allowedSpanLengthRanges

spacings(
( allowedSpanLengthRanges tx_layer 
 ['any | 'horizonal | 'vertical]
 ['mask1 | 'mask2 | 'mask3] 
 ['orthogonalLength f_length]
 ['otherSpanLength f_spanLength  
  | 'otherSpanTable g_1DSpanLengthTable]
 (g_ranges) 
)

) ;spacings

Specifies all allowable span lengths on a routing layer.

Values

tx_layer	The layer on which the constraint is applied. Type: String (layer and purpose names) or Integer (layer number)
g_ranges	The span lengths that are allowed. Type: Floating-point values specifying a range of span lengths

Parameters

'any | 'horizontal | 'vertical
	The direction in which the span length is measured. Type: Boolean
'mask1 | 'mask2 | 'mask3
	The mask that the triggering wires of this rule belong to. Type: Boolean
'orthogonalLength f_length
	The distance between two inside-facing corners must be greater than or equal to this value.
'otherSpanLength f_spanLength | 'otherSpanTable g_1DSpanLengthTable
	(Virtuoso Advanced Node for Layout Only) The constraint applies only when the rectShapeDir constraint is specified for the layer and if either of the following conditions applies: The span length measured in a direction perpendicular to the specified direction is greater than or equal to f_spanLength. The span length measured in a direction orthogonal to the specified direction is less than or equal to the table with the g_1DSpanLengthTable index. The table is valid only for indexes below the last row. The parameter does not apply for orthogonal span lengths greater than or equal to the index of the last table row.

Examples

• Example 1: allowedSpanLengthRanges with horizontal, vertical, and orthogonalLength
• Example 2: allowedSpanLengthRanges with horizontal, vertical, and otherSpanLength
• Example 3: allowedSpanLengthRanges with horizontal, vertical, and otherSpanTable

Example 1: allowedSpanLengthRanges with horizontal, vertical, and orthogonalLength

The constraint is satisfied if the following conditions are met for a rectilinear object on Metal2:

• The span length measured vertically is either equal to 0.1, 0.15, or 0.2 or greater than 0.3 and less than 15, and the distance between two inside-facing corners is greater than or equal to 0.13.
• The span length measured horizontally is either equal to 0.15 or 0.25 or greater than 0.4 and less than 15.
  
  

Example 2: allowedSpanLengthRanges with horizontal, vertical, and otherSpanLength

The constraint is satisfied if the following conditions are met for a rectangular object on Metal2:

• The span length measured vertically is either equal to 0.05, 0.06, 0.07, 0.08 or 0.09 or greater than 0.1 and less than 15.
• The span length measured horizontally is either equal to 0.07 or greater than 0.1 and less than 15. However, this condition is checked only if the span length measured vertically is greater than 0.05.
  
  

Example 3: allowedSpanLengthRanges with horizontal, vertical, and otherSpanTable

The constraint is satisfied if the following conditions are met for a rectangular object on Metal2:

• The span length measured vertically is either equal to 0.04, 0.05, 0.06, 0.07, 0.08, or 0.09 or greater than 0.1 and less than 15.
• The span length measured horizontally is either equal to 0.07 or greater than 0.1 and less than 15, except in these cases:
  • If the vertical edge is less than or equal to 0.04, the horizontal span length must be greater than or equal to 0.09.
  • If the vertical edge is less than or equal to 0.06, the horizontal span length must be greater than or equal to 0.08.
    
    

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