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How to get entire net in layout

Hi all,

I need to get entire net in a layout(Power plot) . For example If I specified net name 'VDD' then it will take all layers which are connected to VDD net and copy them in new layout. Please suggest me about this.

Thank You,

Sarvani.

Andrew Beckett over 12 years ago

Version?

You can do this in IC615 with Mark Net.

Andrew
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Sarvani over 12 years ago

Sorry, I am using IC 6145 version. Is there any chance to get that in this version? Or let me know if any command related to extract a net in layout. So that I can built a code using that command as per my requirement.
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Andrew Beckett over 12 years ago

This is supported in IC614 too (not that there is any good reason to keep using IC614 now; IC615 doesn't require a database migration, and IC614 has not been supported for some considerable time now). Connectivity->Nets->Save All Mark Nets.
You could of course do it using your favourite physical verification tool to extract the net and then save the shapes to a database. You can do this with Diva, Assura, PVS, Dracula, Calibre etc, etc.
Mark Net may be sufficient - it depends on how big the cellView is. You may also need to set up Mark Net "Stop Layers" (hit F3 once you start Mark Net) to stop it marking the connectivity between source and drain under the gate.
Andrew.
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Sarvani over 12 years ago

Thank you very much Andrew, I have used marknet option. I got the Power plot net which I want. Please let me know how can I get this in IC 5141 version?
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Andrew Beckett over 12 years ago

You can't. Saving of mark net info was new in IC61 (IC614, I think).

Andrew
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Sarvani over 12 years ago

Then we have to copy all marked layers to new layout. How can I get those layers beyond marked layers?
As per your second suggition I can run it too caliber by writing rule file.
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Andrew Beckett over 12 years ago

You can't do that - I already said that. There is no mechanism to get the marked shapes.

In IC5141 you'll have to use a physical verification extraction tool (or write your own shape chaser, which is non-trivial, especially if you want good performance for large data).

Andrew
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Sarvani over 12 years ago

Thanks Andrew, Your suggitions helps me alot. Now I have done this with physical verification code also(Caliber).
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