Non-FD High Fanout Nets > 10K - 2023.2 English

Vivado Design Suite User Guide: Design Analysis and Closure Techniques (UG906)

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2023.2 English

This section reports signals that have a fanout greater than 10K but are not driven by a flip flop. Nets that drive a high fanout should have a driver profile that allows replication to be carried out without impacting the pre-path timing. This allows the replicated cell to be more freely placed next to the loads. If there are source constraints, the placement of replicated cells get clustered together and reduce the effectiveness of the technique.

In the details section, further details such as the load types, information on the driver profile and the net name are captured. The timing information on this signal is not captured. If the path is a false path or has a very low requirement, it can be ignored.