Synopsys Timing Constraints And Optimization User Guide 2021 [verified] -

The "Synopsys Timing Constraints and Optimization User Guide 2021" highlights the shift towards automated, intelligent, and concurrent optimization techniques. By properly defining SDC constraints, utilizing advanced PPA optimization features in Design Compiler and ICC2, and adhering to best practices, designers can achieve timing closure faster, even in the most challenging advanced-node designs.

This manual, widely considered a cornerstone of IC implementation, serves as the definitive reference for using industry-standard tools like Design Compiler, IC Compiler, and PrimeTime to constrain and optimize a design’s timing. The 2021 edition continues to provide invaluable insights into static timing analysis (STA), timing constraints, and optimization strategies. This article provides a comprehensive overview of the key concepts, commands, and best practices from that guide.

Are you primarily focusing on or sign-off timing (PrimeTime) ? synopsys timing constraints and optimization user guide 2021

: Support for thermal-aware, aging-aware, and IR-aware timing to account for nanometer-scale physical effects. Multi-Input Switching (MIS)

Balancing timing requirements with

Not all paths should be constrained by a single clock period. The user guide explains how to use to override default single-cycle timing checks. The primary commands for this are:

for common interfaces (like I2C or SPI)

Buried in Chapter 6 ("Optimizing for High Speed") is a warning that saves countless ECO cycles:

# Reserves 1.5ns of the clock period for external setup and board routing set_output_delay -max 1.5 -clock SYS_CLK [get_ports data_out] Use code with caution. 4. Advanced Timing Constraints: Path Exceptions The "Synopsys Timing Constraints and Optimization User Guide

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

Specifying input and output delays relative to system clocks. The 2021 edition continues to provide invaluable insights