• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 33 subscribers
  • Views 414 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

TUSB 2036 not connecting to windows.

TUSB8044: TUSB8044 not connecting to windows.

hezi nistani
Prodigy 110 points
Part Number: TUSB8044

Hello all,

I made a design with TUSB8044 part as a usb hub in our project.  The problem I'm having is that the part isn't recognized by windows when i plug it in.  All the USB ports are always connected to the chips.

I have attached the Schematic of the hub.

Pls let me know if I need to make any changes/ upload firmware  to make the hub connected to Windows.

Thanks.

  • 0
    TI__Guru 60865 points
    Hello Hezi,

    Can you provide a block diagram for the schematic? It looks like the upstream port of the hub is routed to a standard type B receptacle, both sides of a type C receptacle and a type C switch...that does not seem correct.

    Thanks,
    JMMN
  • 0 in reply to JMMN
    Prodigy 110 points

    Hi JMMN,

    Attached block diagram of the project. 

    We connected the upstream port of the HUB to the standard type B receptacle with 0 ohm resistors and we use it just for system debug - it's not connected for all options together. 

     About the , both sides of a type C receptacle and a type C switch - can you advice that is the right and correct connection it should be ? 

    May be it's the problem that cause the hub not connecting to windows ? 

    8877.HW_block diagram_Description.pdf

  • 0 in reply to hezi nistani
    TI__Guru 64326 points
    Hezi,

    In the board schematic I suggest that you remove R35.x, R36.x, R37.x, (x = [1 - 4]). It seems these resistor are connecting the upstream port on the hub to multiple ports (Type-B and Type-C). Try using the Mux (U9) and always connect to a single port at a time.