Synopsys Timing Constraints And Optimization User Guide 2021 [DELUXE ◉]

: Leveraging clock gating and multi-threshold CMOS (MTCMOS) cells to reduce both dynamic and leakage power during the timing-closure process. 4. Advanced Features in the 2021 Release

: Moving registers across combinational logic boundaries to balance path delays without changing the design’s functionality.

: A dedicated environment to verify, generate, and manage SDC files throughout the design cycle to prevent "garbage in, garbage out" scenarios. 5. Best Practices for Timing Closure To achieve faster turnaround times, the guide recommends: synopsys timing constraints and optimization user guide 2021

: Start with "loose" constraints to explore the design space, then tighten them as the physical floorplan matures.

: Optimizing logic across hierarchical boundaries to remove redundant gates and improve timing. : Leveraging clock gating and multi-threshold CMOS (MTCMOS)

: When the standard single-cycle timing model is too restrictive, exceptions are used:

: The guide explains how to interpret "slack"—the difference between the required arrival time and the actual arrival time. A negative slack indicates a timing violation that must be addressed through optimization. : A dedicated environment to verify, generate, and

The 2021 guide emphasizes PrimeTime as the industry "golden" signoff tool.

: Logic that intentionally takes more than one clock cycle to complete. 2. Static Timing Analysis (STA) with PrimeTime

: Users are guided on choosing between Graph-Based Analysis (GBA) for speed and Path-Based Analysis (PBA) for higher accuracy during the final signoff stages. 3. Optimization Strategies