公开(公告)号：US20140321478A1

公开(公告)日：2014-10-30

申请号：US14264223

申请日：2014-04-29

Applicant: Broadcom Corporation

Inventor： Mark Berman ,  Manolito M. Catalasan ,  Bruce Conway ,  Kevin T. Chan

IPC: H04L12/933

CPC classification number: H04L49/101 ,  H04L49/351

Abstract: A programmable channel-swap crossbar switch for swapping signal flow from one channel to another within an Ethernet physical layer device (PHY) is presented. The crossbar switch includes two or more programmed multiplexers, each multiplexer configured to receive two or more input signals and to select which one of the input signals to pass to a programmed corresponding channel, such that a first, input signal associated with a first channel can be swapped to a second channel as operating conditions necessitate. The crossbar switch can be used for Ethernet communications with various communication speeds, such as 10BaseT, 100BaseT, and Gigabit communications. A crossbar switch can be used in both a transmit path and a receive path. Two crossbar switches may be used in a receive path in order to undo channel swapping for control signal processing. A method of channel-swapping in an Ethernet PHY communications system is also presented.

Abstract translation: 提出了一种用于在以太网物理层设备（PHY）中交换从一个通道到另一个通道的信号流的可编程通道交换交叉开关。 交叉开关包括两个或多个编程多路复用器，每个多路复用器被配置为接收两个或更多个输入信号，并且选择输入信号中的哪一个传递到编程的对应信道，使得与第一信道相关联的第一输入信号可以 由于操作条件的需要，可以交换到第二个通道。 交叉开关可用于具有各种通信速度的以太网通信，例如10BaseT，100BaseT和千兆位通信。 交叉开关可用于发送路径和接收路径。 可以在接收路径中使用两个交叉开关，以便去除用于控制信号处理的通道交换。 还提出了以太网PHY通信系统中的信道交换方法。