About ibischk2+

Dear All,

I checked IBIS models by ibischk2+.
I have two questions.
Could you support me ?

1) Dose ibischk2+ make errors when IV table is non-monotonic?
2) Why dose not ibischk2+ use "R_dut" value?

---- Example of "1)" ---------------------------------------------------------
WARNING (line 47) - Pulldown Typical data is non-monotonic
WARNING (line 49) - Pulldown Maximum data is non-monotonic <-
WARNING (line 143) - Pullup Maximum data is non-monotonic
WARNING (line 183) - Pullup Minimum data is non-monotonic
WARNING (line 185) - Pullup Typical data is non-monotonic
WARNING - Model 'Buffer1': TYP AC Falling Endpoints ( 0.87V, 3.30V) not within
          0.049V (2%) of ( 0.77V, 3.30V) on VI curves for 50 Ohms to 3.3V
WARNING - Model 'Buffer1': MIN AC Falling Endpoints ( 0.93V, 3.28V) not within
          0.047V (2%) of ( 0.84V, 3.29V) on VI curves for 50 Ohms to 3.3V
WARNING - Model 'Buffer1': MAX AC Rising Endpoints (-0.00V, 1.85V) not within
          0.037V (2%) of (-13.50V, 1.87V) on VI curves for 50 Ohms to 0V
                          ???????
WARNING - Model 'Buffer1': MAX AC Falling Endpoints ( 0.81V, 3.30V) not within
          0.050V (2%) of (-15.70V, 3.30V) on VI curves for 50 Ohms to 3.3V
                          ???????
Errors : 0
Warnings: 9
----------------------------------------------------------------------------------

Pulldown Maximum data corrected.

WARNING (line 47) - Pulldown Typical data is non-monotonic
WARNING (line 143) - Pullup Maximum data is non-monotonic
WARNING (line 183) - Pullup Minimum data is non-monotonic
WARNING (line 185) - Pullup Typical data is non-monotonic
WARNING - Model 'Buffer1': TYP AC Falling Endpoints ( 0.87V, 3.30V) not within
          0.049V (2%) of ( 0.77V, 3.30V) on VI curves for 50 Ohms to 3.3V
WARNING - Model 'Buffer1': MIN AC Falling Endpoints ( 0.93V, 3.28V) not within
          0.047V (2%) of ( 0.84V, 3.29V) on VI curves for 50 Ohms to 3.3V
WARNING - Model 'Buffer1': MAX AC Falling Endpoints ( 0.81V, 3.30V) not within
          0.050V (2%) of ( 0.70V, 3.30V) on VI curves for 50 Ohms to 3.3V
                           ^^^^^
Errors : 0
Warnings: 7
--------------------------------------------------------------------------------
  
Best regards.

Shigeto Nakajima
NEC Corpration

shigeto@saed.tmg.nec.co.jp
Received on Sun May 17 18:22:43 1998