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Board Layout

Chapter 3

Embedded and Industrial Computing

SCT1, SCT2: Select COM1 Protocol Setting

RS-232

RS-422

RS-485

Switch

Protocol

SCT1 SCT2

RS-232 (default) 1-5, 2-6, 3-7, 4-8 1-2

RS-422 5-9, 6-10, 7-11, 8-12 3-4

RS-485 5-9, 6-10, 7-11, 8-12 5-6

SCT3, SCT4: Select COM2 Protocol Setting

Jumper Settings

3G Audio Connector (COM1): a D-sub 9 male connector

for 3G Audio

Line-out Audio Jack (COM2): a D-sub 9 male connector

for HD Audio

Note: The driver for the VGA and Audio ports

should be installed with the following order:

Chipset INF->Graphic->Audio

COM1 RS-232 Serial Port(COM1): a RS-232/422/485 port

through the D-SUB9 connector.

RS-232/422/485 Serial Port(COM2): a RS-232/422/485

port through the D-SUB9 connector.

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Pin No. Function Pin No. Function

1 3G_MIC_R 6 3G_MIC_L

2 N/A 7 N/A

3 3G_EAROR 8 GND_AUD1

4 3G_EAROL 9 GND_AUD1

5 N/A 10 N/A

LEK-IOA6 Board

Pin No. Pin Name

RS-232 RS-422 RS-485

1 DCD TXD- DATA-

2 RXD TXD+ DATA+

3 TXD RXD+

4 DTR RXD-

5 GND

6 DSR

7 RTS

8 CTS

9 RI

Pin No. Pin Name

RS-232 RS-422 RS-485

1 DCD TXD- DATA-

2 RXD TXD+ DATA+

3 TXD RXD+

4 DTR RXD-

5 GND

6 DSR

7 RTS

8 CTS

9 RI

SCT2

SCT1

SCT3

SCT4

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Pin No. Function Pin No. Function

1 AUDIO_OUT_R 6 AUDIO_OUT_L

2 N/A 7 N/A

3 AMPOUT_R 8 GND_AUD

4 AMPOUT_L 9 GND_AUD

5 N/A 10 N/A

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 47 48

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