User Manual version 2503

4.1.5.10. COM3

COM 3 is an internal RS-232 reserved for touchscreen. Its corresponding pin assignment is listed as below;

Pin #

Signal

Pin #

Signal

1

DCD

2

DSR

3

RXD

4

RTS

5

TXD

6

CTS

7

DTR

8

RI

9

GND

10

VCC

4.1.5.11.CD1: CD Audio IN

Pin # Signal

1 Left channel

2 CD GND

3 CD GND

4 Right channel

4.1.5.12.IR1: IR/CIR Connector

IR

Pin # Signal

15V

2NC

3IRRX

4GND

5IRTX

6CIRRX

LIBRA 120 III (PC620 Intel 815E)

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March Products 120 III (PC620) user manual Dcd Dsr Rxd Rts Txd Cts Dtr Gnd Vcc