Invention Grant
- Patent Title: Deserialized dual-loop clock radio and data recovery circuit
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Application No.: US14871719Application Date: 2015-09-30
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Publication No.: US09716582B2Publication Date: 2017-07-25
- Inventor: Mehrdad Ramezani , David J. Cassan , Christopher D. Holdenried , Sang-Wook Paul Park , Marcus van Ierssel
- Applicant: Rambus Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: Rambus Inc.
- Current Assignee: Rambus Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: The Neudeck Law Firm, LLC
- Main IPC: H04L7/00
- IPC: H04L7/00 ; H04L25/03 ; H04L7/033

Abstract:
A clock and data recovery circuit (CDR) includes a digitally controlled oscillator (DCO). A data sampler is coupled to receive a clock signal from the DCO. A deserializer includes an input coupled to an output of the data sampler. A first phase detector is coupled between a first output of the deserializer and a first input of the DCO. A second phase detector is coupled to a second output of the deserializer. An accumulator is coupled between an output of the second phase detector and a second input of the DCO. A frequency lock detection block is coupled to an output of the accumulator. An eye monitor is coupled to an input of the data sampler. The first phase detector controls a delay of the DCO and the accumulator controls a frequency of the DCO. An edge mute signal is coupled to the deserializer.
Public/Granted literature
- US20170093558A1 Deserialized Dual-Loop Clock Radio and Data Recovery Circuit Public/Granted day:2017-03-30
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