matchTolerance
Specifies the absolute tolerance, in user units, when matching net lengths. This constraint only applies to net groups of type net_match.
matchTolerance Quick Reference
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Constraint Type
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Simple
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Value Types
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Value
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Database Types
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Design, Technology
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Scope
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design, foundry
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Category
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Mixed Signal Routing
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Value Type
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Value
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Specifies the tolerance, in user units, for matching shorter nets in the net group to the length of the longest net.
Errors are reported on nets that are shorter than the longest net minus the matchTolerance value. If both matchTolerance and msTolerance are specified, matchTolerance is used. However, for interoperability, you should only use msTolerance, which is a percentage value.
The default tolerance is two times the pitch or four times the gap space.
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Examples
Sets the match tolerance to 0.6.
set_constraint -constraint matchTolerance -Value 0.6
Related Topics
Mixed-Signal Routing Constraints
matchTolerance
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