I think we're in violent agreement. To recap:
1) SPICE simulators vary in the way they handle behavioral
2) IBIS outputs are essentially piecewise-linear conductors.
3) Time-domain behavior involves interpolating between the
ON-state V/I model and the OFF-state V/I model and back for
both the pullup and pulldown sections.
4) This last involves another simulator-dependent implementation.
> John Lin - TAO wrote:
> > SI experts,
> > How do I construct a SPICE model from an IBIS model?
> That depends on the SPICE simulator. The syntax for
> piecewise-linear transconductance elements differs
> from one to another. Time-domain behavior is even
> more interesting; basically, you have to take the
> four V/T curves and back them through the V/I curves
> to get turnon and turnoff profiles for the pullup
> and pulldown devices, then make up a subcircuit
> that modulates the transconductances to get the
> same result.
> D. C. Sessions
-- D. C. Sessions email@example.com