All posts tagged "timing"
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1.6KBack EndCommon Path & Clock Reconvergence Pessimism Removal
Many a time your chip is overdesigned due to undue pessimism in timing calculations. Pessimism in timing analysis makes it difficult for...
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Back End
Standard Delay Format
SDF file is how you represent your circuit delays. We have earlier seen SPEF format which is the circuit’s RC representation. SDF...
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Back End
set_clock_uncertainty
There is the SDC command “set_clock_uncertainty” and there is the question of what clock uncertainty means. The SDC manual states that set_clock_uncertainty...
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3.5K8Physical Designset_timing_derate
set_timing_derate set_timing_derate is a command that lets you constraint the timing a bit more. The idea and application is simple enough, but...
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3.1K19Physical DesignSPEF Files Explained
Standard Parasitic Exchange Format(SPEF) is an IEEE format for specifying chip parasitics. The specification for SPEF is a part of standard 1481-1999...
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2.7K20Back EndReading ICC Timing Reports
At any stage of the design you will be reporting timing. You can use your PnR tool to report the timing after...
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2.8K18Physical Design
Synopsys Design Constraints
Timing closure is the big whale for most P&R designers. You get it done, and then you can wash your hands off...