Further Refining Control Signal Activity - 2021.2 English

Vivado Design Suite User Guide: Power Analysis and Optimization (UG907)

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2021.2 English

When SAIF-based annotation has not been used for accurate power analysis, you can fine-tune the power analysis after doing the first level analysis. Report Power extracts and lists all the different control signals in the Signal view. You may know from the expected behavior of your application that some Set/Reset signals are not active in normal design operation. In that case, you may want to adjust the activity for these signals. Similarly, some signals in your application may disable entire blocks of the design when the blocks are not in use. Adjust their activity according to the expected functionality. Because synthesis tool and place and route algorithms can infer or remap control signals to optimize your RTL description, many of the signals listed in these views may be unfamiliar. If you unsure of what these signals are, let the tool determine the activity.