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 NRDB-51 warning  

Last post Thu, May 17 2012 12:35 AM by gpremala. 0 replies.
Started by gpremala 17 May 2012 12:35 AM. Topic has 0 replies and 1325 views
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  • Thu, May 17 2012 12:35 AM

    • gpremala
    • Not Ranked
    • Joined on Wed, Feb 29 2012
    • Ahmedabad, Gujarat
    • Posts 8
    • Points 215
    NRDB-51 warning Reply

    Hi All,

    I am having Warnings after CTS,Route and PostRoute opt

    WARNING (NRDB-51) SPECIAL_NET SG_rr is empty with no instance pin and special wire. Net with the same name will be routed but will not be connecte to the empty SPECIAL_NET.

    The SG_rr net is too long and having approx. 30ns net delay.

    By observing this I found that this net is HFN, and its net length is  approx. 14k microns, I did constarined signal net not to exceed 4000 microns.

    But the tool is not able follow the net length constrain. and it doesnot add a buffer after 4000 microns.

    Please provide me the solution on proper routing of HFN.

    Tool SoC Encounter with version edi11. 

     

    Thanks,

    Gopi 

     

     

     

     

    • Post Points: 5
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Started by gpremala at 17 May 2012 12:35 AM. Topic has 0 replies.