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[SI-LIST] Capturing the effects of impedance variation due to plane splits

  • From: Mahesh Krishnan <maheshkrish@xxxxxxxxxxx>
  • To: si-list@xxxxxxxxxxxxx
  • Date: Fri, 11 Jun 2004 13:07:23 +0100 (BST)
Hi all,
I was running some simulations with XTK on an Allegro database. The board has 
traces running across power plane splits which are as wide as 70 to 100 mils. 
But, I do NOT see the effects either in the waveforms on in the xfx related 
files (.tlp, .cpl).
 
I had set PARTIAL_PLANE_DEF = ISF in the .gcf file.
 
Is possible to extract the details of power plane splits from an Allegro data 
base? Or do I need to specify them in the .gcf? The shapes of the cuts were 
pretty complex to be modelled in the gcf.
 
Please let me know your thoughts.
Thanks,
--mahe.
                
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