Product Documentation
Virtuoso Space-based Router Command Reference
Product Version IC23.1, September 2023

check_strong_weak

check_strong_weak
{-all | -net s_netName | -set d_setObj} 
[ -annotate [ true | false ] ] 
[ -annotation_limit i_count ] 
[ -error_set d_setObj ] 
[ -exclude_net {s_netName…} ] 
[ -exclude_set d_setObj ] 
[ -exclude_type {[power][ground][clock]} ] 

Description

Checks for pin shapes that are weakly connected. The scope of the check can be the entire design, a given net, or a given set. The condition occurs when two pin shapes of an instance each terminate a route and the pin shapes are only connected through a high resistance material.

The GUI equivalent for this command is Verify—Connectivity.

Arguments

-all

Operates on the entire design in the active artwork window.

-annotate [ true | false ]

Chooses whether to mark weakly connected pin shapes with annotations. The annotations are added to the annotation:violation purpose of the pin layer and are listed by pin under Check Connectivity—Strong/weak violation in the Violations page of the Annotation Browser.

-annotation_limit i_count

Specifies the maximum number of violations to create annotations for. By default, annotations are created for up to 1000 violations. Specify -annotation_limit -1 to choose no limit.

-error_set d_setObj

Specifies the set to add nets with weak connects to.

-exclude_net {s_netName…}

Excludes the specified nets from processing. This argument is ignored if -net is given.

-exclude_set d_setObj

Excludes nets in the given set from processing.

-exclude_type {[power][ground][clock]}

Excludes nets of the specified types from processing.

-net s_netName

Checks strong/weak connectivity on the specified net.

-set d_setObj

Checks strong/weak connectivity on the selected structures.

Value Returned

i_count

Indicates the number of weakly connected pins found.

-1

The command did not run due to a syntax error or a missing required argument.

Examples

The following example runs the strong/weak analysis on the entire design.

check_strong_weak -all

Related Topics

Verify Commands


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