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more accurate cell delays, and CCS timing and CCS noise models must be supplied for this analysis.

KEY AWP models receiver-input waveform distortion (Miller, long-tail) for accurate cell delay, needing CCS timing and noise models.

Problems from a Higher Input Transition

  • It produces a higher output transition.
  • It increases the cell delay.

KEY A higher input transition leads to higher output transition and larger cell delay.

What Needs Resetting in a Design

For power-related errors, reset the UPF and reload it: reset_upf followed by load_upf ORCA_TOP.upf.

For an operating-condition mismatch, check the app variable and set continue_on_operating_mismatch to true with set_app_var.

If cells overlap after placement, clear the constraints and scenarios - remove_sdc, remove_scenario -all, re-source the MMMC scenario file, and run remove_pnet_options.

KEY Reset UPF for power errors, allow operating-condition mismatch, and clear SDC/scenarios/pnet options for placement overlaps.

Priority Among DRV, Setup and Hold

DRVs must be fixed - they cannot be left, and sequential data pins in particular carry tighter transition limits.

Setup priority depends on the frequency target of the design.

Hold must also be fixed, because hold violations will cause the design to fail outright.

KEY DRVs and hold must always be fixed; setup priority depends on the frequency target.