[SI-LIST] Re: SI tools
- From: Aubrey_Sparkman@xxxxxxxx
- To: dav0x@xxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Fri, 7 Nov 2003 12:36:21 -0600
Ken,
Aren't there two versions of SigXplorer?
Aubrey Sparkman
Enterprise Engineering Signal Integrity Team
Dell, Inc.
Aubrey_Sparkman@xxxxxxxx
(512) 723-3592
> -----Original Message-----
> From: Dav0 Lieby [mailto:dav0x@xxxxxxxxx]
> Sent: Friday, November 07, 2003 11:09 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: SI tools
>
>
> This may be true, a lot of support people
> send emails indicating it can be done. If
> one is to look through the documentation that
> comes with the product to see how it is done,
> as one who gets a temp or eval license would,
> there in nothing much to help. Quite a lot of
> time can be spent trying to figure out how to
> get things to hook up and run.
>
> SigXplorer is powerful, I use it for a lot
> of analysis. I also have a very hard time
> with the documentation and the lack of good
> examples.
>
> David Lieby
> SI Engineering
> Siemens Medical Systems
> Ultrasound Division
> Mountain View Campus
> --- Ken Willis <kwillis@xxxxxxxxxxx> wrote:
> > Hi Chris,
> >
> > Some explanation on SigXplorer. You can use it
> > completely
> > standalone from Allegro if you want. It is pretty
> > easy to
> > build up a complex topology, and even use "black
> > boxes"
> > where you can paste in big SPICE subcircuits. It is
> > not
> > limited to a stack-up, because lots of folks build
> > multi-
> > board topologies (including multi-layer packages),
> > so
> > there may be MANY stack-ups involved. And some of
> > them
> > may not be defined yet, with "what-if" sweeps being
> > run
> > (ex. diectric thickness, line width, spacing, etc)
> > to figure
> > what the stackup should be.
> >
> > So it lets you just pick a microstrip, stripline
> > etc. with
> > some number of conductors, and you can plop it in
> > the canvas
> > and set up the conductor parameters however you
> > want. Or if
> > you have an Allegro brd set up, you can just extract
> > it into
> > SigXp and do analyses on that.
> >
> > In a nutshell, it is set up like this to support
> > either pre-
> > layout exploration or post-route verification.
> >
> > Ken
> >
> > -----Original Message-----
> > From: Chris Landrum x311
> > [mailto:clandrum@xxxxxxxxx]=20
> > Sent: Thursday, November 06, 2003 1:34 PM
> > To: 'si-list@xxxxxxxxxxxxx'
> > Subject: [SI-LIST] SI tools
> >
> >
> > This may be a topic dicussed at nauseam on this list
> > but....
> >
> > I am attempting to evaluate SI tools. I have a temp
> > license for Cadence
> > SigExplorer as well as an eval license for Mentor
> > Hyperlynx. I am
> > finding enormous pitfalls in both tools (for what I
> > intend to use them
> > for).
> >
> > SigExplorer
> > In this tool you can't specify stackups without
> > going through Allegro.
> > It would be extremely useful to be able to do
> > "what-if's" on the
> > stack-up. Hyperlynx does seem to allow this. This
> > tool (ver 15)
> > requires that you be very conscious in how your
> > parts are set-up. ALL
> > pins must be specified in Allegro prior to
> > extracting a net. This is
> > just a little annoying for things like resistor
> > packs and such.
> >
> > Hyperlynx
> > Allows use of the field solver directly which is
> > good. A major problem
> > I see is that when specifying a "what-if" scenario,
> > it seems you can
> > ONLY specify parallel, thev, or series terms...what
> > about terms that
> > include AC coupling and the such?
> >
> > So here is my question. What tools do you people
> > use to simulate board
> > stack-ups, crosstalk, transmission line
> > characteristics, lossy signals,
> > etc.?
> >
> > I am almost thinking the best route to go is to get
> > a 2-D field solver
> > and a spice simulator, but I would like to be better
> > integrated with my
> > layout tool.
> >
> >
> >
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