SYSTEMS AND METHODS FOR REDUCED AREA DELAY LOCKED LOOP

摘要

Various systems and methods (400) for signal synchronization are disclosed. For example, some embodiments of the invention provide methods for reduced area delay signal timing. Such methods include providing a delay lock loop circuit with a plurality of selectable delay elements. The methods further include operating the delay lock loop circuit in a first mode (410) where a program number is established in relation to a reference frequency. The program number corresponds to a number of the plurality of selectable delay elements used to establish a first delay time at the reference frequency. The program number is multiplied by a multiplicand (435), and the product of the multiplication is used while operating the delay lock loop circuit in a second mode (445) to select the number of delay elements utilized in delaying an input signal. In the second mode, an input signal is delayed by a second delay time that is approximately the first delay time multiplied by the multiplicand.