User`s manual

PICO121 AMD G-Series Embedded SoC Pico-ITX Board
AX93277 I/O Board 31
COM1
COM2
3.5.2 System Power Switch (CN5)
This switch is for turning on/off the system power.
3.5.3 COM Connector (CN6)
CN6 is a double-deck DB-9 connector for COM1 (lower) and COM2 (upper). COM1
comes with power capability on DCD and RI pins by setting jumpers (see section 3.4.1).
The pin assignments of RS-232/RS-422/RS-485 are listed in table below. If you need
COM1 port to support RS-422 or RS-485, please refer to BIOS setting in section 6.4.
COM1:
COM2:
3.5.4 Audio Jack (CN8)
This is audio jack with HD audio support. Install audio driver, and then attach audio
devices to CN8.
Function
Description
On
Turn on/off system
Off
Keep system status
Pin
RS-232
RS-422
RS-485
10
DCD
TX-
Data-
11
RXD
TX+
Data+
12
TXD
RX+
N.C
13
DTR
RX-
N.C.
14
GND
No use
No use
15
DSR
No use
No use
16
RTS
No use
No use
17
CTS
No use
No use
18
RI
No use
No use
Pin
Signal
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
Pin Color
Signal
Green
Line-out
Pink
MIC-in