公开(公告)号：US08841948B1

公开(公告)日：2014-09-23

申请号：US13830729

申请日：2013-03-14

Applicant: Xilinx, Inc.

Inventor： Jun-Chau Chien ,  Wayne Fang ,  Parag Upadhyaya ,  Jafar Savoj ,  Kun-Yung Chang

IPC: H03L7/06 ,  H03L7/07

CPC classification number: H03L7/081 ,  H03L7/087 ,  H03L7/0995 ,  H03L7/24

Abstract: An apparatus relates generally to an injection-controlled-locked phase-locked loop (“ICL-PLL”) is disclosed. In this apparatus, a delay-locked loop is coupled to an injection-locked phase-locked loop. An injection-locked oscillator of the injection-locked phase-locked loop is in a feedback loop path of the delay-locked loop.

Abstract translation: 一种装置一般涉及一种注射锁定锁相环（“ICL-PLL”）。 在该装置中，延迟锁定环耦合到注入锁定的锁相环。 注入锁相环的注入锁定振荡器处于延迟锁定环路的反馈回路中。

公开(公告)号：US08710883B1

公开(公告)日：2014-04-29

申请号：US13630192

申请日：2012-09-28

Applicant: Xilinx, Inc.

Inventor： Wayne Fang ,  Parag Upadhyaya

IPC: H03L7/06

CPC classification number: H03L7/0995 ,  H03L7/0891 ,  H03L7/093 ,  H03L2207/06

Abstract: An apparatus comprises a lock-loop circuit including an oscillator, a frequency detector, a charge pump, and a regulator. The regulator is coupled to provide a regulated signal to the oscillator to control frequency. The oscillator and the frequency detector are coupled to receive a reference clock signal. The reference clock signal is coupled to the oscillator to suppress noise in the oscillator by pulse injection. The frequency detector is coupled to receive an oscillator output from the oscillator.

Abstract translation: 一种装置包括一个包括振荡器，频率检测器，电荷泵和调节器的锁环电路。 调节器耦合以向振荡器提供调节信号以控制频率。 振荡器和频率检测器被耦合以接收参考时钟信号。 参考时钟信号耦合到振荡器，以通过脉冲注入来抑制振荡器中的噪声。 频率检测器被耦合以接收来自振荡器的振荡器输出。

公开(公告)号：US08674732B1

公开(公告)日：2014-03-18

申请号：US13830590

申请日：2013-03-14

Applicant: Xilinx, Inc.

Inventor： Wayne Fang

IPC: H03L7/06

CPC classification number: H03L7/089

Abstract: An edge density detector is disclosed. This edge density detector is to receive a reference frequency signal and a feedback frequency signal. This edge density detector includes a first pulse generator, a second pulse generator, and a charge pump. The first pulse generator is coupled to receive the reference frequency signal and is configured to generate a first pulse signal. The second pulse generator is coupled to receive the feedback frequency signal and is configured to generate a second pulse signal. The charge pump is coupled to receive the first pulse signal and the second pulse signal to provide a control voltage signal. The control voltage signal is a phase independent with respect to the reference frequency signal and the feedback frequency signal.

Abstract translation: 公开了一种边缘密度检测器。 该边缘密度检测器是接收参考频率信号和反馈频率信号。 该边缘密度检测器包括第一脉冲发生器，第二脉冲发生器和电荷泵。 第一脉冲发生器被耦合以接收参考频率信号，并被配置为产生第一脉冲信号。 第二脉冲发生器被耦合以接收反馈频率信号，并被配置为产生第二脉冲信号。 电荷泵耦合以接收第一脉冲信号和第二脉冲信号以提供控制电压信号。 控制电压信号相对于参考频率信号和反馈频率信号是相位独立的。