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xtalk simulation failed

Upender

Hi ,

When doing cross talk analysis on a post -routed board,  cross talk summary window always gives the results as

 Victim XNet                       Victim Drvr                  HSOddXtalk  HSEvenXtalk  LSOddXtalk  LSEvenXtalk  Group  

xxxxx                               yyyyy                                        NA          NA           NA          NA           Group all_tw   

 for all nets.

Geometic window 16mils, trace width 4 mils.  spacing between aggressor and victim is 8 mils and they run 50mm in parallel..

The results always show NA .

does anyone know  to set any other parameters for xtalk. tool used Cadence 16.2 PCB SI XL.

 

Thanx,

Upen

 

 

 

 

   

Parents

  • Hi Upen,

    What are your stimulus and preference settings for your xtalk simulation?Some combinations will prevent the report from displaying the results, and instead cause "NA" to be displayed. For instance, if the stimulus is "Pulse" but "cycles" is set to "3" then this will cause "NA" in the voltage columns.

    After you have run your sims, do you have a signoise.run/casen/waveforms directory? Does it have a *.sim file for each simulation?

    Best regards,

    Chris

Reply

  • Hi Upen,

    What are your stimulus and preference settings for your xtalk simulation?Some combinations will prevent the report from displaying the results, and instead cause "NA" to be displayed. For instance, if the stimulus is "Pulse" but "cycles" is set to "3" then this will cause "NA" in the voltage columns.

    After you have run your sims, do you have a signoise.run/casen/waveforms directory? Does it have a *.sim file for each simulation?

    Best regards,

    Chris

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