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AM3715EVM board Host USB function

embedded　linux beginner
Prodigy 50 points

Other Parts Discussed in Thread: AM3517, AM3715

Hello,

 

Question is the USB HOST function of AM3715EVM board.

When the circuit of USB3320 is seen, I think USB OTG function.

In LinuxSDK, do it function as USB HOST?

Or, do it function as HOST of USB OTG?

 

 

Thanks,

  • 0
    TI__Guru 64015 points

    Are you using the Mistral OMAP EVM Main Board with AM37x processor module?

     

    If so, the USB3320 is connected to port 2 of the EHCI USB controller.

     

    The EHCI USB controller only operates in host mode.

     

    The OTG USB controller is connected to an ISP1507 and can operate as USB host, USB device, or USB OTG dual-role device.

     

     

    Regards,

    Paul

  • 0 in reply to peaves
    Prodigy 50 points

    I'm sorry. 　mistake has been found.

    AM3715 -> AM3517 EVM

    the USB3320 is connected to port 1 of the EHCI USB controller.

    but, The resistance(R185) of the USB3320 Vbus pin is 1k Ohrm. 

    (1k : USB OTG

     10k: USB host or device)

    *attached :USB3320 circuit diagram

    thank you regards,