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Netclass and Netgroup in Innovus

What exactly is the difference between Netclass and netgroup?

For example, if I give simple Netclass constraint in Innovus, the command report_net_groups shows netclass constraint as output. so, netClass is a kind of netgroup? what's the difference?

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Dimo M over 4 years ago

Hi,
netClass constraints are intended for routing constraint interoperability between Innovus and Virtuoso.
NanoRoute (the routing engine of Innovus) has to support this sort of constraints, so net groups are created for them implicitly.

For more information about the routing constraint interoperability, you can refer to the Routing Constraint Interoperability chapter in the Mixed Signal Interoperability Guide

Dimo
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Dimo M over 4 years ago

Hi,
netClass constraints are intended for routing constraint interoperability between Innovus and Virtuoso.
NanoRoute (the routing engine of Innovus) has to support this sort of constraints, so net groups are created for them implicitly.

For more information about the routing constraint interoperability, you can refer to the Routing Constraint Interoperability chapter in the Mixed Signal Interoperability Guide

Dimo
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