[SI-LIST] Re: Run Scheduled Drivers IBIS models on HSPICE 2001.4

Hi Michael,

You do not have to add anything into your netlist in order for [Driver
Schedule] to work.  Hspice reads the [Driver Schedule] data and the
corresponding 'scheduled' models from the IBIS file.  In the IBIS file, the
[Driver Schedule] data will look something like:

[Driver Schedule]
| Model_name  Rise_on_dly  Rise_off_dly  Fall_on_dly  Fall_off_dly
CPU_N                  0                    NA
0                 NA
CPU_P               0.250ns           2.5ns           NA                NA

In this example, the scheduled models are CPU_N and CPU_P.  The models must
be of the same model type as the top level model that these are scheduled
for  So, if the top level model is model type I/O, then both the scheduled
models CPU_N and CPU_P must also be I/O buffers.  If the scheduled buffers
are not of the same model type as the top level buffer, you will get a error
message, "Inconsistent nodelist between the top and the scheduled model" and
Hspice will abort.

The driver schedule implementation will be improved in the next release so
that the scheduled models do not have to be the same model type as the top
level model.

Let me know if you have any other questions about this.

Tracy Barclay
Star-Hspice Product Specialist
Avant! Corporation

> Gurus:
>           I have a scheduled drivers IBIS model that I try to run on =
> HSPICE 2001.4. HSPICE manual does not seems to have a nodelist format =
> for=20
> the scheduled drivesr IBIS model. Am I supposed to use the nodelist as a =
> generic I/O buffer as described inside the manual or I have to use a=20
> specific nodelist just for scheduled drivers ? I sent a request to =
> AVANTI but no response so far. Thanks.
>
> Regards,
> Michael Chan
>
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