High Speed - Parallel Segment
This document is no longer available beyond version 21. Information can now be found here: Parallel Segment Rule for version 25
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Rule category: High Speed
Rule classification: Binary
Summary Copy Link Copied
This rule specifies the distance two track segments can run in parallel, for a given separation.
Constraints Copy Link Copied
Default constraints for the Parallel Segment rule.
- Layer Checking - specifies where the two track segments to be checked should reside:
- Same Layer - the track segments for the targeted nets are both on the same layer
- Adjacent Layers - the track segments for the targeted nets are on adjacent layers.
- For a parallel gap of - specifies the parallel gap that should exist between two track segments before they can be considered for test. Parallel track segments with a gap of this value or less will be tested.
- The parallel limit is - specifies the maximum permissible parallel length of two track segments (on different nets), when the parallel gap constraint is observed over the entire length.
How Duplicate Rule Contentions are Resolved Copy Link Copied
Duplicate rules do not create contentions for this rule.
Rule Application Copy Link Copied
Online DRC and Batch DRC.
Note Copy Link Copied
This rule detects parallel track segments that are within the parallel gap setting, then adds all segment lengths that are in those nets. When the sum of these segment lengths exceeds the parallel limit, a DRC violation is flagged. A simple example is shown below.
