User manual

IA31 Motherboard User Manual
14
2.5.5 CON12: D-SUB Dual Output
CON12 is connecter for COM1 and COM2. COM1 is from pin 11 pin to pin 20),
COM2 is from pin 1 to pin10.
2.5.6 CON16: D-SUB Dual Output
The CON16 is COM3 port, support standard RS-232.
Pin No. SYMBOL Pin No. SYMBOL
20
GND
19
GND
18
NRI1A
17
NDTR1A
16
NCTS1A
15
NTXD1A
14
NRTS1A
13
NRXD1A
12
NDSR1A
11
NDCD1A
10
GND
9
GND
8
NRIA
7
NDTRA
6
NCTSA
5
NTXDA
4
NRTSA
3
NRXDA
2
NDSRA
1
NDCDA
Pin
SYMBOL
P
in
SYMBOL
2 NDSR2 1 NDCD2
4 NRTS2 3 NSIN2
6 NCTS2 5 NSOUT2
8 NRI2 7 NDTR1A
10 GND 9 GND
1
3
5
7
9
2
4
6
8
10