Chapter 2

Serial Port Connectors: COM A & COM B

The mainboard has two 9-pin male DIN connectors for serial port COM A and COM B. You can attach a serial mouse or other serial devices.

1

2

3

4

5

6 7 8 9

9-Pin Male DIN Connectors

Pin Definition

PIN

SIGNAL

DESCRIPTION

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

Ground

6

DSR

Data Set Ready

7

RTS

Request To Send

8

CTS

Clear To Send

9

RI

Ring Indicate

Joystick/Midi Connector

You can connect a joystick or game pad to this connector.

Audio Port Connectors

Line Out is to connect speakers or headphones. Line In is a connector for external CD player, Tape player or other audio devices. Mic is used to connect to a microphone.

Line Out Line In MIC

The mainboard provides 6-channel audio support and can turn the TIP rear audio connectors from 2-channel to 4-/6-channel audio. For more information, refer to Appendix A. Using 4-/6-channel Audio

Function.

2-12

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Premio Computer Aries/Centella manual Serial Port Connectors COM a & COM B, Joystick/Midi Connector, Audio Port Connectors