[Magic-dev] detailed RC extraction for nets

[almitra pradhan]

Hello,

I deal with detailed modeling of interconnect network. I am interested in both lumped and distributed modeling of interconnect.

I use magic 7.1

Lumped:

Capacitance - area as well as coupling caps easily extracted by magic

Resistance - Is it possible to get resistance of wires/nets in magic. I sometimes have a magic file with only the layout of interconnect (no active devices) and I want to get resistance of the nets.

I tried to use extresis all.
The output is
Total nets 78
Nets Extracted 0
Nets Output 0

Is there a minimum value of reistance that can be extracted? The layouts that I am working on now are very small. Could that be the reason for not extracting resistance?

Distributed:

I am interested in modeling the interconnect network as a distributed R C model. I want to consider each segment of metal between two contact points as a segment and model each segment by a pi model.

Capacitance:

Magic does give lumped capacitance easily, however is there any way where I can get capacitance (area and coupling) for segments instead of the entire node.

If there is not direct way/command to do this, is there any roundabout way in which I can obtain capacitance values for segments?

All suggestions are appreciated.

Regards,
Almitra Pradhan.

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