Modern-day multifunctional devices support aggressive, multiple timing variations in their designs. All timings must be perfectly aligned to get the design up and running fast, without any intermittent failures in the resulting PCBs.
For high speed DDR memories, perfect timing and compensation for any latency between clock lines and address lines is key to guarantee fast, stable and reliable memory operation at the maximum speed supported. Differences in trace lengths, the use of vias and cross talk all influence timing for high speed designs.
To design out any timing disturbances and avoid intermittent failures in the product, timing analysis and verification early in the design phase is key.