AMCC Unveils High-Speed, Low Cost PowerPC Processor for Networking Applications; 440GR Processor Offers Increased Speed, Memory Performance and Dual Fast Ethernet.

SAN FRANCISCO -- At the Microprocessor Summit, Applied Micro Circuits Corp. (AMCC) (NASDAQ:AMCC) will today introduce a new high-speed PowerPC(R) processor targeted at networking and storage control plane applications. Based on the PowerPC 440 superscalar core, the low cost AMCC 440GR offers increased processor speed, memory performance and integrated dual Fast Ethernets. Ideal for line card, system control and multi-radio devices, the AMCC 440GR operates at a clock frequency of up to 667 MHz.

The AMCC 440GR requires one-third less power than any other member of the 440 family, making it ideal for low power applications. The AMCC 440GR's dual Fast Ethernet controllers function at full or half duplex at 10/100 Mbps. They are configurable as one MII, two RMII, or two SMII ports with a packet reject interface. Along with a 65 percent increase in performance over AMCC's 405GPr, the AMCC 440GR also supports double data rate memory (DDR266) with a peak bandwidth of 1.1 Gbps. Optional ECC support is also provided. In addition, the 440GR supports a 32-bit PCI revision 2.2 compliant interface with multiple read pre-fetch and write post buffers and the ability to boot the processor from PCI bus memory. The 440GR's external bus controller provides support for up to 6 ROM, EPROM, SRAM, Flash or slave peripheral I/O devices. The 440GR also incorporates a DMA controller with four independent channels supporting memory-to-memory, peripheral-to-memory and memory-to-peripheral block transfers.

Other on-chip peripherals on the AMCC 440GR include two IIC controllers, one bootstrap controller (BSC) and one SPI Serial Communications Port (SCP), up to 10 external interrupts, general purpose timers, 53 GPIO pins and four UARTs to support various functions in user applications.

"We are very excited about the addition of the AMCC 440GR to our current portfolio of feature-rich processors. The AMCC 440GR is a great choice for new storage and networking applications as well as an excellent growth path for existing 405xx users requiring increased processor speed, memory performance, and Fast Ethernet at a low cost," commented Sam Fuller, AMCC's vice president of marketing, Embedded Products.

AMCC's PowerPC processors are supported by AMCC and more than 100 third-party vendors who provide a full range of software, boards and tools necessary for manufacturers to develop products quickly and efficiently. The AMCC 440GR will be shipping in the second quarter of 2005. For additional technical information, visit http://www.amcc.com/BestInClass/PowerPC440GR. For a photo of this device, visit http://www.amcc.com/BestInClass/PowerPC440GRPhoto.

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 products and markets discussed in this press release are subject to a number of risks and uncertainties, including the risk that the products would not be successfully or timely developed, completed or manufactured or achieve market acceptance or that the markets for these products will not materialize or grow as anticipated, risks relating to general economic conditions, as well as the risks and uncertainties set forth in the Company's Annual Report on Form 10-K for the year ended March 31, 2004, and in other filings of the Company 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.

Product photos, datasheets and application notes are available upon request. AMCC is a registered trademark of Applied Micro Circuits Corporation.

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