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TUSB8041: USB3.0 and USB2.0 downstream

Part Number: TUSB8041

Tool/software:

Hello,

We are designing a hub from an usb3 host. To this hub there will be 4 modem connected permanently, two of them drived through USB3 and the other two through USB2.

My questions are:

       - Is this possible? (two usb3 and two usb2 at the same time...)

      - if modems are externally powered, what tusb8041 signals should we connect? (i mean, is it necesary to use PWRCTRL, OVERCUR, GANGED/SMBA2/HS_UP, FULLPWRMGMTz/SMBA1/SS_UP,  PWRCTL_POL...?)

Thanks in advance.

J.M.E..