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

lengthPatternEndRun

Determines whether end run patterns can be used to lengthen wires for matched length routing.

lengthPatternEndRun Quick Reference

Constraint Type

Simple

Value Types

BoolValue

Database Types

Design, Technology

Scope

design, foundry

Category

Mixed Signal Routing

Value Type

BoolValue

Specifies whether end run patterns can be used to lengthen wires. By default, all elongation methods can be used.

Examples

This example prevents end run patterns from being used to lengthen wires.

set_constraint -constraint lengthPatternEndRun -BoolValue false

Related Topics

Mixed-Signal Routing Constraints

lengthPatternOff

Determines whether wires can be lengthened on the layer.

lengthPatternOff Quick Reference

Constraint Type

Layer

Value Types

BoolValue

Database Types

Design, Technology

Scope

design, foundry

Category

Mixed Signal Routing

Value Type

BoolValue

Specifies whether wires can be lengthened on the specific layer.

Examples

This example prevents wires from being lengthened on Metal2.

set_layer_constraint -constraint lengthPatternOff -layer Metal2 -BoolValue true

Related Topics

Mixed-Signal Routing Constraints

lengthPatternRWAccordion

Determines whether wrong-way accordion patterns can be used to lengthen wires for matched length routing.

lengthPatternRWAccordion Quick Reference

Constraint Type

Simple

Value Types

BoolValue

Database Types

Design, Technology

Scope

design, foundry

Category

Mixed Signal Routing

Value Type

BoolValue

Specifies whether wrong-way accordion patterns can be used to lengthen wires. By default, all elongation methods can be used.

Examples

This example permits wrong way accordion patterns to be used to lengthen wires.

set_constraint -constraint lengthPatternRWAccordion -BoolValue true

Related Topics

Mixed-Signal Routing Constraints

lengthPatternTrombone

Determines whether trombone patterns can be used to lengthen wires for matched length routing.

lengthPatternTrombone Quick Reference

Constraint Type

Simple

Value Types

BoolValue

Database Types

Design, Technology

Scope

design, foundry

Category

Mixed Signal Routing

Value Type

BoolValue

Specifies whether trombone patterns can be used to lengthen wires. By default, all elongation methods can be used.

Examples

This example prevents trombone patterns from being used to lengthen wires.

set_constraint -constraint lengthPatternTrombone -BoolValue false

Related Topics

Mixed-Signal Routing Constraints


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