minCutClassClearance (oacMinCutClassClearance)

Description

This constraint is used to specify clearance between cuts of different classes on different layers.

Different clearance rules are applicable for cuts of different classes. This constraint enables cut class aware clearance rules. The clearance requirements depend on the following factors:

Constraint at a Glance

Constraint type: oaLayerPairConstraint (Symmetric: yes)
Value types: oaInt2DTblValue
Database types: oaDesign, oaTech
Object types: oaAppObject

Values

The following value types are supported by this constraint:

Parameters

The following parameters are supported by this constraint:

Name Value Type Units Default Description
oaConnectivityType
oacConnectivityTypeConstraintParamType		 oaIntValue Enum any

Restricts the constraint to cut shapes of a certain connectivity type.

This parameter is represented by an oaConnectivityType enumeration:

Value Name
oacAnyConnectivityType anyConnectivityType
oacSameNetConnectivityType sameNetConnectivityType
oacContiguousShapesConnectivityType contiguousShapesConnectivityType
oacDirectShapesConnectivityType directShapesConnecitivtyType
oacSameViaConnectivityType sameViaConnectivityType
cutClassCenterToCenter
oacCutClassCenterToCenterConstraintParamType		 oaInt2DTblValue Enum edgeToEdge

The spacing measure type for a given cut class clearance. The table layout is identical to the constraint value table.

This parameter is represented by an oaSpacingMeasureType enumeration:

Value Name
oacEdgeToEdgeSpacingMeasureType edgeToEdge
oacCenterToCenterSpacingMeasureType centerToCenter
cutClassProfile
oacCutClassProfileConstraintParamType		 oaInt2DTblValue DBU 0

Optionally specifies an extension distance applied to cut shapes of certain cut classes before measuring cut spacing. The table layout is identical to the constraint value table. This parameter is only valid if there is no parallel overlap between cut shapes.

parallelRunLength
oacParallelRunLengthConstraintParamType		 oaIntValue DBU 0

The value of this parameter can be defined as follows:

  • If this constraint applies only when there is no parallel run length, the parameter should be set to -1
  • If this constraint only applies when the parallel run length is >=0, the parameter should be set to 0 (Default).
  • If this constraint only applies when the parallel run length is strictly greater than 0, the parameter should be set to 1.
  • If this constraint applies when the parallel run length is greater than a specific value, then the parameter should be set to the value.
cutClassList
oacCutClassListConstraintParamType		 oaValueArrayValue DBU None

Stores the cut class dimensions in an array of oaDualInts, each with the width and length of a cut class.


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