A circuit for adjusting a time when data is delivered to a data terminal with respect to an external clock signal includes a data passing circuit and a delay adjusting circuit. The delay adjusting circuit accepts a plurality of control signals each arranged to control passgates arranged in columns, with...http://www.google.com/patents/US6499111?utm_source=gb-gplus-sharePatent US6499111 - Apparatus for adjusting delay of a clock signal relative to a data signal
