Copyright © 2013 IBASE Technology Inc. All Rights Reserved.
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IBASE Technology Inc.
CN8: DB9 Connector (COM1)
Signal Name
Pin #
Pin #
Signal Name
DCD, Data carrier detect
1
6
DSR, Data set ready
RXD, Receive data
2
7
RTS, Request to send
TXD, Transmit data
3
8
CTS, Clear to send
DTR, Data terminal ready
4
9
RI, Ring indicator
GND, ground
5
10
Not Used
COM1 is jumper-less for RS-232, RS-422 and RS-485 and is to be configured with BIOS Selection.
[
Pin #
Signal Name
RS-232
R2-422
RS-485
1
DCD
TX-
DATA-
2
RX
TX+
DATA+
3
TX
RX+
NC
4
DTR
RX-
NC
5
Ground
Ground
Ground
6
DSR
NC
NC
7
RTS
NC
NC
8
CTS
NC
NC
9
RI
NC
NC
10
NC
NC
NC
CN9: Micro SD (3.3V) Connector
SW1: Power Switch
