公开(公告)号：US08284801B1

公开(公告)日：2012-10-09

申请号：US12693988

申请日：2010-01-26

申请人： Mehulkumar R. Vashi ,  Robert Yin ,  Jayant Mittal ,  Nicholas McKay ,  Julian Kain ,  Martin B. Rhodes ,  Mark R. Nethercot

发明人： Mehulkumar R. Vashi ,  Robert Yin ,  Jayant Mittal ,  Nicholas McKay ,  Julian Kain ,  Martin B. Rhodes ,  Mark R. Nethercot

IPC分类号： H04J3/16

CPC分类号： H04L43/0817 ,  G06F2221/2105

摘要： Method and apparatus for controlling an operating mode of an Ethernet media access controller (MAC) embedded in a programmable device is described. In some examples, a configuration circuit is configured to receive a configuration signal from configuration memory of the programmable device and a host signal from a host bus of the programmable device, and configured to output a control length check disable signal the value of which depends on the value of at least one of the configuration signal or the host signal. A parameter check circuit is configured to receive a control signal derived from at least one of the control length check disable signal or the configuration signal, and configured to selectively disable checking a length of each control frame in frames received by the Ethernet MAC based on a value of the control signal.

摘要翻译： 描述了用于控制嵌入在可编程设备中的以太网介质访问控制器（MAC）的操作模式的方法和装置。 在一些示例中，配置电路被配置为从可编程设备的配置存储器接收配置信号和来自可编程设备的主机总线的主机信号，并且被配置为输出其值取决于的控制长度检查禁用信号 配置信号或主机信号中的至少一个的值。 参数检查电路被配置为接收从控制长度检查禁止信号或配置信号中的至少一个导出的控制信号，并且被配置为选择性地禁止基于以太网MAC接收的帧中的每个控制帧的长度 控制信号的值。