( ESNUG 404 Item 7 ) --------------------------------------------- [01/08/03]
Subject: ( ESNUG 396 #3 ) Rectilinear Blocks In PhysOpt/Apollo/Astro Flows?
> For our upcoming hierarchical design chip, I see that our blocks will be
> well utilized based on the connectivity and functionality -- if our blocks
> are allowed to be rectilinear (non rectangular) in shape -- rather than
> the conventional rectangular shapes. Even though the EDA tools out there
> claim that they can handle rectilinear shapes, I am very positive that I
> will run into a lot of implementation and integration issues in doing so.
> So I am wondering if your readers have experience in handling rectilinear
> blocks, especially with Synopsys (PhysOpt)/ Avanti (Jupiter/Apollo) tools.
>
> Some stuff that I am curious about are
>
> 1. How difficult is it in getting the pins assigned when the number of
> edges exceeds 4?
> 2. Is power routing capable of dropping straps of different lengths
> because of different dimensions in one direction or do I have to
> manually alter the lengths?
> 3. Will writing out the GDSII have any problems?
> 4. Can the parasitic extractor handle arbitrary shaped blocks?
>
> Plus is there anything else that would make my life miserable here?
>
> - Jay Pragasam
> Brecis Communications San Jose, CA
From: Raghav Yerramreddikalva <raghav.yerramreddikalva in intel pot pomme>
Hi John,
I read the ESNUG 395 #6 question regarding "How to deal with Rectilinear
Block Designs in PhysOpt/Jupiter/Apollo Flows", and the corresponding
feedback. The corresponding feedback in ESNUG 396 #3 was not directly
dealing with the PhysOpt/Jupiter/Apollo tools. I was wondering if you
were aware of any fully user-debugged rectilinear block flows using
PhysOpt, Jupiter, Apollo and/or Astro tools? If so, can you please let
me know?
- Raghav Yerramreddikalva
Intel
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