Electronic Design

DOCSIS 2.0+ ICs Support Worldwide STBs, Broadband Data

A family of DOCSIS 2.0+/EuroDOCSIS 2.0+ cable modem ICs is designed for traditional broadcast and next-generation IP-based broadband video services. The CX2445X front-end modem chips from Conexant Systems Inc. are targeted at advanced cable set-top boxes (STBs) with personal video recording (PVR) capabilities, basic two-way digital STBs, and DOCSIS cable modems used in bi-directional networks. Key features include three demodulators with a downstream channel bonding capability, which significantly increases bandwidth capacity and enables cable operators to economically deliver video and interactive services to their subscriber base.

The front-end chips integrate four ARM9 network processors and the three in-band demodulators to provide operators with a powerful, programmable solution that supports a combination of two digital video streams and an additional industry-standard DOCSIS set-top gateway (DSG) channel for two-way communications. As an alternative, operators can configure their STBs with three bonded channels, which allows them to achieve downstream data rates of up to 120 Mbits/s and enables the delivery of bandwidth-intensive services such as high-definition streaming video. The ICs also support a wide range of connectivity and expansion options, providing system designers with a variety of ways to connect to back-end host processors, wireless devices, home networks, and other media devices.

AVAILABILITY

The CX2445X is sampling now with volume production scheduled for the third quarter of 2007.

PRICING

The device costs $17 each in production quantities.

FOR MORE INFORMATION

Visit www.conexant.com.

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