Methods and systems for controlling frequency variation for a PLL reference clock

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United States of America Patent

PATENT NO 12040804
APP PUB NO 20230350451A1
SERIAL NO

17732307

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Abstract

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This application is directed to frequency controlling in an electronic device (e.g., a retimer of a data link). The electronic device includes a selector, a clock generated, and a controller. The selector selects one of a first reference signal and a second reference signal as an input signal having an input phase. The clock generator receives the input signal and generates a periodic signal with reference to the input signal, and the periodic signal has an output phase that matches the input phase of the input signal. While the first reference signal is selected as the input signal, the controller determines whether the second reference signal is in a temporal range in which the second reference signal reaches a peak frequency and controls the selector to select the second reference signal as the input signal in accordance with a determination that the second reference signal is in the temporal range.

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Patent Owner(s)

Patent OwnerAddress
PARADE TECHNOLOGIES LTD2720 ORCHARD PARKWAY SAN JOSE CA 95134

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chang, Liang Shanghai, CN 26 255
Chen, YiTing Taipei, TW 16 27
Cheng, Cindy HsinChu, TW 1 1
Lee, Kochung San Jose, US 13 81
Wang, Hongquan Shanghai, CN 17 42

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