maxExtension

orderedSpacings(
( maxExtension tx_layer1 tx_layer2 
 f_extension
)

) ;orderedSpacings

spacingTables(
( maxExtension tx_layer1 tx_layer2
 (( "width" nil nil )
  [f_default]
 )
 g_table
)

) ;spacingTables 

Specifies the maximum extension of the shape on the first layer past the shape on the second layer.

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_extension	The extension must be less than this value.
"width" nil nil
	This identifies the index for table.
g_table	The format of the table is as follows: (f_width f_extension) where, f_width is the width of the layer1 shape. The width of the layer1 shape must be greater than this value for the corresponding extension value to apply. f_extension is the extension of the layer1 shape past the layer2 shape. The extension must be less than this value. Type: A 1-D table specifying floating-point width and extension values

Parameters

f_default

The extension value to be used when no table entry applies.

Examples

• Example 1: maxExtension
• Example 2: maxExtension with 1-D table

Example 1: maxExtension

The extension of a Metal1 shape past a Metal2 shape must be less than 3.0.

orderedSpacings(
    ( maxExtension "Metal1" "Metal2" 
     3.0)
 )
) ;orderedSpacings

Example 2: maxExtension with 1-D table

The extension of a Metal2 shape past a Via2 shape must be as follows:

• Less than 0.21 if the width of the Metal2 shape is greater than 0.0
• Less than 0.22 if the width of the Metal2 shape is greater than 0.1

spacingTables(
    ( maxExtension "Metal2" "Via2" 
     (( "width" nil nil ))
  (
    0.0 0.21
    0.1 0.22
  )
 )
) ;spacingTables

Return to top