minBoundaryInteriorHalo

Sets the minimum spacing required between the edges of shapes on the specified layer and the PR boundary. You can optionally limit the constraint to consider only vertical or only horizontal edges and specify an incremental step size for the halo spacing which must be met for the constraint to be satisfied.

minBoundaryInteriorHalo Quick Reference

Constraint Type	Layer
Value Types	`Value`
Database Types	Design, Technology
Scope	design, foundry
Category	Spacing

Value Type

Value

Specifies in user units the minimum distance required between the edge of the shape and the PR boundary.

Optional Parameters

`coincidentAllowed`
	Specifies whether shapes must meet the minimum distance (`false`, default) or their edges can be coincident with the boundary (`true`). This parameter is not currently supported by Space-based Router and Chip Optimizer. Type: `BoolValue`
`interSpace`
	Restricts the size of the halo to integer multiples of this value. Type: `IntValue`
`oaSpacingDirection`
	Specifies the extension direction to which the constraint applies. Type: `IntValue` 0 any 1 horizontal 2 vertical

Examples

set_constraint_parameter -name oaSpacingDirection -IntValue 2
set_constraint_parameter -name interSpace -IntValue 0.04
set_layer_constraint -constraint minBoundaryInteriorHalo \
  -layer Metal1 -Value 0.1

Sets the minimum spacing between the vertical extensions of Metal1 shapes and the PR boundary to 0.1+(0.04*x) user units (where x is a positive integer).

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