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TUSB9261DEMO: Problems encountered in the implementation process

Chongyu Long
Prodigy 160 points
Part Number: TUSB9261DEMO
Other Parts Discussed in Thread: TUSB9261

I am now referring to TUSB9261 Demo, using TUSB9261 chip to make a hard disk box.

But TI's TUSB926x_Burner couldn't recognize the hard drive case I made.

I feel that the problem may be in the following points, would like to consult:

First, what are the problems that should be paid attention to when this chip is designed with Type C port?
1. Apply schematic diagram？
2. Exception handling？
3. The reason that the burner cannot identify？

Second, are chip peripherals such as power management necessary and can they be simplified?

Third, whether the ground pin of the crystal oscillator is connected to the GND of the main power supply (design of the principle diagram of the master crystal oscillator)

Fourth, whether the USB2.0 direct access parameters can be abnormal?

  • 0
    TI__Mastermind 36690 points

    Hi Chongyu,

    I am looking into these questions, as I need to talk with other members of our team for more answers, and will get back to you by EOD 5/13 at the latest.

    Thanks,

    Ryan

  • 0 in reply to Ryan Kitto
    Prodigy 160 points

    Thank you. Looking forward to your reply.

  • 0 in reply to Chongyu Long
    TI__Mastermind 36690 points

    Hi Chongyu,

    Of course. I will let you know.

    Thanks,

    Ryan

  • 0 in reply to Ryan Kitto
    TI__Mastermind 36690 points

    Hi Chongyu,

    Sorry for the wait on this one. I am still trying to get more information, as some of these are finer details of the device that I am not. One questions I have, just to make sure, are you using an EEPROM for storing the TUSB9261 FW, or is there not one present?

    Additionally, what do you mean by abnormal USB2.0 direct access parameters?

    I will do my best to, at the very least, provide you some answers to your questions tomorrow. Sorry about the wait.

    Thanks,

    Ryan

  • +1 in reply to Ryan Kitto
    TI__Mastermind 27925 points

    Hi Chongyu,

    First, what are the problems that should be paid attention to when this chip is designed with Type C port?
    Nothing specific to the chip.  

    Second, are chip peripherals such as power management necessary and can they be simplified?
    By power management do you mean the decoupling caps?  It is recommended to follow the power recommendations in the implementation guide and datasheet.  The device can be sensitive to noise, and if power filtering is not used it could cause failures.

    Third, whether the ground pin of the crystal oscillator is connected to the GND of the main power supply (design of the principle diagram of the master crystal oscillator)
    No, section 7.3.2.1 of the datasheet states "The VSSOSC should not be connected to PCB ground when using a crystal."

    Fourth, whether the USB2.0 direct access parameters can be abnormal?
    I'm not sure what direct access parameters you're referring to.  Do you have any data to show?

    Chongyu Long said:
    But TI's TUSB926x_Burner couldn't recognize the hard drive case I made.

    We may be able to help determine root cause if you can describe the symptoms you are seeing.  What is shown in device manager?  Does your OS recognize the TUSB9261 as a USB device at all?  Have you followed the troubleshooting steps in section 5 in TUSB9260 Flash Burner - User Guide (Rev. D) (ti.com)? 

    Regards,

    Nicholaus