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Device suggestion for embedded OTG hub

Aaron Gorius
Prodigy 10 points
Other Parts Discussed in Thread: TUSB2036, TS3USB221, TS3USB31

I have a single OTG port on my microcontroller subsystem, and need to add an embedded hub to add an embedded/hardwired device. I also need to preserve the capability of the microcontroller to be accessed as a device by an external host... 

I am looking at using the TUSB2036 hub with a bus-buffer controlled by the OTG_ID signal to allow the external host to directly connect to the uC USB device (OTG)

Is there a better solution?

Will the TUSB2036 effectively 'float' it's output if I use the OTG_ID signal as the RSTB input, or should I use OTG_ID to enable/disable the power supply to the TUSB2036?

Thanks

  • 0
    TI__Guru* 76130 points

    Hello Aaron,

    The best solution would be to use a USB switch like the TS3USB221 or the TS3USB31 and also use the switch enable signal to drive the TUSB2036's reset.

    I need to check on the lab how are the outputs of the TUSB2036 when its inputs are floating.

    Regards.