TUSB8044A: USB3.0 is not working

Hi Saket:

  Can you send schematic how is hub upstream port connected to? If on the same board, AC caps also needed on SSRX.

Regards

Brian

3240.usb_sch.pdf

Hi Brian,
I have attached the SCH.
Regards,
Saket

Hi Saket:

    It's hub upstream port issue or downstream port issue?

    for downstream port,  how do you  enable Vbus switch? it should be enabled by ID pin of CC controller.

Regards

Brian

Hi Brian,
Now hub is getting detected their was some issue in assembly, but only J14 USB is detecting USB3.0 is their any configuration i need to do, as I tested in 4 seperate boards only same J14 is detecting the USB 3.0.
Regards,
Saket Mishra

:Hi Saket:

   Can you measure VBus voltage on all downstream type-C port when device is connected and  device is  not connected?

   schematic looks same for all downstream ports.

Best

Brian

Hi Brian,
I have tested the voltage on vbus it is 5v, i forgot to mention that USB 2.0 is working on all connecter, but only on J14 USB 3.0 is up that's why i'm asking is their any configuration that i have to do.
Regards,
Saket Mishra

Hi  Saket 

  For Type-C  port, VBus should be off with nothing connected, other wise CC  detection may not  be correct  and USB3 mux/driver may switch in wrong direction.

     You need to use TUSB321 ID signal to control TPS2001.

Best

Brian