The primary objective of the timing engine is to ensure that data arrives at the capture point early enough to meet the setup time requirement, but late enough to prevent violating the hold time requirement. 2. Establishing the Clock Network
# Allow 3 clock cycles for data setup along a multiplier path set_multicycle_path 3 -setup -from [get_pins mult_reg*/CP] -to [get_pins accum_reg*/D] # Adjust the corresponding hold check to happen 1 cycle after the launch edge set_multicycle_path 2 -hold -from [get_pins mult_reg*/CP] -to [get_pins accum_reg*/D] Use code with caution. 5. Design Optimization Strategies
Static Timing Analysis evaluates the delay of a digital circuit without simulating its actual functionality. It calculates the data propagation delay along all logical paths and compares it against the clock requirements. Timing Paths synopsys timing constraints and optimization user guide 2021
-max : Used for setup analysis (tells the tool how late data can arrive).
In advanced digital design, meeting timing closure is the most critical hurdle for Application-Specific Integrated Circuit (ASIC) and System-on-Chip (SoC) engineers. Synopsys tools, led by Design Compiler (DC) for synthesis and PrimeTime for Static Timing Analysis (STA), dictate the industry standard for timing closure. The primary objective of the timing engine is
: Identifying paths that do not need to meet timing (e.g., static signals, asynchronous crossings) using set_false_path Multicycle Paths
The guide provides best practices for leveraging multicore processing. It details the set_host_options command and explains how the optimization engine partitions the design graph for parallel processing. The 2021 updates highlight improvements in the "incremental compile" flow, allowing engineers to make Timing Paths -max : Used for setup analysis
Design Compiler in 2021 continues to integrate advanced algorithms to balance area and power without sacrificing timing. Strategies for Optimization
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