Constraining Routing Manually (Beta)

With Efinity software v2022.2 and higher, the router lets you manually constrain routing traces. This feature is beta.

After you compile your design once, you can lock down (or constrain) specific nets to specific paths. For any future compilations, the software routes these constrained nets in the same way. To constrain nets, you also need to constrain the logic to which the nets connect. See Constraining Logic and Routing Manually (Beta) for information on making logic constraints.

You can combine constrained logic and constrained routing to preserve the placement and routing of a small part of your design, letting the rest change as you compile. This feature can be useful when logic (such as a sampling delay line) with very specific routing requirements must be locked down early in the design cycle. Additionally, this feature lets you preserve place and route for connections that have difficult timing constraints.