9-pin male DIN connectors for serial port COM A and COM B. The ports are 16550A high speed communication ports that send/receive 16 bytes FIFOs. You can attach a serial mouse or other serial devices directly to them.

				Pin Definition

1 2	3	4 5	PIN	SIGNAL	DESCRIPTION
			1	DCD	Data Carry Detect
			1	DCD	Data Carry Detect
			2	SIN	Serial In or Receive Data
			2	SIN	Serial In or Receive Data
			3	SOUT	Serial Out or Transmit Data
			4	DTR	Data Terminal Ready)
			5	GND	Ground
6	7	8 9	5	GND	Ground
6	7	8 9	6	DSR	Data Set Ready
9-Pin Male DIN Connectors			7	RTS	Request To Send
9-Pin Male DIN Connectors			8	CTS	Clear To Send
			9	RI	Ring Indicate

Line Out is a connector for Speakers or Headphones. Line In is used for external CD player, Tape player, or other audio devices. Mic is a connector for

microphones.

MIC

Line In

1/8” Stereo Audio Connectors

Line Out

Note: Details on the application of 6-channel audio can be acquired by installing the CMI8738 Audio Driver on the CD-ROM (enclosed in the product package).

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