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Broadband Modems ADSL Modems
Single-Chip ADSL Endpoint
CX82320
Broadband Internet Connectivity
Conexant's broadband communications portfolio includes a comprehensive suite of semiconductor solutions that enable the digital home and information network. The Conexant AccessRunner CX82320 Single-Chip ADSL Endpoint is unique in the industry. The ADSL Endpoint provides all of the benefits of a transitional ADSL bridge/router, but at a significantly lower cost structure due to its advanced architecture and Bill of Material reductions. The CX82320 ADSL Endpoint is like no other ADSL product. As a simple modem for single user deployments it has all of the robust and user-friendly characteristics of a traditional ADSL bridge/router, including Web-based configuration and provisioning. Additionally, the ADSL Endpoint does not require a complex, host CPU burdening driver that is required by typical low cost single user modems such as traditional ADSL-USB or ADSL-PCI modems. Instead, the ADSL Endpoint processes all ADSL data completely, including all ATM Segmentation and Reassembly (SAR), PPPoE, and PPP etc. just as , a traditional ADSL bridge/router. The advantage of this type of architecture is that the ADSL Endpoint provides the robustness of an ADSL bridge/router by providing Ethernet frames to the PC and not relying on a host PC driver that burdens the PC CPU. The CX82320 ADSL Endpoint provides significant cost savings over the traditional ADSL bridge/router. By utilizing the PC to provide power, the ADSL Endpoint does not require an external power supply or any costly BOM to support a wall-mount power supply. Additionally, by storing the firmware for the ADSL Endpoint on the PC, costly flash memory is not required. Lastly, by consolidating PC interfaces, the ADSL -Endpoint does not require costly BOM to support an RJ-45 interface. The result is robustness and usage model of an ADSL bridge/router, but at the much lower cost structure of an ADSL -USB modem. Another unique application of the CX82320 ADSL Endpoint is as a basis from which to build a modular broadband gateway. Service providers wish to capture additional revenue from advanced hardware and services all the while continuing to provide extremely cost effective modems for mass-deployment. The answer to this challenge is the CX82320 ADSL Endpoint as the first step in a modular broadband gateway. Because the ADSL Endpoint provides the processing power and capability of an ADSL bridge/router, the ADSL Endpoint can be expanded with simple modular upgrades to support advanced deployments, such as multi user ADSL routers, ADSL Wireless routers, and/or ADSL VoIP terminals. The combination of low cost structure of ADSL Endpoint with the ability of modular expansion makes the ADSL Endpoint an ideal solution for service providers to mass-deploy and then upgrade on an as needed per user basis.
CX82320 ADSL Endpoint Distinguishing Features
* Complete ADSL on a chip * Full-rate ADSL and G.lite operation * Annex A and Annex B support * Integrated ADSL transceiver, AFE, and Line Driver * Low cost architecture * Integrated PPPoE/PPPoA/PPP * Ethernet frames passed to PC * Support all major PC operating systems * Web-based management * Plug-n-Play installation without opening the PC * First step in a modular broadband gateway * 208-pin fine pitch ball grid array (FPBGA)
Part Number CX82320 Description Single-Chip ADSL Endpoint
Broadband Modems ADSL Modems
CX82320 Endpoint Features
* * * * * * * Complete ADSL on a chip Low cost architecture No flash memory No power supply Lowest cost PC interface Full rate ADSL and G.lite operation Annex A and Annex B Support * * * * * * * * Robust architecture All protocols implemented on chip Ethernet frames passed to PC No complex PC driver required Familiar look and feel Web based management Support for all major PC operating systems Expandable to advanced modular gateway solutions
Typical Modem Firmware Architecture Comparisons
Web Server TCP/UDP IP PPP Half-bridge ADSL Line PPPoE/PPPoA ATM ADSL 802.ID bridge Ethernet USB No Complex Host Driver
PC
ADSL Endpoint
ADSL Endpoint Web Server TCP/UDP NAT IP ADSL Line PPP ATM ADSL Ethernet USB ADSL Line ADSL ATM USB
Requires full ADSL Driver with SAR, PPP etc. ,
PC
PC
ADSL Bridge Router
Traditional USB Modem
(c) 2002, Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant logo are trademarks of Conexant Systems, Inc. All other trademarks are owned by their respective owners. Although Conexant strives for accuracy in all its publications, this material may contain errors or omissions and is subject to change without notice.
THIS MATERIAL IS PROVIDED AS IS AND WITHOUT
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
www.conexant.com General Information: U.S. and Canada: (800) 854-8099 International: (949) 483-6996 Headquarters - Newport Beach 4311 Jamboree Rd, P Box C .O. Newport Beach, CA 92660-3095 Order# 102114B
Conexant shall not be liable for any
special, indirect, incidental or consequential damages as a result of its use.
03-0960

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