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    • 63. 发明授权
    • Phase locked loop circuit having set initial locking level and control method thereof
    • 具有设定初始锁定电平的锁相环电路及其控制方法
    • US07646223B2
    • 2010-01-12
    • US11640965
    • 2006-12-19
    • Yong-Ju KimKun-Woo ParkHyung-Soo KimIc-Su OhHee-Woong SongJong-Woon KimTae-Jin Hwang
    • Yong-Ju KimKun-Woo ParkHyung-Soo KimIc-Su OhHee-Woong SongJong-Woon KimTae-Jin Hwang
    • H03L7/06
    • H03L7/107H03L7/1075
    • A phase locked loop circuit and a control method thereof. A phase locked loop circuit includes a phase detecting and correcting block configured to detect a phase difference between a reference clock and a feedback clock, and to correct the phase of the feedback clock such that the phase of the reference clock and the phase of the feedback clock are consistent with each other, and an initial locking level setting block configured to set a locking level in a normal operation mode in the phase detecting and correcting block. The initial locking level setting block includes a digital-to-analog converting unit configured to generate an analog voltage according to a digital code corresponding to the set frequency, and charges the capacitive element with the analog voltage, and a switching unit configured to connect the digital-to-analog converting unit and the capacitive element in response to an input of an operation start signal.
    • 一种锁相环电路及其控制方法。 锁相环电路包括相位检测和校正块,被配置为检测参考时钟和反馈时钟之间的相位差,并且校正反馈时钟的相位,使得参考时钟的相位和反馈的相位 时钟彼此一致,并且初始锁定电平设置块被配置为在相位检测和校正块中将正常操作模式中的锁定电平设置为1。 初始锁定电平设置块包括数模转换单元,被配置为根据与设定频率相对应的数字码产生模拟电压,并且用模拟电压对电容元件充电;以及开关单元,被配置为将 数字模拟转换单元和电容元件,以响应于操作开始信号的输入。
    • 64. 发明申请
    • Phase locked loop circuit having set initial locking level and control method thereof
    • 具有设定初始锁定电平的锁相环电路及其控制方法
    • US20070194818A1
    • 2007-08-23
    • US11640965
    • 2006-12-19
    • Yong-Ju KimKun-Woo ParkHyung-Soo KimIc-Su OhHee-Woong SongJong-Woon KimTae-Jin Hwang
    • Yong-Ju KimKun-Woo ParkHyung-Soo KimIc-Su OhHee-Woong SongJong-Woon KimTae-Jin Hwang
    • H03L7/06
    • H03L7/107H03L7/1075
    • A phase locked loop circuit and a control method thereof. A phase locked loop circuit includes a phase detecting and correcting block configured to detect a phase difference between a reference clock and a feedback clock, and to correct the phase of the feedback clock such that the phase of the reference clock and the phase of the feedback clock are consistent with each other, and an initial locking level setting block configured to set a locking level in a normal operation mode in the phase detecting and correcting block. The initial locking level setting block includes a digital-to-analog converting unit configured to generate an analog voltage according to a digital code corresponding to the set frequency, and charges the capacitive element with the analog voltage, and a switching unit configured to connect the digital-to-analog converting unit and the capacitive element in response to an input of an operation start signal.
    • 一种锁相环电路及其控制方法。 锁相环电路包括相位检测和校正块,被配置为检测参考时钟和反馈时钟之间的相位差,并且校正反馈时钟的相位,使得参考时钟的相位和反馈的相位 时钟彼此一致,并且初始锁定电平设置块被配置为在相位检测和校正块中将正常操作模式中的锁定电平设置为1。 初始锁定电平设置块包括数模转换单元,被配置为根据与设定频率相对应的数字码产生模拟电压,并且用模拟电压对电容元件充电;以及开关单元,被配置为将 数字模拟转换单元和电容元件,以响应于操作开始信号的输入。