公开(公告)号：US08600322B2

公开(公告)日：2013-12-03

申请号：US13689028

申请日：2012-11-29

Applicant: Broadcom Corporation

Inventor： Kevin T. Chan

IPC: H04B1/04 ,  H01Q11/12

CPC classification number: H04B1/02 ,  H04W52/52

Abstract: A transmitter includes a detection element to determine when a current power requirement of a communication link is less than the standard transmit power. The current power requirement may be determined by a current operation condition of the communication link, for instance. The transmit power of the transmitter may be set to be less than the standard power in any of a variety of ways. For example, a center tap voltage of the transmitter may be reduced. In another example, a class of operation of the transmitter may be changed. In yet another example, the transmitter may include a current mirror having a plurality of diode-connected transistors coupled in parallel, thereby reducing the current at output terminals of the transmitter. Reducing, the current at the output terminals decreases the output power of the transmitter, which may reduce the power consumed by the transmitter.

Abstract translation: 发射机包括检测元件，用于确定通信链路的当前功率需求何时小于标准发射功率。 例如，当前功率需求可以由通信链路的当前操作条件来确定。 发射机的发射功率可以以各种方式中的任何一种设置为小于标准功率。 例如，可以减小发射机的中心抽头电压。 在另一示例中，可以改变发射机的一类操作。 在又一示例中，发射机可以包括具有并联耦合的多个二极管连接的晶体管的电流镜，从而降低发射器的输出端处的电流。 减少输出端子的电流会降低发射机的输出功率，从而降低发射机的功耗。

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。