1.4.2. Sources for Signal Activity Data
The accuracy of the power estimation depends on how representative signal-activity data is during power analysis. The Power Analyzer allows you to specify signal activities from the following sources:
- Simulation results
- User-entered node, entity, and clock assignments
- User-entered default toggle rate assignment
- Vectorless estimation (selected devices)
You can mix and match the signal-activity data sources on a signal-by-signal basis. The following figure shows the priority scheme applied to each signal.
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