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AM3352: high bandwidth of ISO transfer support

Kzk
Genius 5785 points
Part Number: AM3352

Hi,

Does AM335x USB controller support ISO transfer with high bandwidth?

I saw the following description in the TRM (SPRUH73P).
USB Features (P.2557)
- Supports high bandwidth ISO mode

But there is no detailed about the description below.
16.2.8.2.4.3 High Bandwidth Isochronous Transactions: Host Mode (P.2598)
Place Holder: Details to be populated.

Regards,
Kzk

  • 0
    TI__Mastermind 27890 points

    Hello,

    Yes, this device does support high-bandwidth ISO transactions. Our Linux SDK now includes support for same.

    I'll file a bug against the TRM to get this section updated.

  • 0 in reply to -DK-
    Genius 5785 points

    Hi DK,

    -DK- said:

    Yes, this device does support high-bandwidth ISO transactions. Our Linux SDK now includes support for same.

    Thanks for your answer. I can't use Linux due to the boot time.

    Do you think I can develop UVC Host with ISO high-bandwidth transfer for AM335x using PSDK-RTOS or StarterWare? I'm anxious about the insufficient explanations in the TRM to start to develop that.

    I developed UVC Host for C6746 using StarterWare and got images from the USB camera, but the frame rate is insufficient due to not supported ISO high-bandwidth.

    https://e2e.ti.com/support/processors/f/791/p/765740/2831249#2831249

    Please give me some advice.

    Regards,
    Kzk

  • 0 in reply to Kzk
    TI__Mastermind 27890 points
    Hi,
    I'll need to pull in our SW gurus to answer your RTOS question. They've been notified of this thread.
  • 0 in reply to -DK-
    TI__Guru* 95265 points
    Hi,

    Yes, you can develop the UVC host USB driver from Processor SDK RTOS with ISO high-bandwidth transfer. The USB RTOS driver only support MSC and bulk for now, there is no UVC driver supported. You may use what you have for C674x device and then develop code for ISO. The only available document is the AM335x TRM from our side. You may need to look Linux code for reference.

    Regards, Eric