Invention Grant
- Patent Title: Limit equalizer output based timing loop
- Patent Title (中): 限制基于均衡器输出的定时循环
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Application No.: US12877779Application Date: 2010-09-08
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Publication No.: US08274413B1Publication Date: 2012-09-25
- Inventor: Jingfeng Liu , Mats Oberg , Zachary Keirn , Bin Ni
- Applicant: Jingfeng Liu , Mats Oberg , Zachary Keirn , Bin Ni
- Applicant Address: BM Hamilton
- Assignee: Marvell International Ltd.
- Current Assignee: Marvell International Ltd.
- Current Assignee Address: BM Hamilton
- Main IPC: H03M1/48
- IPC: H03M1/48

Abstract:
A timing loop for generating a channel clock signal for driving an analog to digital converter (ADC) includes a slicer bias loop configured to generate an asymmetry compensation signal for a digital output signal from the ADC, the first adder configured to asymmetrically compensate the digital output signal based on the asymmetry compensation signal from the slicer bias loop, a limit equalizer configured to limit a boost range of the asymmetrically compensated digital output signal from the adder, a slicer configured to generate a temporary decision signal based on the asymmetrically compensated digital output signal from the limit equalizer, a phase detector configured to generate a timing error signal based on the asymmetrically compensated digital output signal from the limit equalizer and the temporary decision signal from the slicer; and the first filter configured to generate a clock signal for driving the ADC based on the time error signal from the phase detector.
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