minEndOfLineExtensionSpacing

Specifies the minimum spacing between an end-of-line edge of a given width and neighboring wire edges when a specified extension must be applied to the end-of-line before the spacing is checked.The constraint can also specify an extension that must be applied to the neighbor wire, when the neighbor wire is an end-of-line of a given width, before spacing is checked. You can use optional parameters to specify when the constraint does not apply, based on the length of the sides of the wire adjacent to the end-of-line edge.

minEndOfLineExtensionSpacing Quick Reference

Value Type

The minEndOfLineExtensionSpacing constraint has a Value that represents the spacing in user units.

Parameters

• extensionSpacing (Dual1DTblValue, required) is two 1-D tables of values. The first table has end-of-line width (eolWidth)/extension pairs for end-to-side cases and the second table has eolWidth/extension pairs for end-to-end cases.
  For each end-of-line, find the last pair for which the end-of-line width is less than (<) eolWidth, in user units, to determine the extension that must be applied to the end-of-line edge before spacing is checked.
• length (Value, optional) with the twoSides parameter, specifies when the constraint applies based on the side lengths of the end-of-line.
• twoSides (BoolValue, optional) applies only when the length parameter is given and determines when the constraint applies as follows:
  

  length with twoSides false or not given	The constraint applies when at least one side of the end-of-line is greater than or equal to length. (The constraint does not apply if both sides of the end-of-line are less than length.)
  length with twoSides true	The constraint applies when both sides of the end-of line are greater than or equal to length. (The constraint does not apply if either side of the end-of-line is less than length).

Examples

In this example, the minimum spacing between an end-of-line and a neighboring wire is 0.1 when extensions are applied under the following conditions:

set_constraint_parameter -name extensionSpacing \
 -OneDTblValue  {0.11 0.14 0.15 0.12} \ 
 -OneDTblValueB {0.11 0.00 0.15 0.13} 
set_layer_constraint -layer Metal2 \
 -constraint minEndOfLineExtensionSpacing -Value 0.1 

EOLEXTENSIONSPACING 0.1 
 ENDOFLINE 0.11 EXTENSION 0.14 
 ENDOFLINE 0.15 EXTENSION 0.12 ENDTOEND 0.13 ;

Related Topics

Spacing Constraints

minEndOfLinePerpSpacing

minEndOfLineSpacing