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UCD3138A: Fusing GUI

user4357894
Intellectual 260 points
Part Number: UCD3138A

Dear TI,

As I download FW in ucd3138A, two yellow lines appear at same time on GUI

No PMBUS devices responds to a DEVICE_ID request;

No ROM detected: read block error while getting ROM version

 then I click DEVICE_ID on GUI, it can find.

 

What does it mean? what condition will be like this?

Program can still run in Flash, why appear No PMBUS devices responds to a DEVICE_ID request?

 

Best Wishes

LEI

  • 0
    TI__Genius 17090 points

    I have seen this myself before.  I've never debugged it, because since it can find the device ID from the main GUI, it's not a show stopper.

    I suspect that it's either:

    1. some other message that's not supported other than device ID that the read after download uses but the main GUi doesn't

    or

    2. The PMBus doesn't start up quite right, it needs to NACK once to get it right?

    I'd suggest using the SMBUS/I2C activity log on the GUI to see what is happening in detail.  

    You could also try unchecking the scan for device after program is executed button on the download and see if the device ID scan on the main screen works the first time.

    I assume you are using the device GUI, right, not fusion designer?

    If you need to look with a scope to see what's happening, use the SMBus/I2C tab on the device GUI, and send a read block command FD to the address of your device.  That way you can see what is happening directly.  The DEVICE ID sends that command to all addresses, looking to see what's out there, and it's going to be hard to trigger the scope.  

  • 0
    TI__Expert 4040 points

    Hello,

    Our GUI tool is called Fusion Digital Power Studio and not Fusion Digital Power Designer.  So kindly ensure you have downloaded the correct tool from here:

    www.ti.com/.../FUSION-DIGITAL-POWER-STUDIO

    There is currently no offline mode for the device GUI.

    Amiel

  • 0 in reply to Ian Bower
    Intellectual 260 points

    Dear Lan,

    Thank you for you kind reply, I will check according your advice.

    I still confused whether this kind of Fusing is successful or not  with two yellow lins appear?

    Is that means GUI display incorrect or download failed  (having some other problem like trigger back_door )?

    If download success, the program run in FLASH, Why it go to ROM?  onlychip reset or back-door order will let it  go to ROM? right? 

    If chip perform reset order ,why not successful just showing NO ROM detected?

    I am not clear about this,please share you advice,thanks!

    Best Wishes

    LEI

  • 0
    TI__Genius 17090 points

    Normally, if it doesn't respond to either, it means that the code is running in flash, but the PMBus isn't responding.

    Since you say you can go to the main gui screen and find the device ID, that means that the PMBus is just responding late for some reason, as I described in the first message.  

  • 0 in reply to Ian Bower
    Intellectual 260 points

    Dear Lan,

    Thanks a lot for you kind help!

    Best Wishes

    LEI