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TUSB8044AEVM: TUSB8044AEVM

Part Number: TUSB8044AEVM


I have the TUSB8044AEVM – Four-port USB 3.2 gen1 x 1 hub with USB billboard evaluation module.

A) I connect devices such as a SCMOS camera to the TUSB8044AEVM USB A-ports and the camera get recognized in device manager however slow frame rate are observed. (used an A-C cable)

B) If I connect the camera directly to the laptop USB A-port (bypassing the TUSB8044AEVM), the camera gets recognized in device manager and slow frame rates are observer. (used an A-C cable)

C) If I connect the camera directly to the laptop USB C-port (bypassing the TUSB8044AEVM), the camera gets recognized in device manager and expected fast frame rates are observed is exactly what we want. (used a C-C active cable)



Lenovo laptop
>Win10 Pro
> Intel core i7-10710U CPU @ 1.10GHz 1.61GHz
> RAM 16G


Are there any drivers needed for TUSB8044AEVM TI Chipset so when I connect to the  TUSB8044AEVM USB A-ports, I can get the fast frame rate like I do for comment C above?

  • Hi Richard,

    Is it possible your USB A to C cable only supports USB 2.0?  Can you use Device Manager or a tool like usbview.exe / USB Device Tree Viewer to verify if the camera is connecting at USB 2.0 speeds or USB 3.0 speeds?

    Regards,

    JMMN

  • Hi JMMN,

    Thanks for getting back.

    The cable is A-C USB3.1 Gen2

    .

    Regards,

    Rich

  • Ok, it looks like it is connecting at the correct speed.  The hub only supports USB 3.2 5G, not 10G.  It the cable used a long one?  It is possible that the traffic rate is slow due to errors, or does the camera initialize at a slower rate?

    Regards,

    JMMN

  • the cables being used is 0.9m between the camera and downstream of hub.

    The cable from the hub upstream to laptop is also 0.9m B-C USB3.1 Gen2.

    Camera initialization is fast rate, issue not seen when directly connected to the A or C port of the laptop without the hub.

    sounds like the bottle neck is hub not supporting the 10G

    Does TI have an alternative device you may recommend that supports the higher speeds and have C-ports for downstream & C-ports for upstream?

    Regards,

    Rich

  • Hi Rich,

    No, TI does not have a 10G hub product.  We do have several products to support Type C applications like muxes / switches and redrivers.

    Based on your original results it sounded like you saw the same issue when connected directly to the host too?  Can you confirm?

    B) If I connect the camera directly to the laptop USB A-port (bypassing the TUSB8044AEVM), the camera gets recognized in device manager and slow frame rates are observer. (used an A-C cable)

    Regards,

    JMMN

  • For 'B'.... slower frame rates but its not our desired result on the A-port.... we do need the faster frame rates same as the C-port that I was getting without  the TUSB8044AEVM in the setup ... the moment I use the TUSB8044AEVM and connect the TUSB8044AEVM to the C-port using my B-C cable, the frame rates drop.

    I'm not too familiar with the  ones you mentioned if you don't mind to send me your best suggestions that we may consider looking into as an alternative: Type C applications like muxes / switches and redrivers.

    Regards,

    Richard

  • Hi Richard,

    I'm linking to our 10G portfolio.  These devices are used to support the flip option of Type C:

    Regards,

    JMMN