All posts tagged "timing"

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  Back End

  Common 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...

• 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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  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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  Physical Design

  set_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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  Physical Design

  SPEF 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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  Back End

  Reading 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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  Physical 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...