Expected next investor conference call information:
Conference Call Date: 10/30/2008
Conference Call Time: 5:00 PM
Conference Call URL: http://investor.amcc.com/

"AMCC'sEDC and 10GbE PHY technologyprovidedkey elements in achieving outstanding 10GBASE-LRM results in interoperability testing with Gennum's ROSA," said Gary Beauchamp, Senior Vice-President and General Manager, Optical Products, Gennum Corporation. "Gennum's GN3052 ROSAprovides Automatic Gain Control (AGC) functionality specifically designed for emerging applications utilizing EDC such as 10GBASE-LRM. Gennum's unique AGC architecture in the GN3052 provides the industry's best stressed sensitivity when used with leading EDC solutions."

AMCC's QT2025 is a fully integrated 10 Gbps transceiver with fully-adaptive EDC. It provides a high-performance interface between a MAC or a switch device and optical modules. The QT2025 is also capable of interfacing directly to SFP+ direct attach copper cabling and to 10GBASE-KR backplanes. AMCC's transport components allow system designers to offer the most cost-effective, high-performance, high-capacity delivery of enterprise traffic for 10-Gigabit Ethernet datacenter applications.

"The market for 10 Gbps connectivity technology is growing as more system designers seek to add higher performance links in datacenters," said Neal Neslusan, Director of Marketing at AMCC. "Gennum's ROSA-based solutions pack all of the features and performance that designers want for these applications. The demonstration of interoperability provides a clear indication that 10 Gbps datacom traffic can be successfully transmitted over greater distances to meet the highly demanding 10GBASE-LRM specification. It is yet another milestone for deploying 10G in the market."

The GN3052 is part of Gennum's ROSA product line that provides solutions for 10 Gbps applications including limiting and linear (AGC) ROSAscovering850nm to 1550nm. Gennum's ROSAs are based on its patented 10G receiver-on-a-chip platform (Rchip). The Rchip technology features the industry's first fully integrated 10G optical receiver with integrated photodiode TIA and passives, all on a stacked die.

About AMCC

AMCC provides leadership semiconductor solutions to process, transport, and store digital information for the world's wired and wireless networks. As a leading supplier of Power Architecture(R) based processors and with world-class expertise in SONET and Ethernet protocol processing, PHY technology, Storage processors and RAID controllers, our products are the foundation of the IP Communications Revolution. AMCC's 3ware(R) SAS and SATA RAID controllers deliver cost-effective, high-performance, high-capacity storage for enterprises and consumers worldwide in applications like disk-to-disk backup, near-line storage, network-attached storage (NAS), video, and high-performance computing. For further information regarding AMCC, please visit our website at http://www.amcc.com.

About Gennum

Gennum Corporation (TSX:GND) designs innovative semiconductor solutions and intellectual property (IP) cores for the world's most advanced consumer connectivity, enterprise, video broadcast and data communications products. Leveraging the company's proven optical, analog and mixed-signal products and IP, Gennum enables multimedia and data communications products to send and receive information without compromising the signal integrity. A recognized award-winner for advances in high definition (HD) broadcasting, Gennum is headquartered in Burlington, Canada, and has global design, research and development and sales offices in Canada, Germany, India, Japan, Korea, Mexico, Taiwan, the United States and the United Kingdom.

Forward Looking Statements

This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by words such as expects, anticipates, plans, believes, estimates, will or words of similar meaning. Such forward-looking statements, including statements relating to the products discussed in this press release, are subject to a number of risks and uncertainties, including the risk that the products may not be successfully or timely developed, completed or manufactured or achieve market acceptance, 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, and in the

Company's other SEC filings. 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 press release are made as of the date hereof and AMCC does not assume any obligation to update any forward-looking statement, whether as a result of new information, future developments or otherwise.

AMCC and 3ware are registered trademarks of APPLIED MICRO CIRCUITS CORPORATION. Power Architecture is a registered trademark licensed by Power.org. All other trademarks are property of their respective owners.

SOURCE: Applied Micro Circuits Corporation

AMCC Corporate Contact 
Applied Micro Circuits Corporation 
Gilles Garcia 
(o) 408-542-8687 
(c) 408-786-4317 
ggarcia@amcc.com 
or 
AMCC Media Contact 
The Bernard Group 
Tom Murphy 
(o) 408-370-6601 
(c) 831-402-4142 
tmurphy@bernardgoup.com 
or 
Gennum Corporate Contact 
Gennum Corporation 
Robin Vaitonis 
(o) (905) 632 2999 x2110 
vaitonis@gennum.com 
or 
Gennum Media Contact 
Orr & Company 
Diane Orr 
(o) 408-358-1617 
diane@orr-co.com