Issue link: https://resources.pcb.cadence.com/i/1180266
Working with Design Partitions
Design Partitioning
October 2019 17 Product Version 17.4-2019
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group (window) selection of one or more guideports. There is a restriction that all guideports
in a group selection must be located on the same partition boundary segment. If a selected
guideport is part of a diff pair, then the associated diff pair mate guideport is added to the
selection, provided that the Auto-Select Diff Pair Mate option is enabled.
Figure 1-6 Guideports
Guideports snap to the partition boundary when you move or spread them. These actions
also consider the current settings of the spacing criteria options. The master designer can
specify the spacing criteria to be the Default Grid, the Minimum Line-to-Line Spacing by
Net, or a user-defined value. The master designer can also choose to ignore all spacing
rules. When a two or more guideports are in the selection set, the geometric midpoint of the
selection extents is used as the anchor and the seed point for implementing the selected
spacing requirement. Working outward in both directions from this anchor point, the algorithm
adjusts the locations of the guideports according to the spacing criteria until each is satisfied,
or the end of the partition boundary segment is reached.
Tip
When creating boundaries or adding guideports, set the grid to a multiple of the
routing grid.
Interfacing at the Boundaries – The process of routing connections to the boundaries
requires some discipline and communication across the team. There may be times when two
designers attempt to route signals to a shared boundary only to find out they are on separate
layers. The layer set functionality can help minimize the chance of layer misalignment.
A layer set can be made up of 1 to