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UCD9081EVM: UCD9081EVM

Guru 13485 points
Part Number: UCD9081EVM
Other Parts Discussed in Thread: UCD9081,

 

I powered up the EVM, but the EVM GUI SW does not recognize the EVM.

 

 

 

  • The adapter is default to 400kHz clock, but UCD9081 only supports 100kHz clock. You will need to open a Fusion Digital Power Designer software, and change the adapter clock to 100kHz, then open the UCD9081 GUI, and it should recognize the device.

  • Thans. See below feedback I got:

    This looks like a very complicated GUI… I don’t see why I need to be the one to learn TI’s programming scheme to just change the bus speed from 400 kHz to 100 kHz. Please have TI provide me with more detailed instructions…

    • Do I need to create my own new “script”
    • Do I begin by “Add Device”
    • ???
    • Please also note, that after I connect the USB Interface Adapter to EVM and run the device scanner, it responds with “no devices found”

  • Thans. See below feedback I got:

    This looks like a very complicated GUI… I don’t see why I need to be the one to learn TI’s programming scheme to just change the bus speed from 400 kHz to 100 kHz. Please have TI provide me with more detailed instructions…

    • Do I need to create my own new “script”
    • Do I begin by “Add Device”
    • ???
    • Please also note, that after I connect the USB Interface Adapter to EVM and run the device scanner, it responds with “no devices found”

  • This is a wrong GUI. Fusion Digital Power Designer GUI can be downloaded from the below page:
    www.ti.com/.../fusion_digital_power_designer

    Connect the adapter to computer, do not attach any device to the adapter, launch the Fusion Digital Power Designer GUI. On the startup interface, user can select clock speed and other settings for the adapter.
  • Hi Zhiyuan,

    I am using a new EVM, and the correct Fusion Design SW you sent me the link for, but I am still getting the same error.

    Please assist me with other suggestions.

    Thank you,

    Michael Mondrow

  • Sorry for the confusion.

    UCD9081 requires the dedicated UCD9081 GUI. But since the USB adapter default setting is 400kHz, you need to first go to Fusion GUI to change adapter clock to 100kHz (one time set up), then go back to UCD9081 GUI to communicate with the EVM. 

    BTW, UCD9081EVM require external power. Also, you can disable Packet Error Checking and try different pullup resistor values for CLOCK and DATA. UCD9081EVM has built-in 10kohm pullup.

  • can we get IBIS model for UCD9081?
  • Customer trying to use Ti’s UCD9081 EVM, without success.

    After further investigation, the SCL, SDA lines seems to be stack at high, and the computer does not query the component.

    Is it possible that the USB Interface Adapter needs a new firmware ???
  • is this a new USB-to-GPIO dongle? maybe unplug and plug the usb cable or reboot your PC.
    you can install the Fusion digital power designer from www.ti.com and refer section 2.2 of www.ti.com/.../slvub51.pdf to download the FW.

    Regards

    Yihe