Invention Grant
- Patent Title: Clock data recovery circuit, integrated circuit including the same, and clock data recovery method
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Application No.: US15206046Application Date: 2016-07-08
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Publication No.: US09887831B2Publication Date: 2018-02-06
- Inventor: Woo-Yeol Shin , Myeong-Jae Park , Kyu-Young Kim , Han-Kyu Chi , Sung-Eun Lee , Kyung-Hoon Kim
- Applicant: SK hynix Inc.
- Applicant Address: KR Gyeonggi-do
- Assignee: SK Hynix Inc.
- Current Assignee: SK Hynix Inc.
- Current Assignee Address: KR Gyeonggi-do
- Agency: IP & T Group LLP
- Priority: KR10-2016-0017027 20160215
- Main IPC: H03D3/24
- IPC: H03D3/24 ; H04L7/033 ; H03L7/081 ; H04L7/00

Abstract:
A clock data recovery circuit may include: a phase comparison unit suitable for comparing input data with a phase of a multi-phase clock, and for generating an up/down signal corresponding to the comparison result; a filtering unit suitable for counting the up/down signal based on an upper threshold value and a lower threshold value, for setting, when an overflow occurs, the lower threshold value to an initial value for the count of the up/down signal, or when a underflow occurs, the upper threshold value to the initial value for the count of the up/down signal, and for generating a control code corresponding to one of the underflow and the overflow; and a phase rotating unit suitable for adjusting the phase of the multi-phase clock in response to the control code outputted from the filtering unit.
Public/Granted literature
- US20170237550A1 CLOCK DATA RECOVERY CIRCUIT, INTEGRATED CIRCUIT INCLUDING THE SAME, AND CLOCK DATA RECOVERY METHOD Public/Granted day:2017-08-17
Information query
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