A PROGRAMMABLE DIRECT INTERPOLATING DELAY LOCKED LOOP

摘要

Embodiments of the invention provide for a DLL architecture including a coarse-fine type arrangement using one loop for non-continuous strobe that can be also be adapted for continuous clocks as well. In particular, a reference loop establishes precise coarse unit delay. A slave delay line duplicates unit delay. A phase interpolator interpolates between unit delay to produce fine delay.