[SI-LIST] question about IBIS's V-T curve Scaleing ?

Hello si-list Gurus ,

   I have read some docs about how simulator using IBIS model
   to construce a behavior model. this question have discussed
   before and now i know V-T curve is used to scale V-I curve
   and regenerate a transient V-I curve.
   But when i reading Cadence's user manual( simref.pdf page:386 )
   sth make me puzzle. there is a discussion about VT curves and
   switching , It is points out that switching coefficient does not
   uniquely fall out of VT curves and there are priori assumptions
   have to be made,and there are some model cases .

   I am  difficult to understand this , what assumptions needed ?
   except using V-T curve or Ramp data , is there any other ways to
   scale V-I curve ?

   thanks in advance

-- 
Best regards,
 qzheng                          mailto:qzheng@xxxxxxxxxxxxxxxx

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