The TRCE (Trace) reports contain "Preliminary" or "Advanced" timing values. What do these values mean?
In a Trace report, the "Speed" line can include the words "Preliminary" or "Advanced". These designations refer to the speed file used in the analysis, and they indicate that the speed values are based on preliminary characterization. This also indicates that the speed files might change in future software releases.
Advanced measurements are simulated (SPICE) before any silicon is returned.