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FTang's avatar
FTang
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4 years ago

Cisco project 5CSTFD55F3117NF impedance abnormal

flying probe test detected the impedance to GND on net "P1v1_FPGA" lower than normal value. NG value is 42 ohms. Normal value is 190 ohms. 2 pcs D/C2049 were found issue at our NPI project nee...
Mike_Intel's avatar
Mike_Intel
Icon for Occasional Contributor rankOccasional Contributor
4 years ago

Hello FTang,


Thank you so much for the quick response. However, we still cannot find model that you provided.

By the way, can you also confirm if you are designing a board or a system with embedded network controller?

How are you trying to implement Breton in the system?


If you have questions, please let us know. In case we do not hear from you, we will make a follow up after 3 workings days. Thank you.


Best regards,

Michael L.

Intel® Customer Support Technician


  • FTang's avatar
    FTang
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    4 years ago

    Hello Michael,

    Maybe I misunderstood about the model. The Intel product model of 5CSTFD55F3117NF is Cyclone V E. It is a FPGA.

    Cisco design a system with embedded network controller. For the issue we encountered, it is just impedance between pin "P1v1_FPGA" to GND is lower than normal.

    • Zawani_M_Intel's avatar
      Zawani_M_Intel
      Icon for Frequent Contributor rankFrequent Contributor
      4 years ago

      Hello FTang,

      Can you help to provide the pin name involved?

      Wani

      • FTang's avatar
        FTang
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        4 years ago

        Hi Wani,

        The pin name involved are VCC1-26 and VCC_HPS1-13.