AMCC Demonstrates ATCA-Based, Multiservice Evaluation Platform at Supercomm 2005; Enables OEMs to Drastically Reduce Costs, Risk and Time-to-Market When Developing Next-Generation Networking Solutions.

SAN DIEGO -- AMCC Leverages Proven Design Expertise by Integrating Its End-to-End Communication Devices into a Standards-Based ATCA Chassis and Providing a Total System Solution for OEMs

Applied Micro Circuits Corporation (AMCC) (NASDAQ:AMCC) today announced the company's first ATCA standards-based Multiservice Evaluation platform, enabling customers to accelerate their development of packet and cell-based switching chassis. This platform provides one-stop shopping for OEMs by delivering a complete, standards-based system solution including a Control Processor, Network Processor, Packet/Cell-based Switch, Framers, and SERDES functions for Multiservice switch/router, Wireline Access (DSLAM, CMTS, Media Gateway), Wireless Access (RNC, GGSN, SGSN), Metro Aggregation (MSPP), and Data Center (WLAN, L4-7) applications.

AMCC's ATCA Multiservice Evaluation platform provides OEMs with a low-risk factor when developing next-generation networking solutions. It enables "plug-and-play" of standards-based hardware for rapid application software development and reduced time to market.

"AMCC's ATCA Platform delivers a highly integrated, standards-based and easy-to-use solution for accelerating development cycles," said Mark Hunsicker, vice president of marketing for AMCC's Communications Group. "This solution replaces proprietary chassis and evaluation boards featuring individual products from AMCC and other vendors. With AMCC's vast expertise in the communications market, we have the unique ability to integrate multiple devices into a standards-based ATCA chassis and deliver nearly all of the key components of this platform, which reduces development costs, time-to-market and risk to customers."

The nP3710 network processor-based ATCA line card and the PRS 80G-based ATCA packet/cell switch card represent the key elements of the ATCA evaluation platform. The nP3710 network processor is a 5-Gbps integrated network processor and traffic manager that implements the complete core functionality of a high-performance networking system. The PRS 80G switch chip, along with the PRS C48X and PRS C192X switch fabric interface chips, are designed to address the needs of a wide range of high-bandwidth demanding applications in Metro Ethernet, WAN multiservice, wireless infrastructure, and enterprise equipment. The nP3710 ATCA Line Card includes support for Control Plane Processing functions, via an on-board PowerPC 440GP processor. The PowerPC 440GP embedded processor offers exceptional performance, design flexibility, and robust features geared to demanding networking, storage, and other embedded applications. AMCC's EVROS and TIGRIS devices are also critical components of the platform, providing high-density channelization, data termination and mapping capabilities.

The modularity of the main nP3710 ATCA Line Card allows for additional PMC (PCI Mezzanine Cards) to be developed to support other framer and SERDES devices, such as AMCC's OHIO path terminating framing devices. Various versions of AMCC's PowerPC-based PMCs can also be developed to support different control plane processing functions and requirements. AMCC is also integrating production-quality application software running on the nP3710, including ATM, MLPPP, IMA and MLFR.

AMCC at Supercomm 2005

AMCC will be demonstrating the capabilities of its ATCA Platform at Supercomm, June 7 - 9, 2005, at McCormick Place in Chicago. For more information about this demonstration, please visit AMCC at the PICMG Technology Showcase in Booth # 43085A. AMCC will also be part of the In-Stat ATCA Forum on June 8 in Room S-504, where AMCC's Gilles Garcia is a panelist for the "AdvancedTCA in Europe" session (10:40 AM - 12:00 PM).

Availability

AMCC's ATCA-based Multiservice Switch Evaluation Platform will begin sampling in Q4 2005. For additional technical information, visit the following: http://www.amcc.com/ATCA/.

About AMCC

AMCC provides the essential building blocks for the processing, moving and storing of information worldwide. The company blends systems and software expertise with high-performance, high-bandwidth silicon integration to deliver silicon, hardware and software solutions for global wide area networks (WAN), embedded applications such as PowerPC and programmable SOC architectures, storage area networks (SAN), and high-growth storage markets such as Serial ATA (SATA) RAID. AMCC's corporate headquarters are located in San Diego, California. Sales and engineering offices are located throughout the world. For further information regarding AMCC, please visit our web site at http://www.amcc.com.

Forward-Looking Statements

The statements contained in this press release that are not purely historical are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Such forward-looking statements, including statements relating to the markets, growth of markets and products, including the risk that the markets would not grow at the rates forecasted, and the demand for products would not materialize, risks relating to general economic conditions, as well as the risks and uncertainties set forth in the Company's filings with the Securities and Exchange Commission. As a result of these risks and uncertainties, actual results may differ materially from these forward-looking statements. The forward-looking statements contained in this news release are made as of the date hereof and AMCC does not assume any obligation to update any forward-looking statement.

AMCC is a registered trademark of Applied Micro Circuits Corporation.