KIXDP425AD [INTEL]

Optimized for Broadband Applications; 优化宽带应用


型号：	KIXDP425AD
厂家：	INTEL
描述：	Optimized for Broadband Applications 优化宽带应用
文件：	总4页 (文件大小：274K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

product brief

Intel IXP425 Network

Processor Family

Optimized for Broadband Applications

Product Highlights

™

ꢀ

Intel XScale RISC core up to 533 MHz

Three network processor engines

Two high-speed serial interfaces

Two 10/100 Base-T Ethernet MACs with

MII/RMII interface

ꢀ

UTOPIA 2 interface—multiple

ADSL/G.SHDSL or VDSL support

With their Development Platform, a choice

of operating systems, and a broad range of

development tools, the Intel IXP425 network

processors provide a complete development

environment for faster time-to-market. This

network processor family offers the choice of

multiple clock speeds at 266, 400, and 533

MHz, with both Commercial (0° to 70° C) and

Extended (-40° to 85° C) temperature options.

ꢀ

PCI version 2.2 Host and Option interface

(

Hardware Security Accelerator IPsec:

)

DES, 3DES, SHA1, MD5

ꢀ

USB version 1.1 device controller

Two UARTS—one High-Speed UART

Intel

(

)

921.6 Kbaud and one Console UART

Internet Exchange

Architecture

(

)

230.4 Kbaud

ꢀ

32-bit wide SDRAM controller

Sixteen GPIO pins

Architected for Broadband Applications

16-bit configurable expansion bus

The Intel IXP425 network processor family

meets the requirements of next-generation

broadband applications by integrating a unique

distributed processing architecture that

features the performance of the Intel XScale

core and three Network Processor Engines

(NPEs). The combination of the four high-

performance processors provides tremendous

processing power and enables wire-speed

performance at both the LAN and WAN ports.

ATM, TDM, Ethernet MAC filtering, and

HDLC support

ꢀ

Operating system support for VxWorks*

and Linux*

Commercial and Extended temperature

options

Product Overview

To meet the growing demand from homes and

businesses for high-performance broadband

access services, manufacturers must develop

new networking products that are capable of

provisioning rich services. The Intel^®IXP425

network processors are designed to meet the

needs of last-mile applications, such as cus-

tomer premises equipment, and mini-DSLAMs

for multi-dwelling units (MxUs). These network

processors deliver wire-speed performance and

sufficient "processor headroom" for manufactur-

ers to add a variety of rich software services to

support their networking applications. These

are highly integrated network processors that

support multiple WAN and LAN technologies

giving customers a common architecture for

multiple applications.

Distributed Processing Architecture

The Intel XScale core and the three NPEs run

their instruction streams in parallel. The Intel

XScale core is fully compatible with ARM* V5T

Thumb instructions set and V5E DSP exten-

sions. Designed on the Intel^®0.18-micron

process technology, the Intel XScale core

delivers the industry-leading MIPs to power

consumption ratio and provides ample pro-

cessing headroom for the customer to add

differentiating product features.

(

)

library together with the Intel IXP425 network processors.

Customer applications configure and interact with the

NPEs through a high-performance API layer running on

the Intel XScale core.

Distributed Processing Architecture continued

The three NPEs are designed to offload many computa-

tionally intensive data plane operations from the Intel

XScale core. These tasks include: IP header inspection

and modification; packet filtering; packet error checking;

check sum computation; flag insertion and removal; PDU

segmentation and assembly; and encryption. The NPE

architecture includes an ALU, self-contained internal data

memory, an extensive list of I/O interfaces, together with

hardware acceleration engines (also known as NPE

coprocessors). It is the NPE coprocessor associated

with an NPE that targets a set of networking applications.

Each NPE coprocessor is designed to accelerate a

specific networking task that would otherwise take many

MIPs to complete by a stand-alone RISC processor.

Each NPE can take care of Layer 2 and, in some cases,

Layer 3 packets that are passed through them. For example,

the WAN/Voice NPE has one UTOPIA 2 interface and two

high-speed serial interfaces so its internal processing is

targeting the handling of AAL (1/2/5) SARing, TDM framing,

and HDLC processing. An MII/RMII interface is attached

to both the Ethernet NPE A and the Ethernet NPE B

respectively. The Ethernet NPE A also has two internal

coprocessors to accelerate VPN related tasks such as

3DES and Hashing at speeds up to full-rate ADSL. The

Ethernet NPE B is capable of handling 100Mb/s, full-duplex

Ethernet packet filtering. The extensive hardware capabilities

of these NPEs are all under the management of a set of

NPE microcode drivers that are released as a software

Wire-Speed Performance

The Intel IXP425 network processors implement a fast

path design in the NPE software library to provide

optimized performance for broadband applications.

The fast path design passes non-inspection IP packets

directly from the ingress port NPE (usually WAN/Voice

NPE with the xDSL WAN port) to the egress port NPE

(usually Ethernet NPE A or B with the Ethernet LAN port)

without the involvement of the Intel XScale core. Since

the vast majority of IP packets move from the WAN to

the Ethernet LAN, isolating these data flows to the NPEs

within the Intel IXP425 network processor produces a

significant throughput improvement by eliminating the

need to route packets through a central processor. The

most demanding situation occurs when small (64 byte)

IP packets are sent at the speed that saturates the

physical layer (wire speed). For example, nearly 10,000

(64 byte) packets per second will be sent downstream

in an ADSL connection that runs at the maximum wire

speed (8 Mb/s downstream). The NPEs and fast path

design in the Intel IXP425 network processors are capable

of providing, at minimum packet sizes, wire-speed perfor-

mance up to 52 Mb/s on the WAN side and 100 Mb/s on

the Ethernet LAN.

Highly-integrated Data, Voice, and

Security Functionality

On-chip integration of data, voice, and security functions

saves the cost of implementing separate devices and

supports easier integration with other hardware. Integrated

into the Intel XScale core are multiply and accumulate

functions that give customers the ability to do multimedia

processing without the need for external hardware. For

example, in a voice application, the Intel XScale core can

perform a wide variety of speech coding and telephony

algorithms without the need for an external DSP chip. In

addition, the network processors integrate two 10/100

Base-T Ethernet MACs with MII/RMII interface and simul-

taneous full-duplex operation. To further reduce the total

solution chip count, a SDRAM controller has been inte-

grated along with peripheral functions that include interrupt

controller, GPIO port, UART, watchdog timer and general-

purpose timers. A USB version 1.1 device controller is

integrated for those applications that require USB sup-

port. The Intel IXP425 network processors also provide

hardware acceleration for security applications. These

chips implement, in hardware, DES and 3DES data

encryption algorithms as well as SHA-1 and MD5

hashing algorithms typically used in VPN applications.

A direct connection to DSP chips and flash memory is

achieved through the expansion bus interface. By

integrating more functionality, Intel is reducing the total

solution chip count and cost for broadband applications.

chips, PCMCIA controllers, Ethernet MACs, and cable

MAC/PHYs. These network processors also feature

two high-speed serial interfaces. These interfaces can

serve as high-speed ports for direct connection to

T1/E1 framers or to industry-standard SLIC/CODECS.

Choice of Tools and Operating Systems Supports

Rapid Development

The Intel XScale microarchitecture offers a broad range

of tools together with support for two widely adopted

operating systems. The Intel IXP425 network processors

support VxWorks and the standard Linux 2.4 kernal.

MontaVista Software* will provide the support for Linux.

To help speed time-to-market and reduce development

costs, developers will have a wide choice of third-party

tools, including compilers, linkers, debuggers and

board support packages (BSPs). Tools include Wind

River* Tornado* 2.1.1 for the VxWorks 5.4 real-time

operating system, and the complete GNU* Linux

development suite.

Development Platform For Faster Time-to-Market

The Intel^®IXDP425 Network Processor Development

Platform is a powerful tool for developing and verifying

hardware and software for the Intel IXP425 network

processors. Developers can use this flexible and extend-

able platform to conduct rapid initial chip evaluation,

chip performance evaluation, product development

and prototyping. For additional information, refer to the

Intel IXDP425 Development Platform product brief.

Broad Range of LAN and WAN Capabilities

The Intel IXP425 network processors offer a full range of

broadband and LAN access solutions through multiple

integrated interfaces. Through the UTOPIA 2 interface,

there is performance to support up to eight ADSL PHYs,

eight G.SHDSL PHYs or one VDSL PHY. The PCI ver-

sion 2.2 Host and Option interface gives customers the

flexibility to directly connect such devices as 802.11x

Features

Benefits

ꢀ

Four high-performance processors in a distributed

Wire-speed performance; Able to offer rich data,

processing architecture

voice and security services

ꢀ

Highly-integrated data/voice/security functions

Reduced chip count; Cost savings;

Simplified design

ꢀ

Broad range of WAN/LAN capabilities

Flexibility; Common architecture for multiple platforms

ꢀ

Development Platform

Faster time-to-market

ꢀ

Commercial and Extended temperature options

Flexibility

Intel^®Internet Exchange Architecture

The Intel IXP425 network processors are part of Intel^®Internet Exchange Architecture (Intel^®IXA) which is a packet processing

architecture that provides a foundation for software portability across multiple generations of network processors and is

based on the Intel XScale microarchitecture. Additional information on Intel IXA is available on the Web site listed at the end

of this document.

Product Ordering Information

Order Number

FWIXP425AB

FWIXP425AC

FWIXP425AD

GWIXP425ABT

GWIXP425ACT

GWIXP425ADT

KIXDP425AD

Intel^®IXP425 Network Processor, 266 MHz

ꢀ

Intel^®IXP425 Network Processor, 400 MHz

ꢀ

Intel^®IXP425 Network Processor, 533 MHz

ꢀ

Intel^®IXP425 Network Processor, 266 MHz Extended Temperature

ꢀ

Intel^®IXP425 Network Processor, 400 MHz Extended Temperature

ꢀ

Intel^®IXP425 Network Processor, 533 MHz Extended Temperature

ꢀ

Intel^®IXDP425 Network Processor Development Platform

ꢀ

Intel^®IXP425 Network Processor Family Literature

Order Number

279051-001

279052-001

Intel^®IXP425 Network Processor Family Product Brief

ꢀ

Intel^®IXDP425 Network Processor Development Platform Product Brief

ꢀ

Please contact your Intel Representative for the following documents:

Intel^®IXP425 Network Processor Datasheet

ꢀ

Intel^®IXP425 Network Processor Developer's Manual

ꢀ

Intel^®IXP425 Network Processor Programmer's Guide

ꢀ

Intel Access

Developer‘s Site

http://developer.intel.com/

Network Processor Web Site

http://www.intel.com/design/network/ixa.htm

http://developer.intel.com/design/network

http://developer.intel.com/design/litcentr/

Intel^®Internet Exchange Architecture

Networking and Communications Building Blocks

Other Intel Support:

Intel Literature Center

(800) 548-4725 7a.m. to 7 p.m. CST (U.S. and Canada)

International locations please contact your local sales office.

General Information Hotline

(800) 628-8686 or (916) 356-3104 5 a.m. to 5 p.m. PST

Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights

is granted by this document. Except as provided in Intel’s Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims

any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability,

or infringement of any patent, copyright, or other intellectual property right. Intel products are not intended for use in medical, life-saving or life-sustaining applica-

tions. Intel may make changes to specifications and product descriptions at any time, without notice.

Designers must not rely on the absence or characteristics of any features or instructions marked “reserved” or “undefined.” Intel reserves these for future definition and

shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.

Intel, the Intel logo, and Intel XScale are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.

*Other names and brands may be claimed as the property of others.

For more information, visit the Intel Web site at: developer.intel.com

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Intel Corporation

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Order Number: 279051-001 Printed in USA/0202/5K/ASI/CM

KIXDP425AD [INTEL]

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