check_discrete_width
check_discrete_width
-lpp s_layerlpp
[ -annotate [all | none | dim | rect] ]
[ -annotation_limit i_count ]
[ -clear_annotations ]
[ -output_lpp s_lpp ]
[ -region {f_xlo f_ylo f_xhi f_yhi} ]
[ -threads i_threads ]
[ -top_level_only ]
[ -trim_corners ]
[ -verbose [ true | false ] ]
Description
Checks the unbroken distances between opposing edges for effective (maximal) shapes on a layer. The width is considered to be the shorter dimension of a shape and is compared with discrete widths given in a one-dimensional table. A violation occurs if the measured width cannot be found in the table.
To use this command, you must first set the discreteWidth layer constraint, and you can optionally set the length parameter to exclude from checking any shapes shorter than the given length.
Arguments
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-annotate [all | none | dim | rect]
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Chooses whether to mark violations with annotations. The annotations are added to the annotation:violation purpose of the given layer and are listed by layer under WidthChecks—Discrete Width Checks in the Violations page of the Annotation Browser.
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all
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(Default) Creates rectangle and dimension annotations where violations occur.
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none
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Prevents annotations from being created.
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dim
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Creates only dimension annotations to show measurements where violations occur.
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rect
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Creates only rectangle annotations where violations occur.
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-annotation_limit i_count
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Specifies the maximum number of violations to create annotations for. By default, up to 1000 annotations are created. Specify -annotation_limit -1 to choose no limit.
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-clear_annotations
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Removes existing violation annotations of the same check type and input layers before performing this check. If not specified, existing violations are not cleared.
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-lpp s_layerlpp
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Specifies the list of layers and/or layer purpose pairs to check.
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-output_lpp s_lpp
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Specifies the layer purpose pair to which violating shapes will be added.
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-region {f_xlo f_ylo f_xhi f_yhi}
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Specifies the boundary points for the area to check. If not specified, the entire design in the active artwork window is checked.
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-threads i_threads
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Specifies the number of threads or processors to use in parallel to run this command. By default, if multi-threading has been enabled, the session threads are used, otherwise, one processor is used.
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-top_level_only
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Specifies that top-level shapes and shapes connected to top-level shapes be checked. By default, all shapes are checked.
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-trim_corners
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Specifies that corners be trimmed for checking.
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-verbose
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Outputs a message for each error found during the check.
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Examples
The following example limits discrete width checking to Metal1 shapes that are longer than 3.5 user units. Violating shapes have widths (the shorter dimension) other than 0.20, 0.30, 0.4 or 1.00 user units.
set_constraint_parameter -name length -Value 3.5
set_layer_constraint -layer Metal1 -constraint discreteWidth -hardness hard
-OneDTblValue {0 0.20 1 0.30 2 0.4 3 1.00}
check_discrete_width -region [get_window_area] -lpp Metal1
Running discete width check
Metal1:ALL -- 2 (between 0 and 0.2 microns) discrete width violations found.
Metal1:ALL -- 0 (between 0.2 and 0.3 microns) discrete width violations found.
Metal1:ALL -- 0 (between 0.3 and 0.4 microns) discrete width violations found.
Metal1:ALL -- 0 (between 0.4 and 1.00 microns) discrete width violations found.
check_discrete_width completed in = 0.0s/0.0s/0.0s
2
Related Topics
Verify Commands
check_width
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