SOM-9X20 User Manual
31
A.4.5.
Power Button
The SOMDB2 carrier board comes with a power button on the back panel which allows the user to turn the
system on and off.
Table 23:
Power button behavior description
A.4.6. DC-In Jack
The SOMDB2 carrier board comes with a DC-in jack that carries a 12V DC external power input. The
specification and pinouts of the power DC-in jack are shown below.
Table 24:
DC-in jack pinouts
Table 25:
DC-in jack specification
Pin
Signal
1
VDD120_IN
2
GND
3
GND
Physical Specification
Outer Diameter 6.0mm
Inner Diameter 2.0mm
Barrel Depth
8.2mm
Electrical Specification
Input Voltage
+12V
Figure 38:
Power button diagram
1
2
Figure 39:
DC-in jack diagram
2.0mm
6.0mm
Figure 40:
DC-in jack specification diagram
Power Button behavior
Suspend/Resume System
Quickly press the power button once to suspend. While in suspend
mode quickly press once to resume.
Pop-up power control menu
Occurs when the power button is pressed for longer than 3 seconds.
Restart
Occurs when the power button is pressed for longer than 10 seconds.