User`s manual

SHB103 LAG1156 Full-Size SBC User’s Manual
Jumpers and Connectors
15
2.4.5 COM Port RS-232 Pin Assignment (CN3, CN6)
The serial interface for the board consists of CN3 port
(COM2) support for RS-232, and CN6 (COM1) for RS-
232/RS-422/RS-485.
Pin Signal Pin Signal
1
Data Carrier Detect
(DCD)
2
Data Set Ready (DSR)
3 Receive Data (RXD) 4 Request to Send (RTS)
5 Transmit Data (TXD) 6 Clear to Send (CTS)
7
Data Terminal Ready
(DTR)
8
Ring Indicator (RI)
9 Ground (GND) 10 Disconnect(NI)
2
4
6
1
3
5
7
8
9
10
2.4.6 COM2 RS-422/485 Pin Assignment
COM1 Serial Port 10-pin (Box-header) Connector Pin Assignment
list
Signal Name
Pin #
RS-422 RS-485
1 TX- DATA-
2 No connector No connector
3 TX+ DATA+
4 No connector No connector
5 RX+ No connector
6 No connector No connector
7 RX- No connector
8 No connector No connector
9 GND GND
10 NI NI