Invention Grant
US08385493B2 Method and apparatus for improving linearity in clock and data recovery systems
有权
提高时钟和数据恢复系统线性度的方法和装置
- Patent Title: Method and apparatus for improving linearity in clock and data recovery systems
- Patent Title (中): 提高时钟和数据恢复系统线性度的方法和装置
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Application No.: US12755522Application Date: 2010-04-07
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Publication No.: US08385493B2Publication Date: 2013-02-26
- Inventor: Christopher Abel , Joseph Anidjar , Vladimir Sindalovsky , Craig Ziemer
- Applicant: Christopher Abel , Joseph Anidjar , Vladimir Sindalovsky , Craig Ziemer
- Applicant Address: US DE Wilmington
- Assignee: Agere Systems LLC
- Current Assignee: Agere Systems LLC
- Current Assignee Address: US DE Wilmington
- Agency: Mendelsohn, Drucker & Associates, P.C.
- Agent David L. Cargille; Steve Mendelsohn
- Main IPC: H04L7/02
- IPC: H04L7/02

Abstract:
Disclosed is a system and method for improving the linearity of a clock and data recovery (CDR) circuit. In one embodiment, a data stream is received, and the phase of a clock signal is adjusted using two interpolators. The phase of the output signal of the second interpolator is adjusted simultaneously with, and complementary to, adjusting the phase of the first interpolator. The first interpolator's output signal is injected into a first delay cell in a delay loop having a plurality of delay cells, and the output of the second interpolator is inactivated. When the maximum phase of the first interpolator's output signal is reached, the second interpolator's output signal is injected into another one of the delay cells, and the first interpolator's output signal is inactivated. The data stream is then recovered using the output of the delay loop as a clock signal.
Public/Granted literature
- US20100195777A1 METHOD AND APPARATUS FOR IMPROVING LINEARITY IN CLOCK AND DATA RECOVERY SYSTEMS Public/Granted day:2010-08-05
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