Boot Switch configure

We can configure the boot mode or the USB OTG mode by configure the SW3 on the iBOX/x4412 board.

Switch SW3
Pin 1 2 3 4
Pin define OM5 OM3 OM2 EINT2
ON VCC VCC VCC GND
OFF GND GND GND VCC

Boot mode configure

Exynos4412 can boot the system by eMMC(Storage Chips On the x4412/iBOX board) and SD Card(Slot on the x4412/ibox).

You Can configure the Switch SW3 to boot from eMMC or SD card.

Switch SW3
Pin 1 2 3 Notice
Pin define OM5 OM3 OM2  
eMMC boot x 1 0 Boot from eMMC firstly
SD Card boot 0 0 1 Boot from SD Card firstly

"0" means Set the SW3 to OFF, "1" means set the SW3 to ON, "X" means not need to configure.

USB OTG Configure

The Pin4 of the Switch SW3 is the OTG configure pin.

Pin4 on SW3 Function
Set to "ON" Configure the USB OTG to USB HOST function
Set to "OFF" Configure the USB OTG to USB Device function


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