APPARATUS, METHOD AND RECORDING MEDIUM FOR DIGITAL CLOCK AND DATA RECOVERY
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United States of America
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Nov 28, 2024
app pub date -
Jan 24, 2024
filing date -
Jan 24, 2024
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Abstract
Proposed is an apparatus for a digital clock and data recovery. The apparatus includes a frequency detector for detecting a high frequency (FH) signal, a low frequency (FL) signal and ultra-high frequency (FUH) signal by determining the relationship between an input data rate and a clock frequency, and generating a continuous frequency up (CFUP) signal and a continuous frequency down (CFDN) signal based on the FH, FL and FUH signals; and a digital loop filter (DLF) for controlling to adjust a clock frequency in a coarse adjustment stage using the CFUP and CFDN signals and to adjust a clock frequency in a fine adjustment stage using the FH and FL signals.
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