Methods and apparatus for asynchronous serial channel connections in communication systems
    61.
    发明授权
    Methods and apparatus for asynchronous serial channel connections in communication systems 有权
    通信系统中异步串行通道连接的方法和装置

    公开(公告)号:US07688924B2

    公开(公告)日:2010-03-30

    申请号:US11089216

    申请日:2005-03-24

    摘要: An integrated circuit device for use in a node of a communication system is provided. The integrated circuit device includes a memory configured to store data written thereto by a receiver associated with the node in accordance with a receiver clock, and to read data therefrom by a transmitter associated with the node in accordance with a transmitter clock. The integrated circuit device also includes a control logic circuit that is in communication with the memory, and is configured to send a control signal to the transmitter to adjust a speed of the transmitter clock responsive to an operating condition of the memory.

    摘要翻译: 提供一种在通信系统的节点中使用的集成电路装置。 集成电路装置包括被配置为存储由根据接收机时钟与节点相关联的接收机写入的数据的存储器,并且根据发射机时钟由与节点相关联的发射机从其读取数据。 集成电路装置还包括与存储器通信的控制逻辑电路,并且被配置为响应于存储器的操作条件向发射器发送控制信号以调整发射机时钟的速度。

    PEER-TO-PEER NETWORK COMMUNICATIONS USING SATA/SAS TECHNOLOGY
    62.
    发明申请
    PEER-TO-PEER NETWORK COMMUNICATIONS USING SATA/SAS TECHNOLOGY 失效
    使用SATA / SAS技术的对等网络通信

    公开(公告)号:US20100049896A1

    公开(公告)日:2010-02-25

    申请号:US12610462

    申请日:2009-11-02

    IPC分类号: G06F13/28 G06F13/36

    摘要: A conventional serial communications protocol that is limited to supporting only host-to-slave communications, such as SATA or SAS, is extended to support peer-to-peer communications, e.g., by adding a memory-map layer into the conventional protocol stack between the link layer and the protocol layer. The addition of the memory-map layer enables two (or more) non-host devices (i.e., peer devices) to communicate with one another without using a host computer and without relying on conventional protocol-bridging techniques.

    摘要翻译: 仅限于支持诸如SATA或SAS的主机到从机通信的常规串行通信协议被扩展以支持对等通信,例如通过将存储器映射层添加到常规协议栈之间 链路层和协议层。 存储器映射图层的添加使得两个(或多个)非主机设备(即,对等设备)彼此通信,而不使用主计算机,而不依赖于传统的协议桥接技术。

    Method and apparatus for generating one or more clock signals for a decision-feedback equalizer using DFE detected data
    63.
    发明授权
    Method and apparatus for generating one or more clock signals for a decision-feedback equalizer using DFE detected data 有权
    用于使用DFE检测数据为判决反馈均衡器生成一个或多个时钟信号的方法和装置

    公开(公告)号:US07616686B2

    公开(公告)日:2009-11-10

    申请号:US11356691

    申请日:2006-02-17

    IPC分类号: H03H7/30

    摘要: Methods and apparatus are provided for generating one or more clock signals for a decision-feedback equalizer using DFE detected data. A received signal is sampled using a data clock and a transition clock to generate a data sample signal and a transition sample signal, respectively. A DFE correction is obtained for each of the data sample and transition sample signals to generate DFE detected data and a DFE transition data. The DFE detected data and DFE transition data are then applied to a phase detector that generates a signal to adjust a phase of one or more of the data clock and transition clock. In a multi-level implementation, the received signal is sampled using a clock associated with each of the levels and the samples are latched using a vertical slicing technique to generate DFE data associated with each of said levels.

    摘要翻译: 提供了用于使用DFE检测数据为判决反馈均衡器生成一个或多个时钟信号的方法和装置。 使用数据时钟和转换时钟对接收到的信号进行采样,以分别产生数据采样信号和转换采样信号。 为每个数据采样和转换采样信号获得DFE校正,以产生DFE检测数据和DFE转换数据。 DFE检测数据和DFE转换数据然后被施加到产生信号以调整数据时钟和转换时钟中的一个或多个的相位的相位检测器。 在多级实现中,使用与每个级别相关联的时钟对接收到的信号进行采样,并且使用垂直限幅技术来锁存样本以生成与每个所述级别相关联的DFE数据。

    Method and apparatus for monitoring and compensating for skew on a high speed parallel bus
    64.
    发明授权
    Method and apparatus for monitoring and compensating for skew on a high speed parallel bus 有权
    用于监视和补偿高速并行总线上的偏斜的方法和装置

    公开(公告)号:US07587640B2

    公开(公告)日:2009-09-08

    申请号:US11235872

    申请日:2005-09-27

    IPC分类号: G11B20/20

    CPC分类号: G06F13/4213

    摘要: Methods and apparatus are provided for monitoring and compensating for skew on a high speed parallel bus. Delay skew for a plurality of signals on a parallel bus is monitored by obtaining a plurality of samples of the plurality of signals for each unit interval; and identifying a location of transitions in the plurality of signals based on the samples. The samples can be obtained, for example, by sampling the plurality of signals using a plurality of latches and estimating a value of one or more of the plurality of signals by comparing values of the latches. A microprocessor can optionally be employed to determine a relative distribution of transitions in the plurality of signals and to align transitions in the plurality of signals to a common position. The transitions in the plurality of signals can be aligned to a common position by adjusting a delay control setting for a buffer associated with each of the plurality of signals.

    摘要翻译: 提供了用于监视和补偿高速并行总线上的偏斜的方法和装置。 通过获得每个单位间隔的多个信号的多个样本来监视并行总线上的多个信号的延迟偏移; 以及基于所述样本来识别所述多​​个信号中的转变的位置。 可以例如通过使用多个锁存器对多个信号进行采样并且通过比较锁存器的值来估计多个信号中的一个或多个的值来获得样本。 可以可选地使用微处理器来确定多个信号中的转变的相对分布并且将多个信号中的转变对准到公共位置。 通过调整与多个信号中的每个信号相关联的缓冲器的延迟控制设置,多个信号中的转换可以对齐到公共位置。

    Methods and Apparatus for Detecting a Loss of Lock Condition in a Clock and Data Recovery System
    65.
    发明申请
    Methods and Apparatus for Detecting a Loss of Lock Condition in a Clock and Data Recovery System 有权
    用于检测时钟和数据恢复系统中锁定状态丢失的方法和装置

    公开(公告)号:US20090168936A1

    公开(公告)日:2009-07-02

    申请号:US11967632

    申请日:2007-12-31

    IPC分类号: H04L7/00

    CPC分类号: H04L7/0062 H04L7/0083

    摘要: Methods and apparatus are provided for detecting a loss of lock condition in a clock and data recovery system. A loss of lock condition is detected in a clock and data recovery system that generates a recovered clock signal from a received signal by sampling the received signal for a plurality of different phases using one or more latches clocked by the recovered clock; evaluating the samples to monitor a data eye associated with the received signal; and detecting the loss of lock condition if the data eye does not satisfy one or more predefined conditions. Generally, the predefined conditions identify a loss of the data eye (e.g, when the data eye cannot be substantially detected), for example, based on a degree of opening of the data eye. The clock and data recovery system can optionally be restarted if the loss of lock condition is detected.

    摘要翻译: 提供了用于检测时钟和数据恢复系统中的锁定状况的损失的方法和装置。 在时钟和数据恢复系统中检测到锁定状态的损失,该系统通过使用由恢复时钟计时的一个或多个锁存器对接收到的信号进行多个不同相位的采样来产生来自接收信号的恢复时钟信号; 评估样本以监测与接收信号相关联的数据眼; 并且如果数据眼不满足一个或多个预定条件,则检测锁定条件的损失。 通常,预定条件识别数据眼的损失(例如,当数据眼不能被基本上被检测时),例如,基于数据眼的打开程度。 如果检测到锁定状态的丢失,则可以可选地重新启动时钟和数据恢复系统。

    METHOD AND APPARATUS FOR EQUALIZATION USING ONE OR MORE QUALIFIERS
    67.
    发明申请
    METHOD AND APPARATUS FOR EQUALIZATION USING ONE OR MORE QUALIFIERS 有权
    使用一个或多个合格者进行均衡化的方法和装置

    公开(公告)号:US20090110046A1

    公开(公告)日:2009-04-30

    申请号:US11930814

    申请日:2007-10-31

    IPC分类号: H03K5/159

    摘要: Methods and apparatus are provided for equalizing a received signal. A received signal is equalized by updating one or more equalization parameters; and discarding the updated equalization parameters if one or more predefined qualifier conditions are detected during the equalizing step. The received signal can optionally be equalized using the updated equalization parameters if the predefined qualifier conditions are not detected during the equalizing step. The updated equalization parameters can optionally be stored if the one or more predefined qualifier conditions are not detected during the equalizing step

    摘要翻译: 提供了用于均衡接收信号的方法和装置。 通过更新一个或多个均衡参数来使接收信号相等; 以及如果在均衡步骤期间检测到一个或多个预定义的限定条件,则丢弃所述更新的均衡参数。 如果在平衡步骤期间未检测到预定义的限定条件,则可以使用更新的均衡参数来选择性地均衡所接收的信号。 如果在均衡步骤期间未检测到一个或多个预定义限定条件,则可以可选地存储更新的均衡参数

    Methods And Apparatus For Determining Receiver Filter Coefficients For A Plurality Of Phases
    68.
    发明申请
    Methods And Apparatus For Determining Receiver Filter Coefficients For A Plurality Of Phases 有权
    用于确定多个相位的接收器滤波器系数的方法和装置

    公开(公告)号:US20090097541A1

    公开(公告)日:2009-04-16

    申请号:US11870908

    申请日:2007-10-11

    IPC分类号: H03H7/30

    CPC分类号: H04L1/205

    摘要: Methods and apparatus are provided for determining receiver filter coefficients for a plurality of phases. One or more coefficients for a receiver filter are determined by determining a first coefficient for a first phase of a data eye; and determining a second coefficient for a second phase of the data eye. The receiver filter may be, for example, a decision-feedback equalizer. The first and second coefficients may be determined by performing an LMS adaptation of decision-feedback equalization coefficients. In another embodiment, the first and second coefficients may be determined by obtaining eye opening metrics from a data eye monitor corresponding to each of the respective first phase and the second phase; and determining the respective first and second coefficients based on the eye opening metrics. The first and second phases can correspond to odd and even phases.

    摘要翻译: 提供了用于确定多个相位的接收机滤波器系数的方法和装置。 通过确定数据眼的第一阶段的第一系数来确定接收机滤波器的一个或多个系数; 以及确定所述数据眼睛的第二阶段的第二系数。 接收机滤波器可以是例如判决反馈均衡器。 可以通过执行判决反馈均衡系数的LMS适应来确定第一和第二系数。 在另一个实施例中,可以通过从对应于相应的第一阶段和第二阶段中的每一个的数据眼睛监视器获得眼睛开度度量来确定第一和第二系数; 以及基于所述眼睛开度度量确定相应的第一和第二系数。 第一和第二相可以对应于奇数和偶数相。

    Method and apparatus for performing digital pre-distortion
    70.
    发明授权
    Method and apparatus for performing digital pre-distortion 失效
    用于执行数字预失真的方法和装置

    公开(公告)号:US07378906B2

    公开(公告)日:2008-05-27

    申请号:US11672272

    申请日:2007-02-07

    IPC分类号: H03F1/26

    CPC分类号: H03F1/3241 H03F2200/468

    摘要: A pre-distorter that compensates for amplitude and phase distortion created by an amplifier. During a training session, the amplifier is stimulated with input signals of pre-selected amplitude and phase at various temperatures and the amplifier output is captured and converted into data sets. Polynomials are then fitted to the data sets and inverses of the polynomials are determined. The coefficients of the inverse polynomials are then saved for each temperature. During operation, the amplifier temperature is predicted based on the amplifier input signal and the coefficients associated with the predicted temperature are selected to be applied to the input signal to compensate for amplitude and phase distortion caused by the amplifier.

    摘要翻译: 一个预失真器,用于补偿放大器产生的幅度和相位失真。 在训练期间,放大器用各种温度的预选幅度和相位的输入信号进行激励,并且放大器输出被捕获并转换为数据集。 然后将多项式拟合到数据集中,并确定多项式的倒数。 然后针对每个温度保存逆多项式的系数。 在操作期间,基于放大器输入信号预测放大器温度,并且选择与预测温度相关联的系数以施加到输入信号以补偿由放大器引起的幅度和相位失真。