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Original question:

TUSB7340: going obsolete?

TUSB7340: Alternative Device...? Or Availability?

Darren (FAE)
Expert 5483 points
Part Number: TUSB7340
Other Parts Discussed in Thread: TUSB7320, AM6528

I have a customer interested in a PCIe-USB device. They asked after the TUSB7340, but from other E2E posts it looks like it is not recommended for new designs, as it was designed for the preliminary xHCI specification (0.96), and doesn't support 1.1 or 1.2; thus the customer can't obtain a USB3 logo for their device. Correct?

It was also mentioned (2018) there was no device scheduled to replace this.

Is that still true? Are there any other devices with PCIe - USB functionality...? Or another way to implement this using current devices?

(I am really unfamiliar with USB/PCIe standards atm, sorry)

Thanks,

Darren

  • 0
    TI__Guru**** 151810 points

    sorry, there is no device to replace TUSB7340 . But you still can use it with limited support from us.

  • 0
    TI__Guru 60870 points

    Hi Darren,

    A PCIe-USB device implies a USB XHCI host controller, and TI has no plans for a next generation host controller device at this time.  An XHCI controller function cannot be implemented using discrete devices, it requires an single chip solution.

    The existing TUSB7340 and TUSB7320 devices are NRND due to non-compliance to the latest standards, published errata and extremely limited driver / applications support.

    Regards,

    JMMN

  • 0 in reply to JMMN
    TI__Expert 5483 points

    Hi JMMN,

    That clears it up for me very well.

    Do you have an opinion on say the AM6528 processor? It has both PCIe and USB3.x capability, so could act as the PCIe to USB converter...

    But I guess it wouldn’t be real time Data transfer, and the device cost is probably far too high just for this...But is it theoretically an option in your opinion?

  • 0 in reply to Darren (FAE)
    TI__Guru 60870 points

    Hi Darren,

    I recommend posting on the Sitara forum.  I don't have enough background with that device to confirm if it will work or not.  Is the application intended as a USB device or a USB host?  

    Regards,

    JMMN