Intel® Quartus® Prime Pro Edition User Guide: Design Optimization

ID 683641
Date 12/04/2023
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6.3.2.3. Defining Routing Regions

A routing region is an element of a Logic Lock region that specifies the routing area. A routing region must encompass the existing Logic Lock placement region. Routing regions cannot be set as reserved. To define the routing region, double-click the Routing Region cell in the Logic Lock Regions window, and select an option from the drop-down menu.
Figure 116. Routing Regions


Table 42.  Routing Region Options

Option

Description

Unconstrained (default) Allows the Fitter to use any available routes on the device.
Whole Chip Same result as Unconstrained, but writes the constraint in the Intel® Quartus® Prime settings file (.qsf).
Fixed with Expansion Follows the outline of the placement region. The routing region scales by a number of rows and columns larger than the placement region.
Custom Allows you to define a custom shape routing region around the Logic Lock region. When you select the Custom option, the placement and routing regions move independently in the Chip Planner. In this case, move the placement and routing regions by selecting both using the Shift key.