Cadence PCB Best Practices

Working with Real-Time DFA Analysis

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Working with Design Partitions Design Partitioning October 2019 11 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. import or retract all exported .dpf files. This action allows the master designer to regain ownership of the design database. Shape-Based Areas – Choose Place – Design Partitions – Create Partitions. In Allegro PCB Editor, click the right mouse button to add either a rectangle or polygon shape. The line lock is limited to Line only; arcs are not permitted on the partition boundaries. Angle choices include 90, 45, or Off. Partition boundaries cannot overlap each other; however, they can coincide. Because shape boundaries do not snap, a course grid setting is advised during the creation and editing process to prevent small gaps between partition areas. Boundary edges can be modified by using the commands associated with the dynamic shape application. Figure 1-1 on page 11 shows an example of three partition areas. The area in yellow is a room which the master can convert to a partition area. Partition areas are stored as boundary objects in the database. Figure 1-1 Shape-based Partitions Construction Slice Lines – From the Create Partitions command, draw a line in the horizontal or vertical direction. The command window prompts you to add partition cut lines and apply when complete. Although these lines extend to the drawing extents, it is not necessary to physically draw them in that manner. Once your lines are in place, click the Apply button located in the Options tab to generate the partition areas. At this point, the master cannot create subsequent partition areas. Figure 1-2 on page 12 shows the cut lines as they appeared prior to the apply step.

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