Clock data recovery circuit, integrated circuit including the same, and clock data recovery method

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United States of America Patent

PATENT NO 9887831
SERIAL NO

15206046

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
SK HYNIX INCGYEONGGI DO SOUTH KOREA GYEONGGI-DO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chi, Han-Kyu Gyeonggi-do, KR 10 15
Kim, Kyu-Young Gyeonggi-do, KR 53 582
Kim, Kyung-Hoon Gyeonggi-do, KR 154 1789
Lee, Sung-Eun Gyeonggi-do, KR 34 211
Park, Myeong-Jae Gyeonggi-do, KR 11 191
Shin, Woo-Yeol Gyeonggi-do, KR 7 41

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