[SI-LIST] Re: Developing High Speed Routing Rules
- From: "Patrick Jabbaz" <patrick@xxxxxxxxx>
- To: "Harvey, Wilbur" <Wilbur.Harvey@xxxxxxxxxxxxxx>
- Date: Wed, 18 Jun 2003 11:26:43 -0700
Harvey
Since you do write Do files manually I would recommend using MakeDo
product, by DFM it is a Specctra command syntax editor with built in
intelligence that reads the Specctra DSN file you want to assign
constraints to. It is a great tool for creating detailed rules for
Specctra.
Keep in mind; it is not an SI tool.
I have been using it for about a year now, and believe me it does save
time, and improves accuracy in the Syntax and rule implementations.
In case of interest have a peek at their web site=20
www.eautoroute.com
Patrick
-----Original Message-----
From: Harvey, Wilbur [mailto:Wilbur.Harvey@xxxxxxxxxxxxxx]=20
Sent: Tuesday, June 17, 2003 5:13 PM
To: Patrick Jabbaz
Cc: Yao, Jimmy; Yuen, Patrick; Au, Gabriel
Subject: RE: [SI-LIST] Developing High Speed Routing Rules
Patrick:
Thank you for your suggestions.
Actually, we are trying to find the proper crosstalk parameters so that
we
can write the rules in spectra. We currently use Allegro and Specctra,
and
write our .do files with a text editor.
Wilbur Harvey - Engineer
Spirent Communications Inc., www.adtech-inc.com
First Hawaiian Center, 999 Bishop St.. Suite 1700
Honolulu, HI 96813
Tel: +1 (808) 440 3494, +1 (808) 440 3363 (Direct)
Mobile: +1 (808) 221 0395
email: wilbur.harvey@xxxxxxxxxxxxxx
-----Original Message-----
From: Patrick Jabbaz [mailto:patrick@xxxxxxxxx]=20
Sent: Tuesday, June 17, 2003 1:50 PM
To: Wilbur.Harvey@xxxxxxxxxxxxxx
Subject: RE: [SI-LIST] Developing High Speed Routing Rules
Harvey=20
If you want to develop routing rules for specctra, the best ways to do
this is by using Do file and write the routing rules using the Specctra
command language.
I have written detailed rule files for High speed Designs.=20
I used two scenarios, one have all the constraints within Allegro, and
another scenario by having all rules done as a ASCII do file.
The results were favorable to the DO file, since you have more control
on what the router does.
Specctraquest does have the advantage of interfacing with Allegro,
however I really don't know what layout package you are using.
Specctra router, which is now under Cadence, does have a good
communication with Allegro and Specctraquest, but only one way and not
great, since it used to be a stand a alone product.
One more thing just because the Product names are similar, dos not mean
that the tools operate well with each other.=20
I currently use Allegro, Specctraquest, and Specctra on a daily basis.
The tools that work great together, is Allegro, and Specctraquest.
Let me know if you required more info regarding this.
Inkra Networks
Patrick Jabbaz CID
Sr Board Layout Eng.
40971 Encyclopedia Circle=20
Fremont, CA 94538
Work (510) 249-4835
Mobile (408) 621-6533
patrick@xxxxxxxxx
-----Original Message-----
From: Harvey, Wilbur [mailto:Wilbur.Harvey@xxxxxxxxxxxxxx]=20
Sent: Tuesday, June 17, 2003 1:02 PM
To: si-list@xxxxxxxxxxxxx
Cc: Yao, Jimmy; Au, Gabriel; Yuen, Patrick
Subject: [SI-LIST] Developing High Speed Routing Rules
We are trying to make the tradeoff of purchasing tools such as HyperLynx
or
Specctraquest.
The most important use of these tools that we see, is to develop the
Specctra routing rules.
Specifically we are working in the domain of 600Mhz LVDS and Rocket I/O,
as
well as the normal STTLII for the DDR memory interfaces.
The question is, over a several year period, would we be better off to
hire
outside companies to develop these rules for us as needed, or to have
the
tools in house and develop them ourselves. Any comments would be
appreciated.
If anyone has any leads on who we could contact to get prices on
developing
these rules it would be appreciated as well.
Wilbur Harvey - Engineer
Spirent Communications Inc., www.adtech-inc.com
First Hawaiian Center, 999 Bishop St.. Suite 1700
Honolulu, HI 96813
Tel: +1 (808) 440 3494, +1 (808) 440 3363 (Direct)
Mobile: +1 (808) 221 0395
email: wilbur.harvey@xxxxxxxxxxxxxx
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