PASSIVE CAPACITIVELY INJECTED PHASE INTERPOLATOR
    2.
    发明申请
    PASSIVE CAPACITIVELY INJECTED PHASE INTERPOLATOR 有权
    被动电容式注入式相位插补器

    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。

    Aperture generating circuit for a multiplying delay-locked loop
    3.
    发明授权
    Aperture generating circuit for a multiplying delay-locked loop 有权
    用于倍增延迟锁定环路的光圈产生电路

    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。

    Passive capacitively injected phase interpolator
    4.
    发明授权
    Passive capacitively injected phase interpolator 有权
    被动电容注入相位内插器

    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。

    Clock-forwarding technique for high-speed links
    5.
    发明授权
    Clock-forwarding technique for high-speed links 有权
    用于高速链路的时钟转发技术

    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

    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)。

    CLOCK-FORWARDING TECHNIQUE FOR HIGH-SPEED LINKS
    6.
    发明申请
    CLOCK-FORWARDING TECHNIQUE FOR HIGH-SPEED LINKS 有权
    用于高速链接的时钟转发技术

    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

    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)。

    APERTURE GENERATING CIRCUIT FOR A MULTIPLYING DELAY-LOCKED LOOP
    7.
    发明申请
    APERTURE GENERATING CIRCUIT FOR A MULTIPLYING DELAY-LOCKED LOOP 有权
    用于多路延迟锁定环路的光电发生电路

    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。

    Offset cancellation in a capacitively coupled amplifier
    9.
    发明授权
    Offset cancellation in a capacitively coupled amplifier 有权
    电容耦合放大器中的偏移消除

    公开(公告)号:US08102203B2

    公开(公告)日:2012-01-24

    申请号:US11860693

    申请日:2007-09-25

    IPC分类号: H03F1/02

    CPC分类号: H03F3/45973 H03F1/30

    摘要: A method for calibrating an offset voltage of an amplifier used to amplify capacitively coupled communication signals is described. During this process, a common voltage is applied to one or more inputs to the amplifier. Next, an output of the amplifier is iteratively, measured, and charge is applied to the one or more inputs until the offset voltage is less than a pre-determined value. Note that applying the charge may involve applying a sequence of one or more charge pulses.

    摘要翻译: 描述了用于校准用于放大电容耦合通信信号的放大器的偏移电压的方法。 在该过程中,将公共电压施加到放大器的一个或多个输入。 接下来,迭代地,测量放大器的输出,并且将电荷施加到一个或多个输入,直到偏移电压小于预定值。 注意,应用电荷可以包括应用一个或多个充电脉冲的序列。

    APPARATUS FOR REDUCING POWER CONSUMPTION BY USING CAPACITIVE COUPLING TO PERFORM MAJORITY DETECTION
    10.
    发明申请
    APPARATUS FOR REDUCING POWER CONSUMPTION BY USING CAPACITIVE COUPLING TO PERFORM MAJORITY DETECTION 有权
    通过使用电容耦合来降低功耗以实现主要检测的设备

    公开(公告)号:US20120007699A1

    公开(公告)日:2012-01-12

    申请号:US13235152

    申请日:2011-09-16

    IPC分类号: H03H7/00

    CPC分类号: G06F1/189

    摘要: One embodiment of the present invention provides a system that reduces power consumption by using capacitive coupling to perform a majority detection operation. The system starts by driving a plurality of signals onto a plurality of driven wires. The signals are then fed from each driven wire through a corresponding coupling capacitor to a single majority detection wire. Next, the system feeds signal on the majority detection wire and a bias voltage to a differential receiver. The output of the differential receiver switches if the signal on the majority-detection wire switches relative to the bias voltage. The system then uses the output of the differential receiver to optimize the signals from the plurality of driven wires for transmission across a long signal route. Optimizing the transmission of signals reduces the power consumed by the computer system.

    摘要翻译: 本发明的一个实施例提供一种通过使用电容耦合来执行多数检测操作来降低功耗的系统。 系统通过将多个信号驱动到多个从动线上开始。 然后,这些信号从每个从动导线通过相应的耦合电容器馈送到单个多数检测线。 接下来,系统将多数检测线上的信号馈送到差分接收器的偏置电压。 如果多数检测线上的信号相对于偏置电压切换,差分接收器的输出将切换。 然后,系统使用差分接收器的输出来优化来自多条驱动线的信号,以便在长信号路径上传输。 优化信号传输减少了计算机系统消耗的功耗。