Definition

Specifies the via control parameters that define how vias must be positioned and aligned on trunks and twigs.

Values

• l_layerNames
  Specifies the layers to which the constraint must be applied.
• x_viaControlStatus
  Specifies whether the via control parameters can be specified.

Parameters

• viaControlOrient
  Specifies the default via orientation. The bounding box of the via cuts is aligned along the specified direction. For example, a via with two cuts is rendered top-down if the via orientation is set to Vertical.
  Type: String
  Valid Values: (Horizontal, Vertical, None)
  Default: None
• viaControlInline
  Prefers vias that are fully enclosed or in line with the wire.
  Type: Boolean
  Valid Values: (1, 0) or (t, nil)
  Default: 0
• viaControlOffset
  Honors the via offset values specified.
  Type: Boolean
  Valid Values: (1, 0) or (t, nil)
  Default: 0 or nil

• viaControlExtensionOrient
  Specifies the preference of the via extension or enclosure orientations. For vias with multiple cuts, a higher preference is given to vias with cut boxes lining up in a certain direction. Therefore, a vertical-cut bounding box via may have a horizontal extension. This means that the extended metal portion over the cut bounding box in the horizontal direction is larger than that in the vertical direction.
  Type: String
  Valid Values: (Horizontal, Vertical, None)
  Default: None
• viaControlCutClass
  Specifies the width and height of the associated cut classes.
  Type: List
  Valid Values: A list of two floating-point numbers, for example '(0.032 0.032).
  Default: '(0 0)

Applies To

• Twig constraints