set_routespec_taper

set_routespec_taper
[ -route_spec s_routeSpec ] 
[ [ -taper_route_spec s_routeSpec ] 
| [ -input_taper_spec s_routeSpec -output_taper_spec s_routeSpec ] ] 

Description

Sets the taper-to route spec for a route spec or all route specs or disallows tapering on a route spec or all route specs.

By default, all non-default route specs taper to the global net default route spec (typically LEFDefaultRouteSpec) and the maxTaperWindow is 10 tracks (a track is calculated as the average pitch of the layers). The maxTaperWindow determines the distance, in microns, from a term where the influence of the taper rule stops and switches to the net’s constraints.

Arguments

-input_taper_spec s_routeSpec
	Specifies the input taper route spec.
-output_taper_spec s_routeSpec
	Specifies the output taper route spec.
-route_spec s_routeSpec
	Specifies the target route spec.
-taper_route_spec s_routeSpec
	Specifies the taper route spec for the given target route spec. If this argument is not specified, tapering is not allowed on the target route spec.

Examples

The following example allows tapering on the isolate_double route spec to the double route spec.

set_routespec_taper -route_spec isolate_double -taper_route_spec double

The following example disallows tapering on all route specs.

set_routespec_taper

The following example disallows tapering on the isolate_double route spec.

set_routespec_taper -route_spec isolate_double

Related Topics

Design Configuration Commands

get_routespec_taper

Using Tapers

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