Clock and data recovery circuit
    91.
    发明申请
    Clock and data recovery circuit 审中-公开
    时钟和数据恢复电路

    公开(公告)号:US20060067452A1

    公开(公告)日:2006-03-30

    申请号:US10948697

    申请日:2004-09-24

    IPC分类号: H03D3/24

    摘要: A clock and data recovery circuit is provided that includes a phase/frequency detector to receive input data and multiphase clock signals. The phase/frequency detector including a first set of flip-flop circuits each to sample the input data at one of the multiphase clock signals and each to output a sampled data, and a second set of flip-flop circuits to retime the sampled data based on a similar clock signal applied to each of the second set of flip-flop circuits.

    摘要翻译: 提供了一种时钟和数据恢复电路,其包括用于接收输入数据和多相时钟信号的相位/频率检测器。 相位/频率检测器包括第一组触发器电路,每个触发器电路各自以多相时钟信号中的一个采样输入数据,并且每个触发器电路各自输出采样数据;以及第二组触发器电路,用于基于采样数据进行加权 在施加到每个第二组触发器电路的类似时钟信号上。

    Single to dual non-overlapping converter
    92.
    发明申请
    Single to dual non-overlapping converter 有权
    单对双重非重叠转换器

    公开(公告)号:US20060066462A1

    公开(公告)日:2006-03-30

    申请号:US10954127

    申请日:2004-09-29

    IPC分类号: H03M3/00

    摘要: A converter includes an input circuit to receive a single-ended input signal to generate a number of control signals. The control signals have a delay different from one another relative to the single-ended input signal. The converter also includes a first output circuit and a second output circuit. The first output circuit responds to the control signals to generate a first output signal. The second output circuit responds to the control signals to generate a second output signal. The first and second output signals are non-overlapping and form a complimentary signal pair.

    摘要翻译: A转换器包括用于接收单端输入信号以产生多个控制信号的输入电路。 控制信号相对于单端输入信号具有彼此不同的延迟。 转换器还包括第一输出电路和第二输出电路。 第一输出电路响应控制信号以产生第一输出信号。 第二输出电路响应控制信号以产生第二输出信号。 第一和第二输出信号是不重叠的,并形成一个互补信号对。

    Soft-error rate hardened pulsed latch
    95.
    发明申请
    Soft-error rate hardened pulsed latch 失效
    软错误率硬化脉冲锁存器

    公开(公告)号:US20050134347A1

    公开(公告)日:2005-06-23

    申请号:US10741560

    申请日:2003-12-19

    IPC分类号: H03K3/037

    CPC分类号: H03K3/0375

    摘要: A latch includes a memory unit, a transfer unit, an inversion unit, and an output unit. The Memory unit includes a number of storage nodes. The transfer unit transfers a data from a data input node to the storage nodes via a plurality of data paths. Each of the data paths includes a pass element controlled by a pulse. The inversion unit inverts the data before the data is transferred from the data input node to at least one of the storage nodes. The output unit outputs the data from the memory unit to a latch output node. The memory unit, the transfer unit, the inversion unit, and the output unit of the latch form a soft-error rate hardened latch structure with a reduced number of elements and reduced power consumption.

    摘要翻译: 锁存器包括存储单元,转移单元,反转单元和输出单元。 存储器单元包括多个存储节点。 传送单元经由多个数据路径将数据从数据输入节点传送到存储节点。 每个数据路径包括由脉冲控制的通过元件。 在将数据从数据输入节点传送到至少一个存储节点之前,反转单元将数据反转。 输出单元将数据从存储器单元输出到锁存输出节点。 存储器单元,转移单元,反转单元和锁存器的输出单元形成具有减少元件数量并降低功耗的软错误率硬化锁存结构。

    High-speed data sampler for optical interconnect
    96.
    发明申请
    High-speed data sampler for optical interconnect 有权
    用于光互连的高速数据采样器

    公开(公告)号:US20050069070A1

    公开(公告)日:2005-03-31

    申请号:US10673218

    申请日:2003-09-30

    IPC分类号: H03L7/081 H04L7/00

    摘要: A system and method for sampling a data stream generates a number of clock signals having equally spaced phases and then samples a data stream using the clock signals. The clock phases are preferably based on a predetermined fraction of a data rate frequency of the data stream, and sampling is performed based on predetermined combinations of the clock signals. While the system and method is suitable for sampling data transmitted for a wide variety of data rates, the system and method is especially well-suited to sampling at data transmitted at high rates, for example, equal to or greater than 20 Gb/s.

    摘要翻译: 用于对数据流进行采样的系统和方法产生具有相等间隔相位的多个时钟信号,然后使用时钟信号对数据流进行采样。 时钟相位优选地基于数据流的数据速率频率的预定分数,并且基于时钟信号的预定组合来执行采样。 虽然系统和方法适合于为各种数据速率传输的数据采样,但是该系统和方法特别适合于以高速率传输的数据进行采样,例如等于或大于20Gb / s。

    Differential, double feedback CMOS transimpedance amplifier with noise tolerance
    97.
    发明授权
    Differential, double feedback CMOS transimpedance amplifier with noise tolerance 失效
    差分双反馈CMOS跨阻抗放大器,具有噪声容限

    公开(公告)号:US06737924B1

    公开(公告)日:2004-05-18

    申请号:US10317709

    申请日:2002-12-11

    IPC分类号: H03F308

    摘要: A transimpedance amplifier having a first input port to connect to a signal source having an output impedance, and a second input port loaded by an impedance matched to the output impedance of the signal source, the amplifier comprising three stage pairs. The first stage pair comprises two inverting amplifiers, each employing negative feedback. The second stage pair comprises two inverting amplifiers with cross-coupled negative feedback. The third stage pair is similar in structure to the first stage pair. The inverter amplifiers in the third stage pair provide the differential voltage.

    摘要翻译: 一种跨阻放大器,具有连接到具有输出阻抗的信号源的第一输入端口和由与信号源的输出阻抗匹配的阻抗加载的第二输入端口,该放大器包括三个级对。 第一级对包括两个反相放大器,每个反相放大器采用负反馈。 第二级对包括具有交叉耦合负反馈的两个反相放大器。 第三级对在结构上与第一级对相似。 第三级对中的反相放大器提供差分电压。

    High bandwidth, low power, single stage cascode transimpedance amplifier for short haul optical links
    98.
    发明授权
    High bandwidth, low power, single stage cascode transimpedance amplifier for short haul optical links 有权
    用于短距离光链路的高带宽,低功耗,单级共源共栅跨阻放大器

    公开(公告)号:US06639472B2

    公开(公告)日:2003-10-28

    申请号:US10107679

    申请日:2002-03-26

    IPC分类号: H03F308

    CPC分类号: H03F3/082

    摘要: A high bandwidth, single stage, low power cascode transimpedance amplifier for short haul optical links. In one embodiment, an input signal is fed into the source of a common-gate pMOSFET, the output signal is taken at the drain of the common-gate pMOSFET, and bias current is supplied by a pMOSFET and a nMOSFET biased in their triode regions.

    摘要翻译: 用于短距离光链路的高带宽,单级,低功率共源共栅跨阻放大器。 在一个实施例中,输入信号被馈送到共栅极pMOSFET的源极中,输出信号在公共栅极pMOSFET的漏极处获取,并且偏置电流由偏置在其三极管区域中的pMOSFET和nMOSFET提供 。

    Storage element with switched capacitor
    99.
    发明授权
    Storage element with switched capacitor 失效
    带开关电容器的存储元件

    公开(公告)号:US06504412B1

    公开(公告)日:2003-01-07

    申请号:US09663750

    申请日:2000-09-15

    IPC分类号: G06F764

    CPC分类号: H03K3/013 H03K3/356191

    摘要: A latch includes a pair of inverters cross-coupled between a storage node and a feedback node. A capacitor is conditionally coupled to the feedback node through a pass gate such that the capacitor is coupled to the feedback node when the latch holds data and is not coupled to the feedback node when the latch is loading. The capacitor reduces the latch's susceptibility to soft errors when holding data, and does not appreciably slow the latch when data is loading. The capacitor is implemented using the gate capacitance of complementary transistors. A flip-flop includes cascaded latches, one or more of which have a switched capacitor on a feedback node.

    摘要翻译: 锁存器包括交叉耦合在存储节点和反馈节点之间的一对反相器。 电容器有条件地通过传递门耦合到反馈节点,使得当锁存器保持数据时,电容器耦合到反馈节点,并且当锁存器被加载时,电容器不耦合到反馈节点。 当保存数据时,电容会降低锁存器对软错误的敏感性,并且在数据加载时不会明显减慢锁存器的速度。 使用互补晶体管的栅极电容来实现电容器。 触发器包括级联锁存器,其中一个或多个锁存器在反馈节点上具有开关电容器。