Process Rule Override Editor: DiffPair Form
To open the Process Rule Override Editor: DiffPair form, double-click a diffpair constraint in the DiffPair column on the Nets tab. Alternatively, double-click a diffpair constraint in the DiffPair column on the DiffPair tab.
The Process Rule Override Editor: DiffPair form has the following components:
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Toolbar
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Lets you copy and delete a constraint.
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Fields
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Lets you specify the options for bus constraints.
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Toolbar
The following table lists the functions of the different buttons on the Process Rule Override Editor: DiffPair form toolbar.
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Icon
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Command
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Description
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Copy Constraint Group
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Lets you copy the constraint group.
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Delete Constraint Group
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Lets you delete the constraint group.
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Fields
The Process Rule Override Editor: DiffPair form lets you specify the options for bus constraints.
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Field
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Description
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Group Name
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Lets you specify the group name for the constraint.
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Constraint Group Name
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Lets you select a constraint group to use for seeding the values.
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# Via Cuts
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Specifies the number of cuts for each cut layer matching a valid via.
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Tolerance
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Lets you specify absolute tolerance when matching shield lengths.
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Same Mask
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Lets you select the same mask option. The same mask options are determined by the number of masks per layer defined in a given technology file. A minimum of 0 and a maximum of 3 options are available.
An empty value in the Same Mask field indicates that the group has no same mask constraints.
The value any appears as an option in the Same Mask field regardless of the number of masks defined in the technology file.
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Top Layer
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Lets you select the preferred top routing layer.
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Bottom Layer
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Lets you select the preferred bottom routing layer.
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Width/Space
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Toggles to display the width and spacing layer table.
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Layer
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Displays the name of the layer.
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Min W
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Lets you specify the minimum width to be used for the layer.
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Max W
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Lets you specify the maximum width to be used for the layer.
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Min S
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Lets you specify the minimum spacing to be used for the layer.
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Related Topics
Opening Routing Constraint Manager
Virtuoso Routing Constraint Manager
Routing Constraint Manager User Interface
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