公开(公告)号：US09270291B1

公开(公告)日：2016-02-23

申请号：US14662001

申请日：2015-03-18

Applicant: Broadcom Corporation

Inventor： Gavin D. Parnaby ,  Vasudevan Parthasarathy ,  John S. Wang

IPC: H03M1/12 ,  H03M1/10 ,  H04B17/21 ,  H04L7/00

CPC classification number: H03M1/121 ,  H03M1/0836 ,  H03M1/1028 ,  H03M1/1215 ,  H03M1/1245 ,  H04B17/21 ,  H04L7/0004

Abstract: Methods and apparatuses are described for timing skew mitigation in time-interleaved ADCs (TI-ADCs) that may be performed for any receive signal without any special signals during blind initialization, which may be followed by background calibration. The same gain/skew calibration metrics may be applied to baud sampled and oversampled systems, including wideband receivers and regardless of any modulation, by applying a timing or frequency offset to non-stationary sampled signals during initial training. Skew mitigation is low latency, low power, low area, noise tolerant and scalable. Digital estimation may be implemented with accumulators and multipliers while analog calibration may be implemented with adjustable delays. DC and gain offsets may be calibrated before skew calibration. The slope of the correlation function between adjacent samples may be used to move a timing skew estimate stochastically at a low adaptive rate until the skew algorithm converges.

Abstract translation: 描述了用于在盲初始化期间可以对任何接收信号执行任何特殊信号的时间交织ADC（TI-ADC）中的定时偏移缓解的方法和装置，其可以在背景校准之后进行。 相同的增益/偏斜校准度量可以应用于波特率采样和过采样系统，包括宽带接收机，无论任何调制，通过在初始训练期间对非平稳采样信号应用定时或频率偏移。 倾斜减轻是低延迟，低功率，低面积，噪声容限和可扩展性。 数字估计可以用累加器和乘法器来实现，而模拟校准可以用可调延迟来实现。 在校准偏差之前可以校准直流和增益偏移。 相邻样本之间的相关函数的斜率可以用于以低自适应速率随机移动定时偏差估计，直到偏斜算法收敛。

公开(公告)号：US20160381190A1

公开(公告)日：2016-12-29

申请号：US14805191

申请日：2015-07-21

Applicant: Broadcom Corporation

Inventor： Gavin D. Parnaby ,  John S. Wang ,  Michael Le ,  Chung-Jue Chen

IPC: H04L29/06 ,  H04L29/08

CPC classification number: H04L69/24 ,  H04L5/1438 ,  H04L5/1446 ,  H04L25/0204 ,  H04L29/06 ,  H04L41/0853 ,  H04L49/3054 ,  H04L65/1069 ,  H04L67/14 ,  H04L67/142 ,  H04L69/08 ,  H04L2025/03426

Abstract: Methods, systems, and apparatuses, including electrical circuitry, are described for auto-negotiation. Active cables, active backplanes, and line cards may include one or more instances of electrical circuitry and/or integrated circuits that intercept advertisements of standard auto-negotiation protocol signaling from an initiating device for establishment of communication links with a receiving device. Auto negotiation information in the intercepted signaling may be translated and encoded into signaling in accordance with the capabilities of the receiving device. Active cables and active backplanes may also include one or more connection components between instances of electrical circuitry and/or integrated circuits to provide high-speed transmission of data packets encapsulating the auto-negotiation information in a format that differs from the standard auto-negotiation protocol.

Abstract translation: 描述了用于自动协商的方法，系统和装置，包括电路。 有源电缆，有源背板和线卡可以包括电路和/或集成电路的一个或多个实例，该电路和/或集成电路拦截来自发起设备的用于建立与接收设备的通信链路的标准自动协商协议信令的广告。 拦截信令中的自动协商信息可以根据接收设备的能力被转换并编码成信令。 主动电缆和主动背板还可以包括电路和/或集成电路的实例之间的一个或多个连接部件，以提供以与标准自动协商协议不同的格式来封装自动协商信息的数据分组的高速传输 。