[SI-LIST] si with ibis model

  • From: "lauwell009" <lauwell009@xxxxxxx>
  • To: "si-list" <si-list@xxxxxxxxxxxxx>
  • Date: Thu, 22 Oct 2009 20:05:42 +0800

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Hello,
  when I use IBIS   model for si analysis,comparing IBIS model to I\O HSPICE 
model of altera's Stratix_II_GX FPGA,I find that the output signal of IBIS  
delays more at fall edge than at rise.In the picture,white line is the input 
signal,blue line is the output signal of IBIS model and red line is the output 
signal of Hspice model.The load conditions are both same in simulations.
  what happened in my simulation?can anybody tell me the reason  ?  



2009-10-22 




Best regards

wei.liu



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