A method of forming a trench structure that includes forming a metal containing layer on at least the sidewalls of a trench, and forming an undoped semiconductor fill material within the trench. Upon updating of a block of the primary representative Z value memory, one or more corresponding values are calculated for updating the reduced-resolution representation. The common mode voltage of the reference signals preferably tracks the common mode voltage of the differential high-speed serial data signal being processed by the comparator circuit. The user interface server initiates a user interface production unit which takes the control signals as a basis for generating user-specific elements for the user interface.