Datasheet > MCM69C233WP

MCM69C233WP

更新时间： 2024-11-08 03:05:39

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		PC
页数	文件大小	规格书
16页	303K
描述
MPC8260 PowerQUICC II-TM to CAM Interfacing ? MCM69C233

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MCM69C233WP 数据手册

Freescale Semiconductor, Inc.

White Paper

MCM69C233WP/D

Rev. 2, 1/2003

MPC8260 PowerQUICC II

to CAM Interfacing –

MCM69C233

Eric Jackson

The purpose of this document is to provide the designer a hardware method of interfacing the

Motorola MPC8260 PowerQUICC II^TMIntegrated Communications Processor with the

MCM69C233 Motorola Flexible Content Addressable Memory (CAM).

Technical Marketing,

NCSD

Networking &

Computing Systems

Group

The following topics are addressed:

Topic

Page

Section 1, “MPC8260 PowerQUICC II

”

Section 2, “Motorola Content Addressable Memories (CAMs)”

Section 3, “CAM Interface”

Section 4, “MPC8260 Register Programming”

Section 5, “References”

1 MPC8260 PowerQUICC II

Motorola’s PowerQUICC II^TMprocessor family is the next generation of Motorola’s leading

PowerQUICC line of integrated communication processors. The MPC8260 integrates two

main components, the embedded MPC603e G2 core and the Communications Processor

Module (CPM). The CPM simultaneously supports three fast serial communications

controllers (FCCs), two multichannel controllers (MCCs), four serial communications

controllers (SCCs), two serial management controllers (SMCs), one serial peripheral interface

(SPI), and one I2C interface.

2 Motorola Content Addressable Memories

(CAMs)

The MCM69C233 is a ﬂexible content addressable memory (CAM) that can contain 4096

entries of 64 bits. It is implemented with standard 4-transistor SRAM cells. The widths of the

match ﬁeld and the output ﬁeld are programmable. At 66 MHz, the match time is designed to

be less than or equal to 210 nanoseconds. As a result, the Motorola CAM is well suited for

datacom applications such as Virtual Path Identiﬁer/Virtual Circuit Identiﬁer (VCI/VPI)

translation in ATM switches up to OC12 (622 Mbps) data rates and Media Access Control

(MAC) address lookup in Ethernet/Fast Ethernet bridges. The CAM is also well suited for

fully associative disk drive cache and RAID applications. The match request rate of the

MCM69C233 is user deﬁned with a trade-off between the match request rate and the rate of

new entries added to the CAM.

For More Information On This Product,

Go to: www.freescale.com

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