: Instructions for create_clock and create_generated_clock to identify primary oscillators and internal clock dividers.
A false path is a path that exists topologically in the netlist but cannot execute logically, or a path that does not need to be timed (e.g., static configuration registers).
Are you focusing on timing closure? Share public link
Design Compiler in 2021 continues to integrate advanced algorithms to balance area and power without sacrificing timing. Strategies for Optimization synopsys timing constraints and optimization user guide 2021
set_clock_transition 0.08 [get_clocks SYS_CLK] set_clock_latency -source 0.4 [get_clocks SYS_CLK] Use code with caution. 4. Constraining Input and Output Interfaces
Once clocks are created, you must define non-ideal characteristics:
What are you using (e.g., Wireload models or Graphical/Topographical mode)? Share public link Design Compiler in 2021 continues
# Declare two clock domains as completely asynchronous set_clock_groups -asynchronous -group SYS_CLK -group TX_CLK RX_CLK Use code with caution. 5. Non-Standard Timing Paths: Exceptions
Based on standard Synopsys documentation frameworks, the content is typically organized into the following functional sections:
A data pin of a sequential element or an output port. Setup vs. Hold Constraints Constraining Input and Output Interfaces Once clocks are
If you want to tailor this information further to your current design, please let me know:
To get the most out of Synopsys' timing constraints and optimization capabilities, designers should follow best practices:
The content in this article is based on notes and summaries from that version. It is important for engineers to always refer to the latest official documentation for their specific tool version, as features and commands are continuously updated. Later versions, like the release used in some community resources, may include changes that supersede the 2021 guide.