verticalRouteGridPitch

Sets spacing, edge-to-edge, in user units, between vertical routing grids. Along with the horizontalRouteGridOffset, this constraint defines the route grid points on the X axis for the layer.

verticalRouteGridPitch Quick Reference

Constraint Type	Simple
Value Types	`Value`
Database Types	Design, Technology
Scope	design, foundry
Category	Routing

Value Types

verticalRouteGridPitch constraints have a Value that represents the spacing, in user units, between vertical routing grids for the layer.

Examples

In this example, the spacing between vertical routing grids must be 0.6 user units on Metal1.

Format Example

Format	Example
Tcl	set_layer_constraint -constraint verticalRouteGridPitch \ -layer Metal1 -Value 0.6
LEF	Layer Metal1 TYPE ROUTING ; PITCH 0.6 ; This example sets the same value for both vertical and vertical pitches. If the values differ, include both values with this syntax: PITCH `f_pitch_x f_pitch_y` ;
Virtuoso	routingGrids ( (verticalPitch "Metal1" 0.6) )

Tcl

set_layer_constraint -constraint verticalRouteGridPitch \
-layer Metal1 -Value 0.6

LEF

Layer Metal1
   TYPE ROUTING ;
     PITCH 0.6 ;

This example sets the same value for both vertical and vertical pitches. If the values differ, include both values with this syntax:

     PITCH f_pitch_x f_pitch_y ;

Virtuoso

routingGrids (
   (verticalPitch "Metal1" 0.6)
   )

viaTapAllowed

Specifies whether a route can be connected to another leg of the net with a via.

viaTapAllowed Quick Reference

Constraint Type	Simple
Value Types	`BoolValue`
Database Types	Design, Technology
Scope	design
Category	Routing

Value Type

The viaTapAllowed constraint has a BoolValue that specifies whether a route can be connected to another leg of the net with a via.

wireExtent

Specifies the general wire extension.

wireExtent Quick Reference

Constraint Type	Layer
Value Types	`Value`
Category	Routing

Value Type

The wireExtent constraint has a Value that specifies the general wire extension, in user units.

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