Synopsys Timing Constraints And Optimization User Guide 2021 -

Ensures that the data arrives at the endpoint before the capturing clock edge. It dictates the maximum operating frequency of your design.

Clearly define set_clock_groups for asynchronous domains to prevent unnecessary timing analysis on paths that are logically separated. synopsys timing constraints and optimization user guide 2021

A key point of emphasis in the user guide is . Choosing the wrong method for specifying an exception can lead to long runtimes. For example, when dealing with false paths between two clock domains, applying the exception at the clock level ( -from [get_clocks CLK1] -to [get_clocks CLK2] ) is far more efficient than listing hundreds of individual register-to-register paths. Ensures that the data arrives at the endpoint

When evaluating a report_timing output, inspect these critical metrics: A key point of emphasis in the user guide is

Whether you are using , PrimeTime , or ICC2 , this guide bridges the gap between RTL design and signoff.

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

[ External Device ] ----> ( Input Port ) ----> [ Internal Register ] |--- Input Delay ---| Input Delay Constraints ( set_input_delay )