Design Compiler Timing Reports

Example 4.1 Design Showing Flop to Flop Delays 

Report timing -path full -delay max -max paths 5 Design timing 

Startpoint f reg (rising edge-triggered flip-flop clocked by dk) 

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Two useful commands are report.reference and report cell. These commands are helpful when one is required to find the references and instances inferred in a design after compile. For example, if a design comprises two library cells, each of which is used three times, report cell command will list all the six instances and point to the corresponding reference, while the report reference command will list just two references and the number of times each reference is used, as shown below. The distinction between cells, instances and references is extremely significant, particularly when writing dc shell scripts. Shown below are the outputs of the report cell and report reference commands on the netlist discussed in Example 1.6. Notice that the report reference shows just one reference, while the report cell shows four instances or cells. 

Chapter 2 reviews the lessons learned at JACADS. Chapter 3 assesses the adoption of these lessons into the modified baseline process and evaluates the design information available at the time the report was prepared. Chapter 4 presents the results of stakeholder interactions, as well as safety and risk management considerations. Findings and recommendations are provided in each chapter and compiled in Chapter 5. 

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