[PCB_FORUM] Re: CDNLive! Conference
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Thu, 7 Jul 2005 16:27:16 -0400
Todd,
I completely agree with you assessment on the way that system design is
being affected by the signal speeds and the die packaging has caused me a lot
of pain in some of my recent designs. As a matter of fact the more I think
about there are some tool gaps that seriously need to be addressed by Cadence.
How can I set a diff pair phase tolerance at 20 mils in allegro when the pair
is routed out the die package with the tolerance greater than 20. Zero doesn't
even work here! I have experienced similar issues with the rel prop delay.
Maybe I am missing something and do need to get some better high speed
tutorials because the way I have been solving the problem is with an excel
spread sheet and formulas. I believe one thing that would help would be to have
a net property with cline length from the die package and of course I would
want the data auto loaded from Allegro/APD. But back to the APD papers on
Monday am I to get out of this that if I go to the conference on Monday and
attend these papers I will be better able to deal with these issues in PCB the
design arena with allegro? Put more bluntly will my boss notice an improvement
in turnaround time and quality of design by attending? For me and probably many
others this is the crux of the biscuit.
I believe, will be able to make a better judgment upon reading
abstracts, the Tuesday Allegro and capture material is adequate and worth
seeing. The Wednesday session revolves around high speed design and yes I would
be interested but we don't use Spectra quest and probably will not until core
tool issues with high speed design such as the one mentioned above have been
resolved. So I am on the east coast why would I go 3000 miles for one day?
Carl
-----Original Message-----
From: Todd Westerhoff (twesterh) [mailto:twesterh@xxxxxxxxx]
Sent: Thursday, July 07, 2005 3:59 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: CDNLive! Conference
Randy,
Thanks for your question. It's difficult for me to comment on all the
abstracts we received, as not all of them were accepted for the
conference.
So - on the subject of SPECCTRA, let simply say that we received very,
very few papers, which weren't addressing current design issues (I'm
being deliberately vague). Therefore, unfortunately, there isn't a
paper on SPECCTRA currently scheduled for the conference. We did
solicit material from Cadence R&D and receive a number of good papers on
a collection of topics.
As for packaging design, we see the increase in signal speeds making
this a more important issue. Of course, the packaging folk have thought
this all along - and the systems folks are starting to agree. We're
seeing more systems designs where board level routing has to accommodate
decisions made at the IC/package design level, and where making
tradeoffs between the die/package/PCB design is becoming critically
important.
I would have liked to run two parallel tracks for SPB for more than just
Tuesday afternoon as well - we didn't have the papers to support it.
As for the Fun Night, I'm with you, but that's Cadence's call. Tuesday
used to be "all you can drive" night until Midnight at the Malibu Grand
Prix in Redwood City - we could organize a group and cut out after the
technology demonstrations ...
(I'm not buying, though).
Todd .
Todd Westerhoff
High Speed Design Group Manager
Cisco Systems
1414 Massachusetts Ave - Boxboro, MA - 01719
email:twesterh@xxxxxxxxx
ph: 978-936-2149
============================================
"Always do right.
This will gratify some people and astonish the rest."
- Mark Twain
-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of Bye, Randy W
Sent: Thursday, July 07, 2005 2:41 PM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: CDNLive! Conference
Todd and Mike,
As far as I can tell there is no Specctra/Auto-route content at all. In
the past there was at least 1/2 day of content for Specctra alone. Did
you receive any auto-route/Specctra abstracts? Did you solicit Cadence
R&D for Specctra papers? In the past APD/package sessions have been
very poorly attended when compared to all other tracks. Based on prior
year's statistics, it seems inefficient to offer so much APD/Package
material as compared with the available PCB sessions. Providing only
one day of content that is directly geared toward PCB designers is
significantly less than what has been available other years. I would
agree that the SI papers that are being presented on Wednesday are
applicable to PCB designers, but in the past there were normally at
least 2 full PCB tracks on Tuesday and Wednesday. The CDNLive schedule
has only 1 pcb track offered each day.
Also, why isn't training being offered on Sunday? Many folks that fly
in like to take advantage of Saturday night stay-over price breaks and
then attend training sessions on Sunday.
Finally, last and definitely least important, what happened to Cadence
Fun Night???? It was my understanding that Cadence Fun Night would be
reinstated with the CDNLive event.
My 2cents.....
Randy Bye
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