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

gapSpace

Specifies the spacing required between the signal net and its parallel shields.

This constraint is obsolete. The current method uses minSpacing in the shield constraint group for a net to specify the spacing between signal nets and their parallel shields.

gapSpace Quick Reference

Constraint Type

Layer

Value Types

Value

Database Types

Design, Technology

Scope

design, foundry

Category

Mixed Signal Routing

Value Type

gapSpace constraints have a Value that represents the spacing, in user units, required between signal nets and their shield routes on the layer.

Examples

Sets the spacing on Metal4 between net1 and its parallel shields to 0.8.

set_layer_constraint -layer Metal4 -constraint gapSpace -Value 0.8 \
-hardness hard -group single_shield
assign_constraint_group -group single_shield -net net_1

Related Topics

Mixed-Signal Routing Constraints


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