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AllegroX. ConstraintManager: how to define an exemption inside a SPACING RULE ?

grax

Hi

I have fixed a SPACING RULE (SP1) for a CLASS_DIFF_PAIR whereas for via associated to the net (DP_VIA), the DISTANCE > 60mils respect to ANY other vias (PTH, BB, TEST vias)

Now my problem is that this rules should NOT be applied for GND VIAS (STICHING VIA) which must be placed at a distance < 40mils respect to DP_VIA

How to create an exemption to the SPACING RULE (SP1)?

  • SaiPavanl
    0

    Hello , You can adjust different spacing constraints between two different nets by creating a individual Net_class for the each net which have to obey the rules and create Class-to-Class by including the already created netclasses into it and apply the required spacing constraints. Refer below document for more info net class to class 

    Allegro Constraint Manager with PCB Editor Tutorial -- Setting Spacing Constraints

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