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DMose2's avatar
DMose2
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5 years ago

sharing access to the internal JTAG interface

I'm implementing Encryption in the JTAG secure mode as per AN556 in my design. I want to have access to the internal JTAG interface to be able to unlock / lock the JTAG interface for reprogramming t...
MEIYAN_L_Intel's avatar
MEIYAN_L_Intel
Icon for Frequent Contributor rankFrequent Contributor
5 years ago

Hi,

Does the design project contains multiple entities (interface JTAG via debug hub and JTAG primitive)?

An additional JTAG primitive will be created in debug hub. But only one JTAG primitive is allowed per device.

You may need to remove the entities that interface with JATG via debug hub. If the JTAG primitive is part of VQM design, you may need to regenerate VQM file without JTAG primitive.

Thanks

  • DMose2's avatar
    DMose2
    Icon for New Contributor rankNew Contributor
    5 years ago

    Just wondering ...

    Would connecting my JTAG instance via a Virtual JTAG IP core solve this issue?

    Dov