Product Documentation
Virtuoso Space-based Router Constraint Reference
Product Version IC23.1, June 2023

preferredViaOrigin

Specifies the via origin preference as offset or non-offset vias.

This constraint is enabled by setting the db.use_separate_pref_ext_dir environment variable to true.

preferredViaOrigin Quick Reference

Constraint Type

Layer pair

Value Types

IntValue

Database Types

Design, Technology

Scope

design, foundry

Category

Routing

Value Type

preferredViaOrigin constraints have an IntValue as shown in the following table.

preferredViaOrigin Values
Integer Value Description

0

No preference

1

Prefer via with origin at the center of all cuts

2

Prefer offset vias

Related Topics

Routing Constraints


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