Centillium Communications, Inc.

Todd DeBonis
Centillium Communications, Inc.
(510) 771-3450
[email protected]

CENTILLIUM COMMUNICATIONS TO EXTEND REACH AND RATE OF DSL WITH INNOVATIVE EXTREMEDSL™ TECHNOLOGY

Company to Take Japan’s DSL Industry to Next Frontier

FREMONT, Calif., May 22, 2002 - Centillium Communications, Inc. (Nasdaq: CTLM), innovator of broadband communications technology, today announced the availability of its eXtremeDSL technology to Japan. Centillium’s eXtremeDSL technology comprises a family of revolutionary, standards-based features, which optimize the use of the ADSL spectrum to make significant improvements in extending the reach of ADSL service and increasing the downstream bit rates.

Centillium’s first release of eXtremeDSL technology includes two features. The eXtremeReach™ feature allows service providers to increase the ADSL coverage area per central office. With this feature, the total addressable ADSL market will increase, resulting in greater revenue opportunities for equipment vendors and service providers. This breakthrough technology allows service providers to offer broadband services and applications to subscribers in rural areas that, until today, were too far from central offices to receive service.

The eXtremeRate™ feature offers downstream rates exceeding 10 Mbps. This performance enables providers to offer bundled services based on different data rates.

The eXtremeDSL technology is specifically adapted to the unique metallic loop conditions of the networks they are deployed in, including cable types and the crosstalk noise environment. The increase in the downstream reach and data rate is achieved while protecting the valuable upstream data rate. eXtremeDSL technology for Japan operates based on the ADSL G.dmt Annex C.

“The next frontier for the ADSL market is to use broadband access to offer a variety of new and exciting applications and services,” said Dori Braun, vice president of marketing, Access Business Unit for Centillium Communications. “It is imperative to offer ADSL accessibility to the masses, which can be accomplished by extending the reach of DSL while ensuring adequate downstream and upstream bandwidth. This capability bundled with Centillium’s SecureDSL™ technology is the cornerstone of our strategy.”

About Centillium Communications
Centillium Communications, Inc. combines technical innovation and customer commitment to make broadband communications – in business and at home – a practical reality. The Company designs and markets communications chipsets for Digital Subscriber Line (DSL) central office and customer premises equipment and for carrier- and enterprise-class Voice over Packet (VoP) gateways and switches. The Centillium Communications headquarters are located at 47211 Lakeview Blvd., Fremont, CA 94538. Additional information is available at www.centillium.com.

Forward Looking Statements
Except for historical information contained in this press release, the foregoing contains forward-looking statements that involve risks and uncertainties. Actual results may differ materially from those indicated by such forward-looking statements based on a variety of risks and uncertainties, including the risks and uncertainties relating to actual quantities and timing of any orders received under any contract and the successful development and market acceptance of Centillium's new products. The company assumes no obligation to update these forward-looking statements to reflect events or circumstances after the date hereof. Information about potential factors that could affect Centillium's financial results is included in Centillium's most recent Annual Report on Form 10-K, which can be viewed at the Securities and Exchange Commission’s website at www.sec.gov.

Centillium Communications and the Centillium logo are trademarks of Centillium Communications.