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公开(公告)号：US20110068827A1
公开(公告)日：2011-03-24
申请号：US12566506
申请日：2009-09-24
IPC分类号： H03D13/00
CPC分类号： H03D13/00
摘要： A phase-interpolator circuit is described. In the phase-interpolator circuit, an output signal, having a fundamental frequency and a phase, is generated based on a weighted summation of a first reference signal and a second reference signal, where the first reference signal has the fundamental frequency and a first phase, and the second reference signal has the same fundamental frequency and a second phase. Note that contributions of the first reference signal and the second reference signal, respectively, to the output signal are determined based on associated first and second impedance values in a weighting circuit in the phase-interpolator circuit. For example, a programmable capacitance ratio of two capacitors may be used to interpolate between the first reference signal and the second reference signal. Additionally, the phase-interpolator circuit may include a biasing circuit that provides a DC bias to the weighting circuit, and which amplifies the output of the weighting circuit to provide the output signal.
摘要翻译： 描述了相位插值器电路。 在相位插值器电路中，基于第一参考信号和第二参考信号的加权求和产生具有基频和相位的输出信号，其中第一参考信号具有基频和第一相位 ，第二参考信号具有相同的基频和第二相位。 注意，基于相位插值器电路中的加权电路中的相关联的第一和第二阻抗值来确定第一参考信号和第二参考信号对输出信号的贡献。 例如，可以使用两个电容器的可编程电容比来在第一参考信号和第二参考信号之间进行内插。 另外，相位插值器电路可以包括向加权电路提供DC偏置并且放大加权电路的输出以提供输出信号的偏置电路。
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公开(公告)号：US07994832B2
公开(公告)日：2011-08-09
申请号：US12613936
申请日：2009-11-06
IPC分类号： H03L7/00
CPC分类号： H03L7/16 , H03L7/0816
摘要： A multiplying delay-locked loop (MDLL) is described. In the MDLL, a phase interpolator (PI) provides a correction signal to selection control logic by phase mixing two internal signals (which have different phases) from a sequence of delay elements in the MDLL. This correction signal compensates for a delay associated with the selection control logic, thereby ensuring that a selection pulse or signal output by the selection control logic to a selection circuit (such as a multiplexer) is appropriately timed so that the selection circuit can selectively injection lock the sequence of delay elements using edges in a reference signal.
摘要翻译： 描述了乘法延迟锁定环路（MDLL）。 在MDLL中，相位插值器（PI）通过将两个内部信号（其具有不同相位）与来自MDLL中的延迟元件的序列相混合来向选择控制逻辑提供校正信号。 该校正信号补偿与选择控制逻辑相关联的延迟，从而确保由选择控制逻辑输出到选择电路（例如多路复用器）的选择脉冲或信号被适当地定时，使得选择电路可以选择性地注入锁定 在参考信号中使用边缘的延迟元件的序列。
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公开(公告)号：US08035436B2
公开(公告)日：2011-10-11
申请号：US12566506
申请日：2009-09-24
IPC分类号： H03H11/16
CPC分类号： H03D13/00
摘要： A phase-interpolator circuit is described. In the phase-interpolator circuit, an output signal, having a fundamental frequency and a phase, is generated based on a weighted summation of a first reference signal and a second reference signal, where the first reference signal has the fundamental frequency and a first phase, and the second reference signal has the same fundamental frequency and a second phase. Note that contributions of the first reference signal and the second reference signal, respectively, to the output signal are determined based on associated first and second impedance values in a weighting circuit in the phase-interpolator circuit. For example, a programmable capacitance ratio of two capacitors may be used to interpolate between the first reference signal and the second reference signal. Additionally, the phase-interpolator circuit may include a biasing circuit that provides a DC bias to the weighting circuit, and which amplifies the output of the weighting circuit to provide the output signal.
摘要翻译： 描述了相位插值器电路。 在相位插值器电路中，基于第一参考信号和第二参考信号的加权求和产生具有基频和相位的输出信号，其中第一参考信号具有基频和第一相位 ，第二参考信号具有相同的基频和第二相位。 注意，基于相位插值器电路中的加权电路中的相关联的第一和第二阻抗值来确定第一参考信号和第二参考信号对输出信号的贡献。 例如，可以使用两个电容器的可编程电容比来在第一参考信号和第二参考信号之间进行内插。 另外，相位插值器电路可以包括向加权电路提供DC偏置并且放大加权电路的输出以提供输出信号的偏置电路。
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公开(公告)号：US08116420B2
公开(公告)日：2012-02-14
申请号：US12642348
申请日：2009-12-18
IPC分类号： H03D3/24
CPC分类号： H04L25/247 , H03L7/0805 , H04L7/0012
摘要： A repeater circuit, such as a clock regeneration and multiplication circuit, is described. In this repeater circuit, a clock multiplier unit (CMU) generates an internal clock signal based on a forwarded clock signal, which is received on a link. Furthermore, a phase interpolator (PI) in the repeater circuit provides the output clock signal based on the forwarded clock signal and the internal clock signal. Note that the CMU and the PI filter reduce the cycle-to-cycle jitter in the forwarded clock signal and the internal clock signal, and that the output clock signal has a phase that is a weighted average of the phases of the forwarded clock signal and the internal clock signal. In addition, the relative weights of the forwarded clock signal and the internal clock signal (i.e., the amount of phase averaging and jitter filtering) may be adjusted based on a position or location on the link.
摘要翻译： 描述了诸如时钟再生和乘法电路的中继器电路。 在该中继器电路中，时钟倍增器单元（CMU）基于在链路上接收到的转发时钟信号产生内部时钟信号。 此外，中继器电路中的相位插值器（PI）基于转发的时钟信号和内部时钟信号来提供输出时钟信号。 注意，CMU和PI滤波器减少转发的时钟信号和内部时钟信号中的周期到周期抖动，并且输出时钟信号具有作为转发的时钟信号的相位的加权平均的相位，以及 内部时钟信号。 此外，可以基于链路上的位置或位置来调整所转发的时钟信号和内部时钟信号的相对权重（即，相位平均和抖动滤波的量）。
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公开(公告)号：US20110150159A1
公开(公告)日：2011-06-23
申请号：US12642348
申请日：2009-12-18
IPC分类号： H04L7/00
CPC分类号： H04L25/247 , H03L7/0805 , H04L7/0012
摘要： A repeater circuit, such as a clock regeneration and multiplication circuit, is described. In this repeater circuit, a clock multiplier unit (CMU) generates an internal clock signal based on a forwarded clock signal, which is received on a link. Furthermore, a phase interpolator (PI) in the repeater circuit provides the output clock signal based on the forwarded clock signal and the internal clock signal. Note that the CMU and the PI filter reduce the cycle-to-cycle jitter in the forwarded clock signal and the internal clock signal, and that the output clock signal has a phase that is a weighted average of the phases of the forwarded clock signal and the internal clock signal. In addition, the relative weights of the forwarded clock signal and the internal clock signal (i.e., the amount of phase averaging and jitter filtering) may be adjusted based on a position or location on the link.
摘要翻译： 描述了诸如时钟再生和乘法电路的中继器电路。 在该中继器电路中，时钟倍增器单元（CMU）基于在链路上接收到的转发时钟信号产生内部时钟信号。 此外，中继器电路中的相位插值器（PI）基于转发的时钟信号和内部时钟信号来提供输出时钟信号。 注意，CMU和PI滤波器减少转发的时钟信号和内部时钟信号中的周期到周期抖动，并且输出时钟信号具有作为转发的时钟信号的相位的加权平均的相位，以及 内部时钟信号。 此外，可以基于链路上的位置或位置来调整所转发的时钟信号和内部时钟信号的相对权重（即，相位平均和抖动滤波的量）。
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公开(公告)号：US20110109356A1
公开(公告)日：2011-05-12
申请号：US12613936
申请日：2009-11-06
IPC分类号： H03L7/06
CPC分类号： H03L7/16 , H03L7/0816
摘要： A multiplying delay-locked loop (MDLL) is described. In the MDLL, a phase interpolator (PI) provides a correction signal to selection control logic by phase mixing two internal signals (which have different phases) from a sequence of delay elements in the MDLL. This correction signal compensates for a delay associated with the selection control logic, thereby ensuring that a selection pulse or signal output by the selection control logic to a selection circuit (such as a multiplexer) is appropriately timed so that the selection circuit can selectively injection lock the sequence of delay elements using edges in a reference signal.
摘要翻译： 描述了乘法延迟锁定环路（MDLL）。 在MDLL中，相位插值器（PI）通过将两个内部信号（其具有不同相位）与来自MDLL中的延迟元件的序列相混合来向选择控制逻辑提供校正信号。 该校正信号补偿与选择控制逻辑相关联的延迟，从而确保由选择控制逻辑输出到选择电路（例如多路复用器）的选择脉冲或信号被适当地定时，使得选择电路可以选择性地注入锁定 在参考信号中使用边缘的延迟元件的序列。
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