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Board Layout

Chapter 3

Embedded and Industrial Computing

Jumper Settings

Microphone-in Audio Jack (MIC1)

Line-out Audio Port (LIN1)

RS-232 Serial Port (COM1~COM4): It is an RS-232 port

through the D-SUB9 connector.

SC1T1/SC2T1/SC3T1/SC4T1: Select COM1/COM2/

COM3/COM4 Pin 9 (ring indicator) signal

Switch Combination

Protocol

SW1/SW4

+5V 1-2

+12V 3-4

RI (default) 5-6

6789

12345

Pin No. Signal Pin No. Signal

1 GND_AUD 2 MIC_OUT_L

3 GND_AUD 4 GND_AUD

5 MIC_OUT_R

Pin No. Signal Pin No. Signal

1 GND_AUD 2 FRONT_OUT_L

3 GND_AUD 4 GND_AUD

5 FRONT_OUT_R

Pin No. Signal

RS-232

1 DCD

2 RxD

3 TxD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

9 RI (ring indicator)

The Main Board

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20 21

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