Com2 Connector (Com2); Cmos Battery Connector (Bat1) - AXIOMTEK CAPA841 User Manual

2.4.19

COM2 Connector (COM2)

This connector is equipped with +5V level power capability on DCD and +12V level on
RI by setting JP11 (see section 2.3.8). The pin assignments of RS-232/RS-422/RS-485
are listed in table below. If you need COM2 port to support RS-422 or RS-485, please
refer to BIOS setting in section 4.4.
Pin RS-232
1 DCD
2 DSR
3 RXD
4 RTS
5 TXD
6 CTS
7 DTR
8 RI
9 GND
10 No use
2.4.20

CMOS Battery Connector (BAT1)

This connector is for CMOS battery interface.
Pin
1
2
Board and Pin Assignments
RS-422 RS-485
TX- Data-
No use No use
TX+ Data+
No use No use
RX+ No use
No use No use
RX- No use
No use No use
No use No use
No use No use
Signal
+3.3V
GND
CAPA841/842 Capa Board
1
1
23