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    Systems and methods for providing a compatible backplane operation mechanism for 2.5-gigabit high-speed ethernet
    1.
    发明授权
    Systems and methods for providing a compatible backplane operation mechanism for 2.5-gigabit high-speed ethernet 有权

    公开(公告)号：US10148597B1

    公开(公告)日：2018-12-04

    申请号：US15400435

    申请日：2017-01-06

    Applicant: Marvell International Ltd.

    Inventor： William Lo

    IPC: H04L12/931 ,  H04L29/06 ,  H04L12/40 ,  H04L29/08 ,  H04L12/24

    Abstract: Embodiments described herein provide a method for providing a compatible backplane operation mechanism for 2.5-gigabit Ethernet. A first input of data including a first sequence-ordered set in compliance with a first interface protocol is received from a medium access control (MAC) layer. The first input of data is encoded into four outputs of encoded data including a second sequence-ordered set in compliance with a second interface protocol. The first sequence-ordered set in a first form of a sequence code followed by three bytes of data is mapped to the second sequence-ordered set in a second form of consecutive units of the sequence code followed by an encoded data byte. The four parallel outputs of encoded data are serialized into a serial output. The serial output to a linking partner is transmitted on a physical layer of an Ethernet link at a speed specified in the second interface protocol.

    Systems and methods for operating according to an auto-negotiated data rate in a network switch
    4.
    发明授权
    Systems and methods for operating according to an auto-negotiated data rate in a network switch 有权
    根据网络交换机中自动协商的数据速率进行操作的系统和方法

    公开(公告)号：US09407562B1

    公开(公告)日：2016-08-02

    申请号：US14138569

    申请日：2013-12-23

    Applicant: Marvell International LTD.

    Inventor： Sehat Sutardja ,  William Lo

    IPC: H04L12/66 ,  H04L12/825

    CPC classification number: H04L47/25 ,  H04J3/18 ,  H04L12/2874 ,  H04L25/0262 ,  H04L49/3054 ,  H04L49/351 ,  H04L69/24

    Abstract: A network switch including a physical layer device and a media access controller. The physical layer device includes an auto-negotiation circuit configured to negotiate a first data rate for transmission of data between the physical layer device and a network client external to the network switch, and a first serializer interface configured to receive the first data rate from the auto-negotiation circuit. The media access controller includes a second serializer interface. The first serializer interface of the physical layer device is configured to, based on the negotiated first data rate received from the auto-negotiation circuit, selectively replicate portions of data received from the network client, and transmit the data to the second serializer interface of the media access controller at a second data rate regardless of the first data rate negotiated between the auto-negotiation circuit and the network client. The first data rate and the second data rate are different.

    Abstract translation: 包括物理层设备和媒体接入控制器的网络交换机。 物理层设备包括自动协商电路，被配置为协商用于物理层设备与网络交换机外部的网络客户端之间的数据传输的第一数据速率，以及第一串行接口，被配置为从第一数据速率接收来自 自动协商电路。 媒体访问控制器包括第二串行器接口。 物理层设备的第一串行器接口被配置为：基于从自动协商电路接收的协商的第一数据速率，选择性地复制从网络客户端接收的数据部分，并将数据发送到第二串行器接口 媒体访问控制器以第二数据速率，而不管在自动协商电路和网络客户端之间协商的第一数据速率。 第一数据速率和第二数据速率是不同的。

    Network interface with autonegotiation and cable length measurement
    5.
    发明授权
    Network interface with autonegotiation and cable length measurement 有权
    具有自动协商和电缆长度测量的网络接口

    公开(公告)号：US08797909B1

    公开(公告)日：2014-08-05

    申请号：US13926562

    申请日：2013-06-25

    Applicant: Marvell International Ltd.

    Inventor： William Lo

    IPC: H04L12/26 ,  H04L12/24 ,  H04L12/56 ,  H04L12/40 ,  H04L12/413

    CPC classification number: H04L41/0886 ,  H04L41/0806 ,  H04L41/12

    Abstract: A network interface to be implemented with a first network device is configured to autonegotiate a network link with a second network device by advertising a first selector field. The first selector field indicates that the first network device is capable of a first speed. The network interface is further configured to listen for a second selector field advertised by the second network device and stall autonegotiation while listening for the second selector field. The network interface is further configured to, in response to the second selector field indicating that the second network device is capable of communicating over the network link using the first speed, determine a cable length between the first and second network devices. The network interface is further configured to, in response to the cable length being less than a first predetermined threshold, select the first speed for communication over the network link.

    Abstract translation: 用第一网络设备实现的网络接口被配置为通过广告第一选择器字段来与第二网络设备自动协商网络链路。 第一选择器字段指示第一网络设备能够具有第一速度。 网络接口还被配置为监听由第二网络设备发布的第二选择器字段，并且在监听第二选择器字段的同时停止自动协商。 网络接口还被配置为响应于第二选择器字段指示第二网络设备能够使用第一速度通过网络链路进行通信，确定第一和第二网络设备之间的电缆长度。 网络接口还被配置为响应于电缆长度小于第一预定阈值，选择用于通过网络链路进行通信的第一速度。

    Methods and apparatus for performing reverse auto-negotiation in network communication
    6.
    发明授权
    Methods and apparatus for performing reverse auto-negotiation in network communication 有权

    公开(公告)号：US09531586B1

    公开(公告)日：2016-12-27

    申请号：US14171132

    申请日：2014-02-03

    Applicant: Marvell International Ltd.

    Inventor： William Lo ,  Francis Campana

    IPC: H04L12/24

    CPC classification number: H04L41/0806 ,  H04L12/4013

    Abstract: The present invention relates to methods and apparatus for performing reverse auto-negotiation, in which one network device establishes a link with another network device at a preferred operating mode (e.g., the lowest speed) common to both devices without linking twice. The physical layer of a local network device (local PHY) may stall the normal auto-negotiation process with the link partner, while receiving the abilities of the link partner. The local PHY may then transmit a signal having only the preferred common operating mode (e.g., the lowest speed) encoded within. The link partner may then conclude that the local PHY is only capable of the preferred common operating mode (e.g., the lowest speed) and a link between the two devices may be established at that common mode.

    8/10 and 64/66 aggregation
    7.
    发明授权
    8/10 and 64/66 aggregation 有权
    8/10和64/66聚合

    公开(公告)号：US08982915B1

    公开(公告)日：2015-03-17

    申请号：US13899877

    申请日：2013-05-22

    Applicant: Marvell International Ltd.

    Inventor： William Lo

    IPC: H04J3/04 ,  H04L25/14 ,  H04B1/04 ,  H03M9/00

    CPC classification number: H04L25/14 ,  H03M9/00 ,  H04B1/0483 ,  H04J3/047 ,  H04L25/4908

    Abstract: A network interface includes an interleaver module and line drivers. The interleaver module receives symbols on a plurality of input lanes. The symbols are arranged in groups, and each group includes one symbol from each of the plurality of input lanes. The symbols within each group are received concurrently on the plurality of input lanes. The interleaver module also serially outputs the symbols of a first group of the groups onto a first output lane of a plurality of output lanes, serially outputs the symbols of a second group of the groups onto a second output lane of the plurality of output lanes, and serially outputs the symbols of a third group of the groups onto the first output lane. The line drivers drive data based on the plurality of output lanes onto respective lanes of a physical medium.

    Abstract translation: 网络接口包括交织器模块和线路驱动器。 交织器模块在多个输入通道上接收符号。 符号被分组排列，并且每个组包括来自多个输入通道中的每一个的一个符号。 每个组中的符号在多个输入通道上同时接收。 交织器模块还将多个组的第一组的符号串行地输出到多个输出通道的第一输出通道上，将第二组组的符号串行地输出到多个输出通道的第二输出通道上， 并且将第三组的符号串行地输出到第一输出通道上。 线路驱动器将基于多个输出通道的数据驱动到物理介质的相应车道上。

    Network device and method for powering a media access controller
    8.
    发明授权
    Network device and method for powering a media access controller 有权
    网络设备和为媒体接入控制器供电的方法

    公开(公告)号：US08837468B1

    公开(公告)日：2014-09-16

    申请号：US13730085

    申请日：2012-12-28

    Applicant: Marvell International Ltd.

    Inventor： William Lo ,  Ozdal Barkan

    IPC: H04L12/50 ,  H04L12/28 ,  H04L12/66 ,  H04J3/16 ,  G06F1/00 ,  H04L29/08 ,  G06F1/32 ,  G06F1/26

    CPC classification number: G06F1/26 ,  G06F1/3209 ,  G06F1/3287 ,  H04L29/08099 ,  H04Q2213/13097 ,  H04Q2213/1332 ,  H04Q2213/13362 ,  Y02D10/171 ,  Y02D50/20

    Abstract: A network device including a physical layer device and a media access controller. The physical layer device includes a first interface, and is configured to receive packets including a first packet and a second packet. The media access controller includes a second interface connected to the first interface of the physical layer device. The physical layer device is configured to: in response to the first packet, generate a power signal; transition at least one of the first interface and the second interface from being powered OFF to being powered ON; and output the power signal to the media access controller. The media access controller is configured to: receive the power signal; in response to the power signal, transition from being powered OFF to being powered ON; and subsequent to being powered ON, receive the second packet from the physical layer device via the first interface and the second interface.

    Abstract translation: 一种包括物理层设备和媒体接入控制器的网络设备。 物理层设备包括第一接口，并且被配置为接收包括第一分组和第二分组的分组。 媒体接入控制器包括连接到物理层设备的第一接口的第二接口。 物理层设备被配置为：响应于第一分组，产生功率信号; 将所述第一接口和所述第二接口中的至少一个从所述电源断开转换为被接通; 并将功率信号输出到介质存取控制器。 媒体接入控制器被配置为：接收电力信号; 响应于电源信号，从断电切换到接通电源; 并且在被接通电源之后，经由所述第一接口和所述第二接口从所述物理层设备接收所述第二分组。

    Power saving in a communication network for a motor vehicle
    9.
    发明授权
    Power saving in a communication network for a motor vehicle 有权

    公开(公告)号：US10256941B1

    公开(公告)日：2019-04-09

    申请号：US15985238

    申请日：2018-05-21

    Applicant: Marvell International Ltd.

    Inventor： William Lo

    IPC: H04L1/00

    Abstract: A first network interface device maintains a first counter, synchronized with a second counter of a second network interface device, that indicates a count of partial frames corresponding to communication frames exchanged between the first network interface device and a second network interface device via a communication link in a motor vehicle. While the first network interface device is in a low power mode of operation, the first network interface device i) uses the first counter to determine timing of windows, ii) powers up at least at a receive portion of the first network interface device during the windows to determine whether the second network device transmitted a signal configured to prompt the first network interface device to exit the low power mode of operation, and powers down between the windows in response to determining that the second network device did not transmit the signal.

    Auto-negotiation over a single twisted wire pair
    10.
    发明授权
    Auto-negotiation over a single twisted wire pair 有权

    公开(公告)号：US10177983B1

    公开(公告)日：2019-01-08

    申请号：US15888534

    申请日：2018-02-05

    Applicant: MARVELL INTERNATIONAL LTD.

    Inventor： William Lo

    IPC: H04L12/24 ,  H04L5/16

    Abstract: Systems, methods, and other embodiments associated with a method for performing auto-negotiation using a single conductive path are described. In one embodiment, a method includes performing, with a first device, auto-negotiation in half duplex mode with a second device by way of a single conductive path. The single conductive path connects the first device to the second device.

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