SBC81870 Intel
®
Pentium
®
M w/ DDR/VGA/Dual LAN
Hardware Configuration
15
2.5 COM
PORT
CONNECTOR
COM1:
COM1 Connector
COM1 is fixed as RS-232.
The pin assignment is as follows:
1
6
5
10
COM1
PIN ASSIGNMENT
1 DCDA
2 RXDA
3 TXDA
4 DTRA
5 GND
6 DSRA
7 RTSA
8 CTSA
9 RIA
10 NC
COM2:
COM2 Connector
The COM2 is selectable as RS-232/422/485.
The pin assignment is as follows:
ASSIGNMENT
PIN
RS-232 RS-422
RS-485
1 DCDB TX- TX-
2 RXDB TX+ TX+
3 TXDB RX+ RX+
4 DTRB RX- RX-
5 GND GND GND
6 DSRB NC
NC
7 RTSB NC
NC
8 CTSB
NC
NC
9 RIB
NC
NC
10 NC
NC
NC
1
6
5
10
COM2