minClusterSpacing (Two layers)

orderedSpacings(
( minClusterSpacing tx_layer1 tx_layer2 
 'widthRange g_widthRange
 'numShapesRange g_numShapesRange 
 'spacingRange g_spacingRange 
 ['centerLineDistance] 
 ['horizontal | 'vertical] 
 ['otherWidthRange g_otherWidthRange] 
 ['groupHorizontal | 'groupVertical]
 ['prl f_prl] 
 g_spacing
)

) ;orderedSpacings

(Virtuoso Advanced Node for Layout Standard) Specifies the minimum spacing between two neighboring clusters or a cluster and other neighboring shapes that may or may not be part of another cluster, on the two specified layers. The shapes in a cluster must be exactly aligned and must satisfy all of the following conditions:

The width of each shape in the cluster must be in the specified width range, widthRange.
The edge-to-edge spacing or the spacing between the centerlines of neighboring shapes in the cluster must be in the specified spacing range, spacingRange.
The number of shapes that satisfy the two conditions listed above must be in the specified number range, numShapesRange.

Optionally, each cluster can be aligned either in the vertical direction or in the horizontal direction. The constraint can also be selectively applied to neighboring non-cluster shapes based on their widths.

Values

tx_layer1

The first layer on which the constraint is applied.

Type: String (layer and purpose names) or Integer (layer number)

tx_layer2

The second layer on which the constraint is applied.

Type: String (layer and purpose names) or Integer (layer number)

f_spacing

The spacing between a cluster and a neighboring shape must be greater than or equal to this value.

If the constraint value is set to zero, the existence of the cluster itself is a violation. As a result, spacing between the cluster and neighboring shapes is not checked.

Parameters

`'widthRange` g_widthRange
	The widths of the shapes in a cluster must fall in this range. Type: Floating-point values specifying a range of widths that trigger the constraint
`'numShapesRange` g_numShapesRange
	The constraint applies only if the number of shapes in a cluster falls in this range. Type: Integer values specifying the minimum and maximum number of shapes that a cluster can contain
`'spacingRange` g_spacingRange
	This spacing between the centerlines of the shapes in a cluster must fall in this range. Type: Floating-point values specifying a range of spacings that trigger the constraint
`'centerLineDistance`
	The spacing is measured from the centerline of the cluster to centerline of the neighboring non-cluster shapes. The intra-cluster spacing is always measured from the centerline, irrespective of whether this parameter is specified. Type: Boolean
`'horizontal \| 'vertical`
	The direction in which spacing is measured. If direction is not specified, spacing is measured in any direction. Type: Boolean
`'otherWidthRange` g_otherWidthRange
	The constraint applies to a non-cluster shape only if its width falls in this range. Type: Floating-point values specifying a range of widths that trigger the constraint
`'groupHorizontal \| 'groupVertical`
	The constraint applies only if a cluster is formed in the specified direction. If the direction is not specified, the cluster can be formed in either direction. Type: Boolean
`'prl` f_prl	The constraint applies only if the parallel run length between the shapes in a cluster and a neighboring non-cluster shape is greater than or equal to this value.

Examples

Example 1: minClusterSpacing with widthRange, numShapesRange, spacingRange, and otherWidthRange

The spacing between a cluster and a neighboring Metal2 shape must be at least 1.4 if the width of the neighboring shape is greater than or equal to 1.2 and less than or equal to 1.5.

The shapes in the cluster must satisfy the following conditions:

The width of each shape in the cluster must be in the range [0.7 0.9].
The number of shapes in the cluster must be at least 3 and at most 4.
The spacing measured between the centerlines of neighboring shapes in the cluster must be in the range [1.3 1.5].

Example 2: minClusterSpacing with widthRange, numShapesRange, spacingRange, centerLineDistance, and otherWidthRange

The spacing measured from the centerline of a cluster to the centerline of a neighboring Metal2 shape must be at least 2.0 if the width of the neighboring shape is greater than or equal to 1.2 and less than or equal to 1.5.

The shapes in the cluster must satisfy the following conditions:

The width of each shape in the cluster must be in the range [0.7 0.9].
The number of shapes in the cluster must be at least 3 and at most 4.
The spacing measured between the centerlines of neighboring shapes in the cluster must be in the range [1.3 1.5].

Example 3: minClusterSpacing with widthRange, numShapesRange, spacingRange, centerLineDistance, otherWidthRange, and groupVertical

The spacing measured from the centerline of a vertical cluster to the centerline of a neighboring Metal2 shape must be at least 2.0 if the width of the neighboring shape is greater than or equal to 1.2 and less than or equal to 1.5.

The shapes in the cluster must satisfy the following conditions:

The width of each shape in the cluster must be in the range [0.7 0.9].
The number of shapes in the cluster must be at least 3 and at most 4.
The spacing measured between the centerlines of neighboring shapes in the cluster must be in the range [1.3 1.5].

Example 4: minClusterSpacing with widthRange, numShapesRange, spacingRange, horizontal, otherWidthRange, and groupVertical

The horizontal spacing between a vertical cluster and a neighboring Metal2 shape must be at least 1.7 if the width of the neighboring shape is greater than or equal to 1.2 and less than or equal to 1.5. The shapes in the cluster must satisfy the following conditions:

The width of each shape in the cluster must be in the range [0.7 0.9].
The number of shapes in the cluster must be at least 3 and at most 4.
The spacing measured between the centerlines of neighboring shapes in the cluster must be in the range [1.3 1.5].

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Virtuoso Technology Data Constraints ReferenceProduct Version IC23.1, November 2023