公开(公告)号：US07336517B2

公开(公告)日：2008-02-26

申请号：US11746259

申请日：2007-05-09

Applicant: Mark Lysinger

Inventor： Mark Lysinger

IPC: G15C15/00 ,  G15C7/06 ,  G15C7/00 ,  G06F13/00

CPC classification number: G06F7/74 ,  G11C15/00 ,  G11C15/04

Abstract: A priority encoder can be used for a Content-Addressable Memory (CAM) device that typically has an array of CAM cells arranged in columns and rows with each row having a match signal indicative that compare data has matched data within the respective row. A priority encoder is operatively connected to the array of CAM cells and determines a highest priority matching address for data within the array of CAM cells. The priority encoder includes match lines associated with respective rows and precharged bus lines connected into respective match lines that are discharged whenever there is a match signal such that the highest precharged bus line discharged results in an encoded address.

Abstract translation: 优先编码器可以用于通常具有排列成列和行的CAM单元阵列的内容寻址存储器（CAM）设备，每个行具有指示比较数据具有相应行内的匹配数据的匹配信号。 优先编码器可操作地连接到CAM单元阵列，并确定CAM单元阵列内的数据的最高优先级匹配地址。 优先编码器包括与相应行相关联的匹配线和连接到相应匹配线中的预充电总线，每当匹配信号被放电时，放电的最高预充电总线导致编码地址。