Invention Grant
- Patent Title: Signaling with superimposed clock and data signals
- Patent Title (中): 信号叠加时钟和数据信号
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Application No.: US12128584Application Date: 2008-05-28
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Publication No.: US08149972B2Publication Date: 2012-04-03
- Inventor: Aliazam Abbasfar , Amir Amirkhany , Bruno W. Garlepp
- Applicant: Aliazam Abbasfar , Amir Amirkhany , Bruno W. Garlepp
- Applicant Address: US CA Sunnyvale
- Assignee: Rambus Inc.
- Current Assignee: Rambus Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Morgan, Lewis & Bockius LLP
- Main IPC: H04L7/00
- IPC: H04L7/00

Abstract:
A data receiver circuit includes an interface to receive an input signal that includes a data signal and a clock signal superimposed on the data signal. The data signal has an associated symbol rate and an associated symbol period equal to the reciprocal of the associated symbol rate. The clock signal has a frequency N times the associated symbol rate, where N is an integer. A phase-locked loop (PLL) coupled to the interface extracts the clock signal from the input signal to provide an extracted clock signal. A phase interpolator adjusts the phase of the extracted clock signal to provide a phase-adjusted extracted clock signal. A sampling circuit samples the data signal at a sampling point. The sampling circuit is synchronized to the phase-adjusted extracted clock signal.
Public/Granted literature
- US20080297213A1 Signaling with Superimposed Clock and Data Signals Public/Granted day:2008-12-04
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