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1.3.2.1. Using Simulation Signal Activity Data in Power Analysis
1.3.2.2. Signal Activities from RTL (Functional) Simulation, Supplemented by Vectorless Estimation
1.3.2.3. Signal Activities from Vectorless Estimation and User-Supplied Input Pin Activities
1.3.2.4. Signal Activities from User Defaults Only
1.5.1. Complete Design Simulation Power Analysis Flow
1.5.2. Modular Design Simulation Power Analysis Flow
1.5.3. Multiple Simulation Power Analysis Flow
1.5.4. Overlapping Simulation Power Analysis Flow
1.5.5. Partial Design Simulation Power Analysis Flow
1.5.6. Vectorless Estimation Power Analysis Flow
2.4.1. Clock Power Management
2.4.2. Pipelining and Retiming
2.4.3. Architectural Optimization
2.4.4. I/O Power Guidelines
2.4.5. Dynamically Controlled On-Chip Terminations (OCT)
2.4.6. Memory Optimization (M20K/MLAB)
2.4.7. DDR Memory Controller Settings
2.4.8. DSP Implementation
2.4.9. Reducing High-Speed Tile (HST) Usage
2.4.10. Unused Transceiver Channels
2.4.11. Periphery Power reduction XCVR Settings
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2.4.1.1. Clock Gating
For designs containing logic that is not operational 100% of the time, you can reduce power consumption by gating (disabling) the clock that feeds that logic.
This solution requires that the logic in question have its own dedicated clock source. Clock duplication (such as introducing a duplicate PLL clock output) is necessary if the logic in question does not have its own dedicated clock source.
The following topics describe methods for gating clock networks.