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RS8235

Endstation ServiceSAR Controller

Conexant Systems 

RS8235/8251EVM Features

Benefits

Hardware interface fully compliant with PCI

Provides an easy, high-performance hardware

interface to other off-the-shelf PCI products, such

as Ethernet cards or multimedia accelerators.

Hardware reference design

Full-featured RS8235/8251EVM reference design

provided as a complete ATM UNI which implements

the full functionality of the RS8235 Endstation SAR.

Software reference design

Greatly speeds development of new applications.

Allows the user to develop and port proprietary

software applications atop the software driver

provided with the RS8235/8251EVM.

Traffic generation and checking capability

Assists in product debug state as an ATM load

generator and checker.

Optical OC-3 interface

Enables high-performance testing.

RS8235HPI Features

Software reference design

Modular software design

Dynamic rate control per virtual channel

SAR initialization and VCC control

Well-defined, robust RS8235HPI interface

Well-documented C source code

RS8235HPI Macro Layer software

Benefits

Shortens development time of

customer system-specific ATM applications.

Allows users to utilize only those functions they

want and to incorporate those functions into their

own applications.

Users can establish ABR, CBR, UBR or VBR

connections at VCC setup on each of over

32,000 channels.

Provides detailed examples for control and

management of the RS8235. Significantly

shortens design time.

Enables users to easily port their application to

the RS8235/8251EVM.

Gives users a clear description of how the software

and hardware function.

Offers a layer of abstraction for ease-of-use of

the RS8235HPI primitives. Reference device driver

for VxWorks.

What is ATM?

Asynchronous Transfer Mode (ATM) has emerged as the

primary networking technology for next-generation, multi-

service communication networks. ATM-enabled services

benefit the Internet as well as emerging applications in

science, telemedicine and distance learning. Just as the

Internet revolutionized worldwide communications,

ATM brings new meaning to high-speed networking.

ATM, which uses a fixed-size packet, or cell, is a transport

protocol capable of providing a homogeneous network

for all traffic types, whether the application is to carry

conventional telephony, video entertainment, or data

traffic over LANs, MANs or WANs.

The ITU-T and ANSI selected ATM for Broadband-ISDN.

SONET/SDH, as specified by the ITU, is intended as the

primary transport mechanism for ATM cells in WAN

applications. ATM also plays a key role in next-generation

consumer applications for high-speed Internet access and

wireless access. The ADSL Forum and the Universal ADSL

Working Group chose ATM as the network layer protocol

for G.lite and G.DMT ADSL.

ATM physical-layer (ATM-PHY) IC devices adapt ATM cells

to and from transmission rates ranging from 1.544 Mbps

to 2.4 Gbps via a standard system interface called UTOPIA.

ATM-PHY devices perform ATM cell functions (transmission

convergence) such as cell scrambling/descrambling, cell

delineation (HEC), cell header processing, and cell-rate

decoupling as well as rate-specific functions for frame genera-

tion/recovery frame adaptation and clock/data recovery.

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