Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
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Jtag chain broken

TabetS
Beginner
902 Views

When the Jtag debugger is used for debugging, a TDI problem is displayed, and the following information is displayed  "Jtagconfig -d".

Unable to read device chain - JTAG chain broken

Captured DR after reset = (0343B0DD)

Captured IR after reset = ()

Captured Bypass after reset = (0)

Captured Bypass chain = ()

How to solve this problem. Thanks

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Farabi
Employee
880 Views

Hello,


To start debug, we need more information from you:

  1. Is this board you designed? or is this devkit?
  2. how many boards you see this failure?
  3. have you change the USB Blaster II programming cable and see if this can solve the issue?

regards,

Farabi


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NurAiman_M_Intel
Employee
865 Views

Hi,


Can you also share the screenshot of the error?


Regards,

Aiman


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NurAiman_M_Intel
Employee
807 Views

Hi,


Do you have any update for this case?


Regards,

Aiman


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NurAiman_M_Intel
Employee
728 Views

We do not receive any response from you to the previous answer that I have provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you


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