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Vinay
(Unregistered)
10/09/08 03:03 PM
Sequence Extends EM And V-drop Analysis To Full-Custom Designs; Speedview-AMS To Offer New Power-Rail Analysis Capabilities Report this article as Inappropriate to us !!!Login to Reply

Sequence Extends EM And V-drop Analysis To Full-Custom Designs; Speedview-AMS To Offer New Power-Rail Analysis Capabilities


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Vinay
(Unregistered)
10/09/08 03:03 PM
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The headline was very catchy and seemed impressive. After reading many times over I could read the fine print which brought about more clarity about the exact features. I didn't find it particulary high class engineering.
To be precise Speedview does not offer any Vdrop analysis per-se, but has been now able to overlay the voltage values at different points, on top of the existing layout.
The voltage values come from an external simulation. Speedview reads these values which need to specified in its own format. Then it annotates them on the layout geometries. Except a convenience of display there is hardly any information addition made by Speedview.
The role of Cooltime isn't really visible. Cooltime analyzes cell based designs only. The above feature of displaying Vdrop values has nothing to do with either cell base or full custom designs. There is no SPICE simulation done by either Columbus and Cooltime and is left to the user.
The claims made in the article seem to be exaggerated, and I request them to be reworded. Please change the headline to "Sequence OVERLAYS result of Vdrop analysis in the layout viewer"

Sunny
(Unregistered)
10/09/08 03:03 PM
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I too find the article a little misleading in some parts. Though it does state the facts correctly later, in some places the words are misleading. The webpage of Cooltime says it is indeed a cell based Vdrop Analysis tool. But its usage in the article gives an impression to the reader that Vdrop capabilities have been borrowed from the Cooltime. Later in the article it's evident that this is not quite true since an external simulation is actually done for analysis.
The hype about speedview is that there is now a viewing capability provided with extraction as has been the case with most other competing products in the AMS design space. Good job done by Sequence, being a small company.


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