User`s manual

PICO822 Intel
®
Atom
TM
E620T/E680T All-In-One Pico-ITX Board
Board and Pin Assignments 17
2.5.5 COM and Audio Connector (CN7)
The CN7 is a 40-pin connector for two COM (RS-232), GPIO (digital I/O) and audio
interface.
The voltage range of GPIO0~GPIO6 is 0~+5V and the voltage range of GPIO8 is
0~+3.3V.
Pin 31 and pin 32 are for auto power on jumper. Once it is enabled, the system will be
automatically power on without pressing soft power button. If it is disabled, it is
necessary to manually press soft power button to power on system.
Pin
Signal
Pin
Signal
1
DCD1
2
DSR1
3
RXD1
4
RTS1
5
TXD1
6
CTS1
7
DTR1
8
RI1
9
COM_GND
10
DSR2
11
DCD2
12
RTS2
13
RXD2
14
CTS2
15
TXD2
16
RI2
17
DTR2
18
COM_GND
19
GND
20
GND
21
GPIO5
22
GPIO0
23
GPIO6
24
GPIO1
25
GPIO8
26
GPIO2
27
SMBus_DATA
28
GPIO3
29
SMBus_CLK
30
GPIO4
31
AUTO_BUTTON#
32
AUTO_BUTTON
33
LINE_IN_L
34
Audio_GND
35
LINE_IN_R
36
LINE_OUT_R
37
Audio_GND
38
LINE_OUT_L
39
MIC
40
Audio_GND
Input Mode (Default)
Output Mode
GPI0
High:5VSB; Low:0V
GPO0
High:3.3V; Low:0V
GPI1
High:5VSB; Low:0V
GPO1
High:3.3V; Low:0V
GPI2
High:5VSB; Low:0V
GPO2
High:3.3V; Low:0V
GPI3
High:5VSB; Low:0V
GPO3
High:3.3V; Low:0V
GPI4
High:5VSB; Low:0V
GPO4
High:3.3V; Low:0V
GPI5
High:5VSB; Low:0V
GPO5
High:3.3V; Low:0V
GPI6
High:5VSB; Low:0V
GPO6
High:3.3V; Low:0V
GPI8
High:3.3V; Low:0V
GPO8
High:3.3V; Low:0V
Function
Setting
Disable auto power on (Default)
Open
Enable auto power on
Close