| 摘要 |
An apparatus for producing a clock signal includes a recirculating delay-locked loop operable to receive a reference clock signal, produce an output clock signal, and adjust the relative phase, with respect to the reference clock signal, of the output clock signal to align the output clock signal with the reference clock signal. The apparatus also includes a phase filter that is operable to receive the output clock signal and filter any phase shift of the output clock signal over a plurality of cycles of the output clock to produce an adjusted output clock signal.
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