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    • 6. 发明公开
    • 집적회로
    • 集成电路
    • KR1020140062664A
    • 2014-05-26
    • KR1020120128985
    • 2012-11-14
    • 에스케이하이닉스 주식회사서울대학교산학협력단
    • 김관동김수환홍기문
    • G11C7/22G11C5/14
    • H03K3/0322H03L7/087H03L7/0995
    • An integrated circuit according to the present invention comprises a ring oscillator, a first phase control unit, and a second phase control unit. The ring oscillator comprises one or more delay cells having delay values and generates two or more periodic waves. The first phase control unit changes the delay values of one or more delay cells from a first delay value to a second delay value according to a first comparison signal which corresponds to a phase difference by comparing the phase of a first selection periodic wave with the phase of a reference wave. The second phase control unit returns the delay values of one or more delay cells from the second delay value to the first delay value according to a second comparison signal which corresponds to the phase difference by comparing the phase of a second selection periodic wave with the phase of the reference wave. The time of returning the delay values of one or more delay cells to the first delay value corresponds to an interval from the time of starting the activation section of the first comparison signal to the time of ending the activation section of the second comparison signal.
    • 根据本发明的集成电路包括环形振荡器,第一相位控制单元和第二相位控制单元。 环形振荡器包括具有延迟值的一个或多个延迟单元并且产生两个或更多个周期波。 第一相位控制单元通过将第一选择周期波的相位与相位相比较,将根据对应于相位差的第一比较信号将一个或多个延迟单元的延迟值从第一延迟值改变为第二延迟值 的参考波。 第二相位控制单元通过将第二选择周期波的相位与相位相比较,根据对应于相位差的第二比较信号,将一个或多个延迟单元的延迟值从第二延迟值返回到第一延迟值 的参考波。 将一个或多个延迟单元的延迟值返回到第一延迟值的时间对应于从第一比较信号的启动部分开始到结束第二比较信号的激活部分的时间的间隔。