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How to get metal spacing rules in skill

Amar Kumar

Hi,
To get the spacing between metals for a particular technology , am using the below line.

techGetSpacingRule(tech_id "minSameNetSpacing" metalName)

Here, arg1 -> technology id,    arg2 -> the constraint name,    arg3 -> metal name

This above statement returns the spacing between the metal,but it is not applicable when the layer purpose came into consideration.

Like the last argument takes only the metal name not the purpose name .

So please suggest a solution to get the spacing rules between a particular layer like ("M1" "dummy").

Thanks,

Amar Kumar

Parents

  • Amar,

    I suggest you dump the tech file. I think you'll find that there aren't any purpose-specific spacing rules in there. I'm pretty certain it's not legal syntax to specify the rules for different purposes. The special case is voltage dependent rules, but even then it's specified in a special way - see 

    You may have different rules in some DRC rules perhaps, but not in the tech file. Since the tech file doesn't support it, having the SKILL API support it wouldn't make sense either.

    Regards,

    Andrew.

Reply

  • Amar,

    I suggest you dump the tech file. I think you'll find that there aren't any purpose-specific spacing rules in there. I'm pretty certain it's not legal syntax to specify the rules for different purposes. The special case is voltage dependent rules, but even then it's specified in a special way - see 

    You may have different rules in some DRC rules perhaps, but not in the tech file. Since the tech file doesn't support it, having the SKILL API support it wouldn't make sense either.

    Regards,

    Andrew.

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