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Board Layout

Chapter 3

Embedded and Industrial Computing

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

port through the D-SUB9 connector.

SCT1, SCT2: Select COM2 Protocol Setting

RS-232

RS-422

RS-485

COM1 TYPE SCT2 SCT1

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

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

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

JP1, JP2: Select COM1 and COM2 power : The Pin No.

9 of RS-232 can be altered to supply power. JP1 and JP2

are used to select the power voltage for COM1 and COM2

respectively.

Jumper Settings

Serial-ATA Connector (SATA1, SATA2): It is for connecting

a 2.5’’ harddisk to be served as your system’s storage. It

can support SATA II which features Data transfer rates up

to 3.0 Gb/s (300 MB/s).

4-pin Serial-ATA Power Connector (J3): It is for

connecting the SATA power cord.

Power eSATA Port (5V, EUSB1): A Power external SATA

port supports hot plugging of SATA II disc. It was provided

by the PCIe to SATA controller: JMB362 which connects

to the ICH8M through the PCIe interface. It can support

USB2.0 as well as eSATA transmission.

RS-232 Serial Port (COM1): It is a RS-232 port through

the D-SUB9 connector.

Pin No. Pin Name Pin No. Pin Name

1 DCD 6 DSR

2 RXD 7 RTS

3 TXD 8 CTS

4 DTR 9 RIA

5 GND

Pin No. Function

1 GND

2 TX0_+

3 TX0_-

4 GND

5 RX0_-

6 RX0_+

7 GND

RS-232 Pin 9 Function JP1, JP2

+5V 1-2

+12V 3-4

RI (Default) 5-6

LEB-7105

Pin No. Function

1 +5V

2 GND

3 GND

4 +12V

1 2 3 4 5 6 7

4 3 2 1

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

S7 S6 S5 S4 S3 S2 S1

Pin No. Function Pin No. Function

1 GND 1 +5V

2 TX1_+ 2 USB8+

3 TX1_- 3 USB8-

4 GND 4 GND

5 RX1_-

6 RX1_+

7 VCC5

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