Invention Grant
US08823429B1 Data transition density normalization for half rate CDRs with bang-bang phase detectors 有权
具有爆轰相位检测器的半速率CDR的数据转换密度归一化

Data transition density normalization for half rate CDRs with bang-bang phase detectors
Abstract:
A clock and data recovery circuit includes a phase detector circuit, a charge pump circuit, and a voltage controlled oscillator. The phase detector circuit receives a data signal from an external device and a clock signal from the voltage controlled oscillator and generates a first and a second phase difference signal. The charge pump circuit includes an OR gate receiving on its inputs the first and the second phase difference signals and configured to generate a current if the first and/or second phase difference signal is high.
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