One of the major themes in the 2021 documentation is the reduction of "false violations"—timing violations that aren't actually bottlenecks, often caused by incorrect or incomplete SDC files. Key Optimization Steps
# Create a divide-by-2 clock generated from SYS_CLK at register output 'clk_div_reg/Q' create_generated_clock -name DIV_CLK \ -source [get_ports clk_in] \ -divide_by 2 \ [get_pins clk_div_reg/Q] Use code with caution. Clock Properties: Skew, Jitter, and Latency synopsys timing constraints and optimization user guide 2021
Ensures that the data remains stable long enough after the capturing clock edge to prevent race conditions. It is independent of clock frequency. 2. Establishing the Clock Network One of the major themes in the 2021
Let the tool manage uncertainty based on clock relationships. It is independent of clock frequency
Ensures that the data does not change too quickly after a clock edge, which would corrupt the captured value. Hold violations are often caused by excessively short combinational logic paths.