From: Donald Telian ([email protected])
Date: Tue Sep 26 2000 - 08:45:27 PDT
Answers for SPECCTRAQuest are below.
Thanks for asking,
At 01:48 PM 9/25/00 -0400, May, John wrote:
>> -----Original Message-----
>> From: May, John
>> Sent: Monday, September 25, 2000 1:20 PM
>> To: '[email protected]'
>> Subject: Spectraquest Vs. XTK/XNS
>> Hi all - My group is looking into purchasing one of these tool suites for
>> SI analysis. I'm wondering what the tradeoffs and limitations of each are.
>> For instance:
>> 1) Can botth suites handle HSPICE models in a mixed environment with IBIS
SPECCTRAQuest uses an optimized spice engine for analysis. As such, all
types of spice models can be used with the exception of transistor-based
models (M elements). Naturally, IBIS models can be used as well. If you
want to use both IBIS and transistor-level IO models, we have a netlist
converter that will translate our proprietary spice netlist (extracted from
PCB layouts or topology drawings) into a variety of other spice formats.
>> 2) Do either of the tools have trouble with differential inputs(high and
>> low inputs used with a differential receiver)?
SPECCTRAQuest has support for differential drivers and receivers.
>> 3) Connector stitching: How easy is it to use these tools for going
>> through connectors to model paths that traverse multiple modules?
It is quite simple to join multiple board layout files together in
SPECCTRAQuest for simulation. And that includes package layout (.mcm)
files as well. A variety of connector or cable models can be easily placed
between the boards. The simplest being RLC or RLGC representations, but
fully-coupled connector models can also be integrated into the simulation.
This normally requires some re-formatting of the data from the connector
vendor, but it is not too hard to do assuming you understand how to build
and call spice subcircuits.
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