2011年9月3日 星期六

PrimeTime再了解(三)

Static Timing Analysis Commands

update_timing
Updates timing for the current design and  prepares the
design for further analysis
Some commands such as report_timing or report_constraint 
automatically call update_timing if needed

report_bottleneck (PT only)
Reports the common point in the design that contributes to
multiple violations

report_constraint (DC可用)
By default will return the synthesis cost function with all costs, weights and weighted costs
Can report all violators for max/min timing and DRC verbose switch is not recommended
  -verbose switch is not recommended 


report_timing
By default shows the worst max path per path group
report_timing -exceptions all (DC可用)
2006.06 feature – The exceptions option names exceptions (mutli-cycle paths, and
min/max delays) that are related to the reported timing path


report_delay_calculation
Shows the delay calculation for a pin-to-pin timing arc
Library needs to be enabled for delay calculation reports

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