NP3740PBI-700 [AMCC]

Telecom IC;


型号：	NP3740PBI-700
厂家：	APPLIED MICRO CIRCUITS CORPORATION
描述：	Telecom IC
文件：	总4页 (文件大小：292K)
中文：	中文翻译
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P R O D U C T B R I E F

nP3740

5-Gbps Network Processor with Integrated Traffic Manager

The nP3740 integrated network processor is a derivative

of the nP3700 family, the first network processor family to

incorporate the latest nP⁵™ technology. Developed over several generations of traffic management

and network processor products, nP⁵unites the flexibility of the industry’s highest performance

network processing nPcore with the most widely deployed and mature traffic management

technology. This unique combination enables developers to deliver extremely fine-grained control of

subscriber traffic, without impacting the ability to perform complex protocol inter-working at media

speeds. The nP3740 is designed from the ground up to provide software compatibility with the earlier

generations of AMCC Network Processors. The single-stage programming model dramatically

simplifies software development and troubleshooting and enables quickest time-to-market.

Features

Supports 5-Gbps Traffic

•

nP⁵Technology

Mix and match Gigabit Ethernet,

POS, and ATM traffic

•

Standalone or as a line card in a

larger system

Proven nPcore

Architecture

•

3 nPcores at 700 MHz optimized for

network processing

Single-stage single-image

programming model

High-speed RLDRAM-II memory

interfaces for payload and context

storage

Industry Leading Integration and

Performance

Rapid Application Development

AMCC's nPsoft™ development environment

speeds the development, debugging, and

delivery of feature-rich, wire-speed, Layer 2-7

applications by combining the simplified

nPcore™ programming model of all AMCC NPUs

with open, layered nPsoft Services, advanced

development tools, rich reference application

libraries, and both simulation and real

hardware-based development systems.

Because the nP3740 allows easy API access to

on-chip coprocessors for complex tasks,

customer differentiating features can be created

faster and with fewer lines of code.

The nP3740 is a 5-Gbps network processing and

traffic management solution – the highest

performance integrated solution in the industry.

In addition to high-performance packet

processing and fine-grained traffic

management, the nP3740 includes specialized

coprocessors that perform classification,

policing, and coherent database management

for unparalleled line-rate performance. The

nP3740 supports high-performance memory

interfaces such as RLDRAM II and QDR-II SRAM.

The devices are offered in different speed

grades to provide a range of performance and

cost options tuned to the application.

•

Per-flow metering and statistics for

millions of flows

Integrated Traffic Manager

•

Per-flow queuing and scheduling

Sophisticated, fine-grained sched-

uling algorithms

Standards-Compliant

Interfaces

•

Integrated GE MACs (GMII)

•

OIF SPI-3, OIF SPI-4 Phase 2

Applications

•

VoIP/media Gateways

DSLAM

Core, Edge Routers

WLAN ENterprise access

L4-L7 Applications

Benefits

•

High integration:

Significant form factor, cost, and

power savings

Hardware-based Traffic Manager for

guaranteed performance

Software compatibility with

nP32xx, nP345x, nP36xx, nP37xx,

and nP7250

SPI3/UT3

•

nP3740

SPI4.2

LA1

GE /PPC

•

Simple programming model for

rapid development and quick

time-to-market

Memory / Coprocessor

Control Plane

CPU

Software portability

nP3740 Interface Diagram

nP3740

– Context Memory:

High Performance nPcore

Three nPcores at up to 700 MHz

Integrated Coprocessors

nP3740 Highlights

Interfaces

Two banks of 36-bit RLDRAM II

operating at up to 250 MHz (32 Gbps

with ECC)

•

Line Interfaces – cell and packet

•

Policy Engine for efficient packet

classification

– Channel Service Memory:

One bank of 36-bit QDR-II SRAM

operating at up to 250 MHz

SPI-3/UT-3

SPI-4.2

•

Special Purpose Unit (SPU) for per-flow

policing

nP3740

– Flow Database Memory:

Two banks of 18-bit QDR-II SRAM

operating at up to 250 MHz

•

Hashing Unit

•

Fabric Interface: OIF SPI-4 Phase 2

– 800 MHz

On-Chip Debugger (OCD)

Integrated Traffic Manager

•

External Memory Interfaces:

RLDRAM II memory controllers

•

CPU Interfaces: PowerPC and Gigabit

Ethernet

Hierarchical Traffic Manager with

fine-grained flow-based traffic

management

– Payload Memory:

External Search Interface

– Compliant with NPF

Two banks of 36-bit RLDRAM II

operating at up to 250 MHz (32 Gbps

with ECC)

•

Leverages field-proven nPX5710 and

nPX5720 technology

– Backward compatibility mode with

existing TCAMs

•

Debug port

JTAG port

NPF(QDR)

QDR

RDRLDARMAM

DRRALMD/SRRAAMM

Scratch

Pad

Hash

Engine

Policy

Engine

XMI

Cache

SPI3/UT3

XSC

SPU

Memory Access Unit

3 nPcores @ 700 MHz

nPcore @ 700 MHz

Soft TM

24 Tasks

72 Tasks

Traffic

Manager

FE/GE

MACs

SPI4.2

Statistics

Engine

Queuing

Scheduling

Line

Interfaces

(CSM)

Packet Transform

Engine

(Line/CPU)

Engine

(PTE)

HOHSOT SCTPUCPU

16-bit

DEBUG

FCN

JTAG

nP3740 Block Diagram

nP3740

require increased processing time. This

exception channel handles special packets

through a secondary path, without

affecting the deterministic line-rate

performance of the regular packets in the

primary path. The addition of a special

preprocessor, the Channel Service Module

(CSM), offers a store-and-forward capability

to nP37xx architecture. The CSM is able to

buffer incoming traffic according to the

level of channelization of the line interfaces.

A sizable CSM buffer absorbs very large

bursts in the incoming traffic without data

losses.

nPcore Architecture

Traffic Management

AMCC's software programmable nPcores

are built from the ground up for both

packet- and cell-based networking data

plane operations. The nP3740 supports

5-Gbps full-duplex operation utilizing a

cluster of three nPcores. Each nPcore has 24

separate tasks, yielding a total of 72, which

are all available for either ingress or egress

processing. The nPcores implement

The traffic management block in the

nP3740 leverages AMCC’s expertise and

technology from the nPX5700 family of

traffic managers.

The nP3740 implements a hierarchical

scheduling architecture to provide multiple

levels of bandwidth provisioning and

per-subscriber guarantees. This hierarchy

consists of four logical levels: flow, pipe,

subport and port. Minimum and maximum

bandwidth control can be configured on

multiple levels. WFQ and Strict Priority

scheduling algorithms are also

implemented by the traffic management

block. For ATM applications, non-real-time

and real-time CBR and VBR connections can

be configured for a desired subset of flows.

zero-cycle task switching and zero-cycle

branching for enhanced performance.

The nPcores are surrounded by on-chip

coprocessing engines to accelerate

sophisticated network processing

functions, such as packet classification,

route and context searching, statistics

gathering, metering, policing, and packet

transformations. The nPcores, in

Single-Stage, Single-Image

Programming

AMCC's nPcore architecture implements a

simple single-stage programming model.

In this model each cell or packet is

processed in its entirety, from start to finish,

by a single task in a single nPcore. With this

single-stage model, the entire data flow

algorithm can be created as a single

complete software program, just as it

would be on a non-multiprocessor system,

allowing the same program image to be

executed identically by each task on each

nPcore. This approach greatly simplifies

programming while optimizing

Input Admission Control

combination with these on-chip

Sophisticated cell and packet admission

controls are configurable in the nP3740.

This includes execution of standard discard

mechanisms such as WRED, EPD, and TPD

in hardware or the option to perform

variations in software.

coprocessing engines, implement Network

Instruction Set Computing (NISC)

Architecture. This NISC architecture

dramatically reduces the number of lines of

code required to implement many

advanced networking tasks.

A key addition to the nP37xx architecture is

the exception channel processing that

provides flexibility in handling packets that

performance.

Ohio

S4806

PRS

SPI-4

nP3740

Network

Processor

Fiber Optic

Transceiver

SONET

CDR

UT3

Fabric

OC-12/48

ATM/POS

Framer

Interface

nP3740 OC-48 ATM/POS Line Card

S P E C I F I C AT I O N S

nP3740

Specifications

Network Processing

Configurations

•

POS and ATM

•

Ethernet

• 10/100/1000 Ethernet Interface for Line or Host CPU

•

2xSPI-3, SPI-4.2

Any type of OC-n channelization

Flexible bandwidth allocation

For example, Full-duplex OC-48, OC-12 plus 12xOC-3

•

Flexible bandwidth provisioning per user/per CoS

Dynamic bandwidth reuse

Highly granular flow control

nPcore Performance

•

Three nPcores running at up to 700 MHz

24 tasks per nPcore, total 72 tasks

64 KB instruction space, 16K instructions

•

Dynamic Task Allocation

Zero Cycle Task Switching

Integrated Coprocessors

•

Policy Engine — Efficient packet classification

SPU — Data coherency

•

Hash Engine — Programmable engine to accelerate table lookups

•

Programmable Polynomial (for example, CRC generation)

Statistics Engine

Atomic Programmable Statistics Collection

•

Enables Single and Dual Leaky Bucket and Token Bucket policing on cells and

frames

•

Traffic Management

•

Standard Discard Mechanisms

•

Per-flow queuing and scheduling:

•

WRED

Dynamic queue limits

EPD and CLP marking

•

128K ingress and egress flows

•

Strict Priority, Min, WRR

Rate-shaping (CBR, VBR)

Up to 64K flows may participate in Flow Priority Queue grouping where four

egress flows are scheduled within the group according to pre-assigned

weight

•

Payload memory requirements

•

Up to 2 million cells of storage

RLDRAM-II

•

4K pipes

Supports DiffServ

•

Strict Priority, Min, Weight, Max, XON/XOFF

512 subports

•

Min, Max, WRR, XON/XOFF

64 subport groups

•

Max bandwidth capping, XON/XOFF

nPsoft Development Environment

nPsoft Services

nPsoft Application Libraries

Reference source code for WAN and LAN protocols

nPsoft Toolkit

•

Simplified multiprocessor programming model

Powerful NPU and CPU software and messaging framework

nPkernel NPU operating system

•

Code development tools

Open APIs, tracking standards

Graphical simulators

Customizable debugger

Performance analysis

nP Workbench-3740

•

Software development system

Modular interfaces

Product Availability

•

Part Number: nP3740PBx-yyy(x: C – Commercial, I – Industrial, yyy: 700 – 700 MHz)

Availability: Now

•

Commercial and Industrial Temperature Rating

For technical support, please call 1-800-840-6055 or 858-535-6517, or email support@amcc.com.

AMCC reserves the right to make changes to its products, its datasheets, or related documentation, without notice and warrants its products solely pursuant to its terms and

conditions of sale, only to substantially comply with the latest available datasheet. Please consult AMCC’s Term and Conditions of Sale for its warranties and other terms, conditions

and limitations. AMCC may discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify,

before placing orders, that the information is current. AMCC does not assume any liability arising out of the application or use of any product or circuit described herein, neither does

it convey any license under its patent rights nor the rights of others. AMCC reserves the right to ship devices of higher grade in place of those of lower grade.

AMCC SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR

OTHER CRITICAL APPLICATIONS.

AMCC is a registered trademark of Applied Micro Circuits Corporation. PowerPC and the PowerPC logo are registered trademarks of IBM Corporation. All other trademarks are the

NP3740PBx_PB_v1.1_20060428

215 Moffett Park Drive

Sunnyvale, CA 94089

P 858 450 9333

F 858 450 9885

www.amcc.com

NP3740PBI-700 [AMCC]

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