184.108.40.206. Using Simulation Signal Activity Data in Power Analysis 220.127.116.11. Signal Activities from RTL (Functional) Simulation, Supplemented by Vectorless Estimation 18.104.22.168. Signal Activities from Vectorless Estimation and User-Supplied Input Pin Activities 22.214.171.124. Signal Activities from User Defaults Only
2.5.1. Complete Design Simulation Power Analysis Flow 2.5.2. Modular Design Simulation Power Analysis Flow 2.5.3. Multiple Simulation Power Analysis Flow 2.5.4. Overlapping Simulation Power Analysis Flow 2.5.5. Partial Design Simulation Power Analysis Flow 2.5.6. Vectorless Estimation Power Analysis Flow
3.4.1. Clock Power Management 3.4.2. Pipelining and Retiming 3.4.3. Architectural Optimization 3.4.4. I/O Power Guidelines 3.4.5. Dynamically Controlled On-Chip Terminations (OCT) 3.4.6. Memory Optimization (M20K/MLAB) 3.4.7. DDR Memory Controller Settings 3.4.8. DSP Implementation 3.4.9. Reducing High-Speed Tile (HST) Usage 3.4.10. Unused Transceiver Channels 3.4.11. Periphery Power reduction XCVR Settings
126.96.36.199. Toggle Rate
The toggle rate of a signal is the average number of times that the signal changes value per unit of time. The units for toggle rate are transitions per second, and a transition is a change from 1 to 0, or 0 to 1.
Note: Inaccurate signal toggle rate data is the largest source of power estimation error.
Dynamic power increases linearly with the toggle rate as you charge the board trace model more frequently for logic and routing. The Intel® Quartus® Prime software models full rail-to-rail switching. For high toggle rates, especially on circuit output I/O pins, the circuit can transition before fully charging the downstream capacitance. The result is a slightly conservative prediction of power by the Power Analyzer.
Note: The transceiver I/O toggle rate is determined by the XCVR data rate value specified in your IP catalog settings. Do not include transceiver I/O toggle rate in the default toggle rates that you specify in the Power Analyzer.
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