20
IB990 User’s Manual
2.5.1
COM1 and COM2 Serial Port (J2)
1
2
19
20
Pin #
Assigment
Pin #
Assigment
1
DCD1
2
DSR1
3
RXD1
4
RTS1
5
TXD1
6
CTS1
7
DTR1
8
RI1
9
Ground
10
NC
11
DCD2
12
DSR2
13
RXD2
14
RTS2
15
TXD2
16
CTS2
17
DTR2
18
RI2
19
Ground
20
NC