ZETTACOM AND XILINX COLLABORATE ON REFERENCE DESIGN BOARD TO DEMONSTRATE 10G ETHERNET CONNECTIVITY

Atlanta, GA-July 3, 2002-ZettaCom, Inc., a designer and supplier of high-performance and configurable network communication IC solutions, and Xilinx, Inc. (NASDAQ: XLNX), today announced they have successfully completed comprehensive interoperability testing between ZettaCom's industry-leading ZSF Terabit Switch Fabric and Xilinx® Virtex® series using the industry-standard CSIX interface. The proven interoperability and the availability of the reference design board will help accelerate the development of terabit routers, switches and other optical networking equipment based on 10 Gigabit Ethernet and/or POS technology. The companies also announced that ZettaCom has joined the Xilinx Reference Design Alliance Program.

"The collaboration with ZettaCom underscores our commitment to build partnerships with ASSP vendors to deliver reference designs that help our customers accelerate their product time-to-market and gain competitive advantage," said Umesh Bhat, senior manager of the Partnership Program at Xilinx.

"ZettaCom is one of the few companies in the industry today shipping a terabit switch fabric," said Bennett Le, director of product marketing for ZettaCom. "This reference design with Xilinx will greatly facilitate and speed time-to-market for joint designs that use a Virtex series FPGA and our ZSF device."

The reference design provides designers of high-speed systems with an evaluation platform for testing the ZSF200 Terabit Switch Fabric. The Virtex series FPGA is used to implement a CSIX to Utopia3/SPI3 bridging function required to connect the ZSF200 switch fabric to a POS/ATM framer. Additionally, the reference design board can be used to transmit and receive patterns defined by the user within the Virtex series FPGA, including user set, algorithmically derived, or PRBS patterns. For more information on the reference design visit, www.xilinx.com/company/reference_design/zettacom.htm

Xilinx Reference Design Alliance Program
The Xilinx Reference Design Alliance Program builds partnerships with industry leading semiconductor and design companies to develop reference designs for accelerating our customer's product and system time-to-market. All reference design boards incorporate Xilinx devices and IP and are interoperable at the system level with other general and specialized semiconductor devices. The reference design boards are ideal for a wide variety of digital electronic systems, including networking, communications, video imaging, DSP, and emerging market applications. For complete program information, visit www.xilinx.com/company/reference_design.

About Xilinx
Xilinx, Inc. (NASDAQ: XLNX) is the worldwide leader of programmable logic solutions. Additional information about Xilinx is available at www.xilinx.com.

About ZettaCom
ZettaCom, one of the "Best of the Best" privately-held companies (Red Herring, 2001), and recently named a "Hot 100" company by UPSIDE (June 2002), is the leader in providing highly intelligent network silicon solutions, which provide a robust, scalable and QoS-aware hardware foundation used in next generation networking and optical communications equipment. Founded in 1999, ZettaCom is currently shipping the highly integrated ZSF200 Terabit Switch Fabric and ZTM200 Advanced Traffic Manager, delivering a complete silicon solution featuring the highest levels of performance, scalability, flexibility and integration in the industry to assist its partners in gaining early market entry. By partnering with network system switch vendors, ZettaCom will enable them to meet tomorrow's challenges and gain early market entry by delivering powerful high-speed, feature-rich solutions that provide the services required to build out the next generation telecommunications infrastructure. ZettaCom is headquartered in Santa Clara, Calif., and operates a sales & support office in Westford, Mass., outside of Boston.

The privately-held company has completed two rounds of funding from leading venture capital firms such as Venrock Associates, Norwest Venture Partners, Granite Global Ventures, Development Bank of Singapore, and J. & W. Seligman & Co. For more information about products offered by ZettaCom, please call 408.869.7000 or visit www.zettacom.com.

-30-

#02104