horizontalRouteGridPitch

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.

horizontalRouteGridPitch Quick Reference

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

Value Type

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

Tcl

set_layer_constraint -constraint horizontalRouteGridPitch \
-layer Metal1 -Value 0.6

LEF

Layer Metal1
   TYPE ROUTING ;
     PITCH 0.6 ;

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

     PITCH f_pitch_x f_pitch_y ;

Virtuoso

routingGrids (
   (horizontalPitch "Metal1" 0.6)
   )

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