Function
BOOT_CONFIG[0]
DMIC_DISC_N
FORCE_SW_UART
3.8.2 12V DC Jack – J21
The development kit can be powered by connecting the bundled 12V DC power supply to the power
supply jack, J21, on the carrier board. The development kit is configured to be powered by the 12V
DC by default. Please refer to Section 3.8.3 and Section 3.8.6 for power source configuration setting.
3.8.3 SOM Power Source Selection Switch – S300
Switch S300 allows the user to power the SOM using either the 12V DC power supply or a Lithium
battery. See table below for selecting the correct power source for the SOM.
Switch location
SOM power source
Open-Q™ 212A Development Kit User Guide Version 1.0
DIP
Switch
S10-6
APQ_GPIO_76 / BOOT_CONFIG[0]
(F)
OFF (Default): Low, watchdog
enabled ON: High, watchdog disabled
S10-7
DMICs disable
(G)
OFF (Default): Disable DMICs
ON: Enable DMICs. See Section 3.8.27
S10-8
Debug Console UART selection
(H)
OFF (Default): Debug console
selected
ON: Enable DMICs. See Section 3.8.27
Figure 4 12V DC Power Jack (J21)
Table 4 Power Source Selection
Up (Illustrated in figure below)
12V DC
Copyright Intrinsyc Technologies Corporation
Description
Battery (through battery connector J300)
16
Notes
Watchdog
DMICs privacy control
Connects USB cable to J22
on carrier board to use debug
console
Down
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