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    • 2. 发明申请
    • DEVICE FOR GENERATING CLOCK IN SEMICONDUCTOR INTEGRATED CIRCUIT
    • 用于在半导体集成电路中产生时钟的器件
    • US20110025384A1
    • 2011-02-03
    • US12646608
    • 2009-12-23
    • Won Joo YUNHyun Woo LeeKi Han Kim
    • Won Joo YUNHyun Woo LeeKi Han Kim
    • H03L7/06G06F1/04
    • G06F1/06H03L7/0812H03L7/0995H03L7/16
    • Various embodiments of a semiconductor integrated circuit. According to one exemplary embodiment, a semiconductor integrated circuit includes a multi-phase clock generator that is configured to generate a multi-phase internal clock; a first edge combining unit that is configured to generate a first output clock having a first frequency by combining rising edges of clocks included in the internal clock, and transmit the first output clock to a first port; and a second edge combining unit that is configured to generate a second output clock having a second frequency by combining rising edges of clocks included in the internal clock, and transmit the output clock to a second port.
    • 半导体集成电路的各种实施例。 根据一个示例性实施例,半导体集成电路包括被配置为产生多相内部时钟的多相时钟发生器; 第一边缘组合单元,被配置为通过组合包括在所述内部时钟中的时钟的上升沿来产生具有第一频率的第一输出时钟,并将所述第一输出时钟发送到第一端口; 以及第二边缘组合单元,其被配置为通过组合包括在所述内部时钟中的时钟的上升沿来产生具有第二频率的第二输出时钟,并将所述输出时钟发送到第二端口。
    • 4. 发明申请
    • SEMICONDUCTOR INTEGRATED CIRCUIT HAVING DELAY LOCKED LOOP CIRCUIT
    • 具有延迟锁定环路的半导体集成电路
    • US20110102035A1
    • 2011-05-05
    • US12648380
    • 2009-12-29
    • Hyun Woo LEEWon Joo YUN
    • Hyun Woo LEEWon Joo YUN
    • H03L7/06
    • H03L7/0814H03L7/0805H03L7/095
    • A semiconductor integrated circuit is provided. The semiconductor integrated circuit includes: a delay locked loop (DLL) output block configured to delay an input clock signal by a predetermined time in response to a plurality of delay control signals and provide a DLL clock signal; a locking control block configured to compare a phase of a reference clock signal and a phase of a feedback clock signal, and synchronize the phase of the reference clock signal and the phase of the feedback clock signal in response to the plurality of delay control signals; and a locking detection block configured to detect whether the phase of the reference clock signal and the phase of the feedback clock signal are synchronized and the DLL clock signal is locked, wherein, when the DLL clock signal is locked, the locking control block provides the reference clock signal, which is obtained by dividing the input clock signal by n (where n is a natural number equal to or greater than 2), as an internal DLL clock signal.
    • 提供半导体集成电路。 半导体集成电路包括:响应于多个延迟控制信号而将输入时钟信号延迟预定时间的延迟锁定环(DLL)输出块,并提供DLL时钟信号; 锁定控制块,被配置为比较参考时钟信号的相位和反馈时钟信号的相位,并且响应于所述多个延迟控制信号使参考时钟信号的相位和反馈时钟信号的相位同步; 以及锁定检测块,被配置为检测参考时钟信号的相位和反馈时钟信号的相位是否同步,并且DLL时钟信号被锁定,其中,当DLL时钟信号被锁定时,锁定控制块提供 通过将输入时钟信号除以n(其中n是等于或大于2的自然数)获得的参考时钟信号作为内部DLL时钟信号。
    • 6. 发明申请
    • DLL CIRCUIT HAVING ACTIVATION POINTS
    • 具有激活点的DLL电路
    • US20120007646A1
    • 2012-01-12
    • US13237083
    • 2011-09-20
    • Won Joo YUNHyun Woo LEE
    • Won Joo YUNHyun Woo LEE
    • H03L7/06
    • H03L7/0814H03L7/0818
    • A delay locked loop (DLL) circuit includes a delay line configured to generate a delay clock signal by delaying a reference clock signal in response to a delay control signal, the delay line having two or more initial activation points, wherein the initial activation points are selected according to an initial value of the delay control signal; a delay compensating unit configured to generate a feedback clock signal by delaying the delay clock signal for a predetermined time; a phase detecting unit configured to generate a phase detection signal by comparing a phase of the reference clock signal to a phase of the feedback clock signal; and a delay control unit configured to generate the delay control signal in response to the phase detection signal.
    • 延迟锁定环路(DLL)电路包括延迟线,其被配置为通过响应于延迟控制信号延迟参考时钟信号来产生延迟时钟信号,该延迟线具有两个或多个初始激活点,其中初始激活点是 根据延迟控制信号的初始值选择; 延迟补偿单元,被配置为通过将所述延迟时钟信号延迟预定时间来产生反馈时钟信号; 相位检测单元,被配置为通过将参考时钟信号的相位与反馈时钟信号的相位进行比较来产生相位检测信号; 以及延迟控制单元,被配置为响应于相位检测信号而产生延迟控制信号。
    • 7. 发明申请
    • DELAY-LOCKED LOOP APPARATUS ADJUSTING INTERNAL CLOCK SIGNAL IN SYNCHRONIZATION WITH EXTERNAL CLOCK SIGNAL
    • 延时锁定装置调节内部时钟信号与外部时钟信号同步
    • US20080001642A1
    • 2008-01-03
    • US11683528
    • 2007-03-08
    • Won Joo YUNHyun Woo LEE
    • Won Joo YUNHyun Woo LEE
    • H03L7/00
    • H03L7/0812H03L7/0818H03L7/087
    • A delay-locked loop apparatus includes at least a rising-clock delay-locked circuit, a falling-clock delay-locked circuit, and a duty cycle compensation circuit. The rising-clock delay-locked circuit detects the phase difference between a first clock inputted as a reference clock and a second clock obtained by replica-delaying the first clock, and then delay-locks the first clock and outputs a rising clock. The falling-clock delay-locked circuit detects the phase difference between an inverted clock of the first clock and the rising clock after a delay locking operation with respect to the rising clock, delay-locks an inverted clock of the first clock and outputs a falling clock. The duty cycle compensation circuit compensates duty cycles of the delay-locked rising clock and falling clock, and the falling-clock delay-locked circuit includes a divider for separately dividing the inverted clock and the delay-locked rising clock.
    • 延迟锁定环路装置至少包括上升时钟延迟锁定电路,下降时钟延迟锁定电路和占空比补偿电路。 上升时钟延迟锁定电路检测作为参考时钟输入的第一时钟与通过复制延迟第一时钟而获得的第二时钟之间的相位差,然后延迟锁定第一时钟并输出上升时钟。 下降时钟延迟锁定电路检测在相对于上升时钟的延迟锁定操作之后第一时钟的反相时钟和上升时钟之间的相位差,延迟锁定第一时钟的反相时钟并输出下降 时钟。 占空比补偿电路补偿延迟锁定上升时钟和下降时钟的占空比,下降时钟延迟锁定电路包括一个分频器,用于分开反相时钟和延迟锁定上升时钟。
    • 9. 发明申请
    • DLL CIRCUIT HAVING DUTY CYCLE CORRECTION AND METHOD OF CONTROLLING THE SAME
    • 具有占空比校正的DLL电路及其控制方法
    • US20100109725A1
    • 2010-05-06
    • US12345136
    • 2008-12-29
    • Won Joo YUNHyun Woo LEE
    • Won Joo YUNHyun Woo LEE
    • H03L7/06
    • H03L7/0814H03K5/1565
    • A delay locked loop (DLL) circuit includes a duty cycle correcting unit configured to correct a duty cycle of a reference clock signal in response to a duty cycle correction signal and generate a correction clock signal. A feedback loop of the DLL circuit performs a delay lock operation on the correction clock signal and generates an output clock signal. A first duty cycle detecting unit detects a duty cycle of the correction clock signal and generates a first detection signal and a second duty cycle detecting unit detects a duty cycle of the output clock signal and generates a second detection signal. Finally, a duty cycle control unit generates the duty cycle correction signal in response to the first detection signal and the second detection signal to perform the duty cycle correction.
    • 延迟锁定环(DLL)电路包括占空比校正单元,其被配置为响应于占空比校正信号来校正参考时钟信号的占空比并产生校正时钟信号。 DLL电路的反馈回路对校正时钟信号执行延迟锁定操作,并产生输出时钟信号。 第一占空比检测单元检测校正时钟信号的占空比并产生第一检测信号,第二占空比检测单元检测输出时钟信号的占空比并产生第二检测信号。 最后,占空比控制单元响应于第一检测信号和第二检测信号产生占空比校正信号,以执行占空比校正。