公开(公告)号：EP1750280A2

公开(公告)日：2007-02-07

申请号：EP06253766.7

申请日：2006-07-19

Applicant: STMicroelectronics, Inc.

Inventor： Lysinger, Mark

IPC: G11C15/04

CPC classification number: G11C15/04

Abstract: A programmable priority encoder is disclosed for use with the device such as a Content Addressable Memory (CAM) device having a plurality of array objects to be encoded in binary and arranged in row and columns. Match lines are adapted to be connected to a plurality of arrayed objects associated with respective rows. A plurality of encoder cells, each having a memory element and forming an encoder block are arranged in rows. Precharged bus lines are operative with the encoder cells and match lines. The precharged bus lines are discharged indicating a match and priority is assigned to rows based on logic values stored within the memory elements of the encoder cell.

Abstract translation: 公开了一种可编程优先级编码器，用于与诸如内容可寻址存储器（CAM）设备之类的设备一起使用，该设备具有将以二进制编码并且按行和列排列的多个阵列对象。 匹配线适于连接到与相应行相关联的多个排列对象。 按行排列多个编码器单元，每个编码器单元具有存储器元件并形成编码器块。 预充电总线与编码器单元和匹配线一起工作。 预充电的总线被放电，指示匹配，并且基于存储在编码器单元的存储器元件内的逻辑值将优先级分配给行。

公开(公告)号：EP1727150A3

公开(公告)日：2007-07-25

申请号：EP06251760.2

申请日：2006-03-30

Applicant: STMicroelectronics, Inc.

Inventor： Lysinger, Mark

IPC: G11C15/00 ,  G11C15/04

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.

公开(公告)号：EP1750280B1

公开(公告)日：2010-09-08

申请号：EP06253766.7

申请日：2006-07-19

Applicant: STMicroelectronics, Inc.

Inventor： Lysinger, Mark

IPC: G11C15/04

CPC classification number: G11C15/04

公开(公告)号：EP1750280A3

公开(公告)日：2007-04-11

申请号：EP06253766.7

申请日：2006-07-19

Applicant: STMicroelectronics, Inc.

Inventor： Lysinger, Mark

IPC: G11C15/04

CPC classification number: G11C15/04

Abstract: A programmable priority encoder is disclosed for use with the device such as a Content Addressable Memory (CAM) device having a plurality of array objects to be encoded in binary and arranged in row and columns. Match lines are adapted to be connected to a plurality of arrayed objects associated with respective rows. A plurality of encoder cells, each having a memory element and forming an encoder block are arranged in rows. Precharged bus lines are operative with the encoder cells and match lines. The precharged bus lines are discharged indicating a match and priority is assigned to rows based on logic values stored within the memory elements of the encoder cell.

公开(公告)号：EP1727150A2

公开(公告)日：2006-11-29

申请号：EP06251760.2

申请日：2006-03-30

Applicant: STMicroelectronics, Inc.

Inventor： Lysinger, Mark

IPC: G11C15/00 ,  G11C15/04

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。