Invention Grant
- Patent Title: Clock data recovery circuit and a method of operating the same
- Patent Title (中): 时钟数据恢复电路及其操作方法
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Application No.: US14716106Application Date: 2015-05-19
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Publication No.: US09432028B2Publication Date: 2016-08-30
- Inventor: Tae Jin Kim , Chang Hoon Baek , Sang Kyu Lee , Jae Youl Lee
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Suwon-Si, Gyeonggi-Do
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-Si, Gyeonggi-Do
- Agency: F. Chau & Associates, LLC
- Priority: KR10-2014-0069560 20140609
- Main IPC: H03D3/24
- IPC: H03D3/24 ; H03L7/08 ; H03L7/089 ; H03L7/093 ; H03L7/091 ; H03L7/099 ; H03L7/187

Abstract:
A clock data recovery circuit including: a digital phase detector and deserializer configured to sample serial data using a recovery clock signal to generate an up phase error signal and a down phase error signal which correspond to a phase difference between the serial data and the recovery clock signal; a digital loop filter configured to generate an up fine code and a down fine code based on a result of counting the up and down phase error signals; a loop combiner configured to generate an up fine tuning code and a down fine tuning code by using the up and down phase error signals and the up and down fine codes; and a digitally controlled oscillator configured to generate the recovery clock signal having a frequency changed with the up and down fine tuning codes.
Public/Granted literature
- US20150358024A1 CLOCK DATA RECOVERY CIRCUIT AND A METHOD OF OPERATING THE SAME Public/Granted day:2015-12-10
Information query
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