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Part: DSAR-L100-309
Category:
Communication
-> DSL (Digital Subscriber Line)
-> ADSL
Description: Adsl/pci Modem Device Set
Company: Conexant Systems, Inc.
Datasheet: Download DSAR-L100-309 datasheet File size : 53 kB
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Datasheet text preview:
personal
computing
products
AccessRunner ®
PC l ADSL Modem Device Set
Full-Rate and G.lite ADSL Modem Delivers End-to-End Internet Connectivity
Conexant's AccessRunner low-power PCI-based ADSL chipset and PC driver solution is optimized to address the growing demand for high-speed Internet access. AccessRunner is a controllerless solution that is fully compliant with both the full-rate ADSL (T1.413 Issue 2 and G.dmt) and the `splitterless' G.lite (G.992.2) standards. Compliance ensures that products based on the AccessRunner solution can address the existing installed base and continued deployment of ADSL lines.
Conexant's AccessRunner modem is an "always on" high-speed broadband connection to the Internet. Using existing twisted pair telephone lines, ADSL technology provides data rates over 100 times the speed of a traditional analog modem, without an interruption in telephone service. With up to 8 Mbps downstream and 1 Mbps upstream data transfer rates, ADSL is the ideal solution for high-bandwidth applications such as access to a corporate network, Internet access, and video delivery.
Distinguishing Features
· T1.413 lssue 2, G.992.1 (G.dmt), and G.992.2 (G.lite) compliant · PCI ADSL chipset and drivers · Full-rate ADSL and G.lite operation · Optimized controllerless ADSL architecture · Interoperable with key central-site equipment · "Always on" connection to the Internet · Over 100 times faster than analog modems · Operates on existing standard telephone lines · No interruption in telephone service
Conexant's ADSL chipsets support the full range of ADSL standards based on industry standard discrete multitone (DMT) line-code technology. The versatile PCI ADSL client-side chipset is a cost-effective solution optimized for today's PC market.
personal
computing
products
AccessRunner
PC l ADSL Modem Device Set
PCI Controller
The P46 PCI controller is a bridge between the CX11627 DMT datapump and the PCI bus. It provides the control, interface, and data manipulation for the datapump, analog front end (AFE), and line driver. It is compliant with the PCI 2.2 specification and supports power management.
Analog Front End
The CX20431 (AFE) is designed for use in full-rate and G.lite ADSL modems. The receive path filters out unwanted echo and boosts the wanted signal before performing an A/D conversion. The transmit path converts digital data to analog signals and performs a smoothing operation before presenting the signals to the line driver.
DMT Datapump
The CX11627 DMT datapump is a T1.413 Issue 2, G.992.1, and G.992.2 compliant digital signal processor (DSP). The device performs DMT modulation/demodulation, ATM transmission convergence (TC), forward error correction (FEC) encoding/decoding, data synchronization, and data interleaving. Control and initialization of the datapump is done by the host PC as part of the software drivers.
Line Driver
The integrated CX20441 line driver is more cost-effective and power-sensitive than a discrete solution, and is optimized for full-rate and G.lite ADSL modems. It has high bandwidth, low noise, and superior linearity.
Figure 1. ADSL PCI modem device set
Figure 2. AccessRunner PCI ADSL modem device set
Portfolio of ADSL CPE
In addition to the products described in this product brief, Conexant offers several variations of its ADSL technology in the form of:
PCI ADSL chipsets PCI ADSL/V.92 chipsets
Optimized Controllerless ADSL Solution
The PCI ADSL device set is shown together with the PC drivers in Figure 1. It consists of a PCI controller, a DMT datapump, an AFE, and a line driver. Using only a fraction of the PC's host processor, this controllerless solution eliminates the need for costly microcontrollers and external memory required in other ADSL modems.
PCI ADSL/V.92/HomePNA/LAN chipsets USB ADSL chipsets USB ADSL/V.92 chipsets Ethernet/USB ADSL bridge chipsets Ethernet/USB ADSL router chipsets HomePNA ADSL router chipsets Multiport ADSL router chipsets
In addition, Conexant's `softSAR' technology provides the ATM segmentation and reassembly (SAR) function as part of the PC driver. However, in order not to unnecessarily burden the host PC and the PCI bus, the idle cell insertion and deletion that takes place when no information is being transferred across the ADSL link is performed as part of the chipset.
The unique advantage of this broad portfolio of CPE solutions is the leveraging of a common ADSL core engine (DMT processor, AFE, and Line Driver) across all of the solutions. This ensures widespread interoperability and strong performance among all of the CPE offerings.
Without the need for an external microcontroller or memory, Conexant's AccessRunner is the most cost-effective, optimized solution for the PC environment.
Additionally, the driver applications such as Installation Wizard, Control Panel, and Taskbar application are also leveraged among all of the USB and PCI solutions. Likewise, the Ethernet, HomePNA, and Multiport bridge/router solutions, share a common web server for configuration. This synergy allows an OEM to have a common look and feel for all of its CPE solutions across the various form factors. Furthermore, each of the driver applications and web server are completely OEM customizable, including multi-language support, enabling easy branding and promotion of a portfolio of CPE solutions.
ADSL Drivers
Conexant's PC drivers are designed for use with Windows® 98, , Windows® 20 0 0, Windows® ME, Windows® XP and fully leverage Microsoft's built-in features for the support of ADSL adapter cards. In addition to softSAR functionality, the drivers fully support the recognized standards for PPP over ATM (RFC2364), PPP over Ethernet (RFC2516), Ethernet bridging/routing over ATM (RFC1483), and classical IP over ATM (RFC1577). A control panel applet is provided for real-time diagnostic information, and hooks are included to allow automatic configuration of the ADSL modem and the drivers.
features
and
specifications
Product Features
· ADSL Compliance Compliant with ADSL standards · Full-rate ANSI T1.413 Issue 2 and ITU G.dmt (G.992.1) · Splitterless ITU G.lite (G.992.2) DMT modulation and demodulation Rate adaptive · Max downstream 8 Mbps · Max upstream 1 Mbps Supports splitterless full rate operation Time detection for low power mode Dying Gasp Interoperable with all major DSLAMs · ATM Protocols WAN mode support: PPP over ATM (RFC2364) and PPP over Ethernet (RFC2516) LAN mode support: bridged/routed Ethernet over ATM (RFC1483) and classical IP over ATM (RFC1577) ATM Forum UNI 3.1/4.0 PVC ATM SAR (segmentation and reassembly) ATM AAL5 OAM F4/F5 · PCI Interface Compliant with PCI specification 2.2 Supports power management · Operating System Support Windows 98 Windows 98 SE Windows 2000 Windows ME Windows XP Windows 95 Windows NT 4.0 Linux 2.2.16 and 2.4.2 · Driver Applications Windows Control Panel Installation Wizard Task Bar Application All applications are customizable All applications support multiple languages
AccessRunner is a registered trademark of Conexant Systems, Inc.
www.conexant.com General Information: U.S. and Canada: (800) 854-8099 International: (949) 483-6996 Headquarters Newport Beach 4311 Jamboree Rd, P O. Box C . Newport Beach, CA 92660-3095 Order# 100371C 01-0668
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