Fish & Neave IP Group of Ropes & Gray LLP
Digital frequency-multiplying DLLs
Digital delay-locked loops (DLLs) and methods are provided for signal frequency multiplication. Analog delay elements of typical frequency-multiplying DLLs are replaced with digital and digitally-controlled elements including a variable delay line. The number of unit delay elements in the delay line can be selected to produce a desired output signal delay. Phase-mixing of multiple variable delay line outputs achieves finer delay-time adjustments.
Micron Technology, Inc.
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Seong-hoon
Lee