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How to calculate the length of a routing which is in different metal connected through via

AmitBiswas
Hi, I am trying to find out the length of one routing by clicking at two points of that routing. Here the routing is in metal2 and metal3 connected through via23. Is there any way to check in SKILL that exactly where that metal is getting connected with other one through via. Consider that all are paths there is no rectangle or polygon. Is it possible to do it using only SKILL or I need to use Assura also.............? Thanks & Regards, Amit
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  •  These types of traces are usually done with analysis tools such as a DRC/LVS tool. They have a ruleset which describes the layer relationship and can trace the circuit through the various levels and metals. The circuit length is then extracted. If you want to persue it in SKILL, the command you will want to use is dbGetTrueOverlaps. It can find anything in the hierarchy within a bounding box.You can make some assumptions about vias, that they do connect from one level to the next, without having to analyze them.

    Ted

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  •  These types of traces are usually done with analysis tools such as a DRC/LVS tool. They have a ruleset which describes the layer relationship and can trace the circuit through the various levels and metals. The circuit length is then extracted. If you want to persue it in SKILL, the command you will want to use is dbGetTrueOverlaps. It can find anything in the hierarchy within a bounding box.You can make some assumptions about vias, that they do connect from one level to the next, without having to analyze them.

    Ted

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