We use a rule-based layout when working with digital circuits and mixed digital and analog circuits on PC boards. We set up rules for trace impedances, distances, lengths, etc... By systematically setting up rules based on calculations of termination, reflections, cross talk, ground-bounce, supply ripple, and more, we are able to eliminate the risk of signal integrity issues.
Axcon has provided SI service for various Danish PCB layout companies. We assist in layouts for projects of all sizes from simple to advanced high-speed boards.