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USB MicroDev options

USB_OTG* lines are shared between: display touch screen, umts controls, and expander connector. You must use USB lines in mutual exclusion. For example if you use for display touch screen you can't use for UMTS or expander connector.

Available options:

  1. By default in a MicroDev carrier without UMTS module mounted the USB_OTG* lines are used for display touch screen options.
  2. In option 1, if you use USB_OTG* in expander connector, you must remove (R24 and R41) and you must mount R26 and R43 with 0 Ohm resistors.
  3. By default in a MicroDev carrier with UMTS module mounted the USB_OTG* lines are used for UMTS module controls.

20 March 2018

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