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请各位大侠帮我看一下这个ibis模型怎么了

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发表于 2010-7-22 17:13:00 | 显示全部楼层 |阅读模式
请各位大侠帮我看一下这个ibis模型怎么了,这是我从TI官网上下载的,在编译的时候报错:
ERROR - Model Model67: The [Rising Waveform]
  with [R_fixture]=50 Ohms and [V_fixture]=0V
  has TYP column DC endpoints of0.00V and1.19v, but
  an equivalent load applied to the model's I-V tables yields
  different voltages ( 0.00V and0.98V),
  a difference of0.00% and 21.94%, respectively.
ERROR - Model Model67: The [Falling Waveform]
  with [R_fixture]=50 Ohms and [V_fixture]=1.8V
  has TYP column DC endpoints of0.63V and1.80v, but
  an equivalent load applied to the model's I-V tables yields
  different voltages ( 0.88V and1.80V),
  a difference of 27.06% and0.00%, respectively.
WARNING - Model Model67 Pulldown Minimum data is non-monotonic
WARNING - Model Model67 Pullup Maximum data is non-monotonic
ERROR - Model Model67: The [Rising Waveform]
  with [R_fixture]=50 Ohms and [V_fixture_max]=0V
  has MAX column DC endpoints of0.00V and1.38v, but
  an equivalent load applied to the model's I-V tables yields
  different voltages ( 0.00V and1.15V),
  a difference of0.00% and 20.19%, respectively.
ERROR - Model Model67: The [Falling Waveform]
  with [R_fixture]=50 Ohms and [V_fixture_max]=1.89V
  has MAX column DC endpoints of0.53V and1.89v, but
  an equivalent load applied to the model's I-V tables yields
  different voltages ( 0.84V and1.89V),
  a difference of 29.38% and0.00%, respectively.
哪位大侠知道的帮帮忙啊,不知道的也帮我分析分析吧。
我这有一段解释:This happens because the function acdc_VI_Given_VIC_VR() in acdc.c improperly
reports the I-V/V-t intersection whenever it lies above the highest voltage in
the I-V characteristic.This defect is likely to show itself in models lacking
clamp tables and in which either the [Pullup] or [Pulldown] table does not cover
the range from -Vcc to 2*Vcc.Any open drain or open source model which lacks
clamp tables is likely to meet these conditions because it is likely to lack
either the [Pullup] or [Pulldown] table.In this test case, IBISCHK generates
error messages only for the MIN data because the highest voltage in the high-
state I-V characteristic for the minimum corner lies below the 1.8 V V-T
operating voltage.
但是缺少该怎么做啊
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