Com And Audio Connector (Cn7) - AXIOMTEK PICO822 User Manual

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.
Pin Signal
1 DCD1
3 RXD1
5 TXD1
7 DTR1
9 COM_GND
11 DCD2
13 RXD2
15 TXD2
17 DTR2
19 GND
21 GPIO5
23 GPIO6
25 GPIO8
27 SMBus_DATA
29 SMBus_CLK
31 AUTO_BUTTON#
33 LINE_IN_L
35 LINE_IN_R
37 Audio_GND
39 MIC
The voltage range of GPIO0~GPIO6 is 0~+5V and the voltage range of GPIO8 is
0~+3.3V.
Input Mode (Default)
GPI0 High:5VSB; Low:0V
GPI1 High:5VSB; Low:0V
GPI2 High:5VSB; Low:0V
GPI3 High:5VSB; Low:0V
GPI4 High:5VSB; Low:0V
GPI5 High:5VSB; Low:0V
GPI6 High:5VSB; Low:0V
GPI8 High:3.3V; Low:0V
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.
Function
Disable auto power on (Default)
Enable auto power on
Board and Pin Assignments
®
PICO822 Intel Atom
Pin Signal
2 DSR1
4 RTS1
6 CTS1
8 RI1
10 DSR2
12 RTS2
14 CTS2
16 RI2
18 COM_GND
20 GND
22 GPIO0
24 GPIO1
26 GPIO2
28 GPIO3
30 GPIO4
32 AUTO_BUTTON
34 Audio_GND
36 LINE_OUT_R
38 LINE_OUT_L
40 Audio_GND
Output Mode
GPO0
GPO1
GPO2
GPO3
GPO4
GPO5
GPO6
GPO8
Setting
Open
Close
TM
E620T/E680T All-In-One Pico-ITX Board
High:3.3V; Low:0V
High:3.3V; Low:0V
High:3.3V; Low:0V
High:3.3V; Low:0V
High:3.3V; Low:0V
High:3.3V; Low:0V
High:3.3V; Low:0V
High:3.3V; Low:0V
17