MSI Fuzzy 945GM2 - Page 31

2-13
Hardware Setup
Serial Port Connector: J2
The J2 is a RS232/422/485 COM port pinheader that connects to serial devices.
Connect to J2
Serial Port Bracket
(Optional)
C
O
M
2
C
O
M
3
C
O
M
4
C
O
M
5
RS232 RS422 RS485
COM2 X V V
COM3 X V V
COM4 V X X
COM5 V X X
V = supported X = not supported
J2
1
25
2 26
PIN SIGNAL PIN SIGNAL
1 422 RXD1# 2 422 RXD2#
3 422 RXD1 4 422 RXD2
5 422 TXD1 6 422 TXD2
7 422 TXD1# 8 422 TXD2#
9 GND 10 GND
11 NDCD3# 12 NDCD4#
13 NSIN3 14 NSIN4
15 NSOUT3 16 NSOUT4
17 NDTR3 18 NDTR4
19 NDSR3# 20 NDSR4#
21 NRTS3 22 NRTS4
23 NCTS3# 24 NCTS4#
25 0V/5V/12V 26 0V/5V/12V
J2 Pin Definition
COM2 COM3
COM4 COM5
Voltage Select Serial Port Serial Port Voltage Select
N/A
JCOMP4
(page 2-17)
N/A
JCOMP5
(page 2-17)