April 04, 2002

Xelerated Demonstrates Interoperability at 10 Gbps with PMC-Sierra

STOCKHOLM, SWEDEN - April 4, 2002. Xelerated announced today that they have demonstrated interoperability between its XeleratorTM family of programmable network processors and PMC-Sierra's (NASDAQ: PMCS) XENONTM framer (PM 5390 S/UNI-9953) on a 10 Gbps evaluation board.

The evaluation board both verifies interoperability with PMC-Sierra's XENONTM devices and other surrounding circuitry as well as validates Xelerated's programmable-pipelined architecture, the PISCTM (packet instruction set computer).

"We are very pleased to demonstrate interoperability with PMC-Sierra. Together with their XENONTM family of 10 Gbps physical layer devices, we can offer our customers attractive high density line-card configurations with OC-192, OC-192c, 10x1GigE, 10GigE or even higher port densities using our packet processor," said Thomas Eklund, Director of Business Development, Xelerated.

Complete interoperability between Xelerated's family of programmable network processors and PMC-Sierra's XENON family of devices is achieved through the support of the POS-PHY Level 4 (PL4) interface. Standardized by the Optical Internetworking Forum (OIF) as SPI-4 Phase 2, PL4 offers a low pin-count and low-power interface thus enabling significantly easier, less expensive integration for next-generation equipment designs.

"Our collaboration with Xelerated to achieve SPI-4 Phase 2 (PL4) interoperability is representative of PMC-Sierra's overall commitment to provide system engineers with cost-effective 10-Gigabit solutions to speed their time-to-market for Metro Area Network Applications," said Steve Perna, vice president and general manager, PMC-Sierra's Optical Networking Division.

"Demonstrating interoperability at high-speeds is a significant milestone that clearly shows Xelerated is on track and delivering on its promises," said Linley Gwennap, principal analyst of The Linley Group. "I expect Xelerated will be the first to deliver a network processor with enough performance for multiple 10 Gbps ports."

The evaluation board, running on a FPGA at 10 Gbps over SPI-4 Phase 2 (PL4) and interfacing with a system clock running at 50 Mhz, contains all the essential functionality of the soon-to-be-released XeleratorTM Packet Processor. The packet processor, which will be the industry's first 1-4x10 Gbps chip, implements 4 SPI-4 Phase 2 interfaces and has a system clock running up to 200 MHz. Both multi-protocol label switching (MPLS) and Internet protocol (IPv4 and IPv6) applications have been tested.

Xelerated's Network Processor Family

Xelerated's network processor family targets the high-performance metro, edge and core networking equipment running at 10-40 Gbps. Xelerated's products, available during 2002, will provide system vendors with a unique ability to differentiate themselves from their competitors through extensive application programmability without compromising wire-speed performance.

PMC-Sierra's 10-Gigabit Ethernet XENON Family of Devices

PMC-Sierra's XENON family of devices is one of the industry's broadest set of 10- Gigabit Physical Layer and Framer/10-Gigabit MAC solutions. The XENON family includes the PM5390 S/UNI-9953 (10-GE LAN/WAN PHY and OC-192 ATM/POS concatenated PL4 framer), PM5392 S/UNI-9953-POS (OC-192 POS/ATM concatenated PL4 framer), PM3392 S/UNI-1x10 GE (10-GE LAN PHY with PL4), and PM3388 S/UNI-10xGE (10 port GE PHY with PL4) devices. The XENON family is based on the POS-PHY Level 4 (http://www.pmc-sierra.com/posphylevel4) interface, pioneered by the SATURN(r) Development Group, standardized by both the Optical Internetworking Forum (SPI-4 Phase 2) and the ATM Forum (FBATM 4). Currently, the XENON family supports 10-Gigabit Ethernet LAN and WAN, OC-192c POS/ATM, high-density Gigabit Ethernet and Quad OC-48c POS/ATM. PMC-Sierra is leading the industry with extensive interoperability testing with other industry 10-Gigabit interfaces and PL4 system components (http://www.pmc-sierra.com/10ge/).

About Xelerated

Xelerated (formerly Xelerated Packet Devices) is a fabless semiconductor company founded in August 2000 developing network processors and associated software for manufacturers of high-capacity networking equipment. Xelerated's flexible product offering allows system vendors to build line-card solutions with anything from 1 to 4 ports of 10 Gbps. This immediately positions Xelerated for the 10 Gbps market, as well as for the 40 Gbps market. As one of the leading developers of network-processor solutions Xelerated bring together leading component companies in a joint effort to create a "one-stop-shop" for system vendors with superior components for core, edge and metro system solutions. Additional information about the company and its products is available at www.xelerated.com

Xelerated, the Xelerated logo, XeleratorTM and PISCTM are trademarks of Xelerated.

Press Contacts:

Thomas Eklund, Director of Business Development, Xelerated
Phone: +46 8 506 257 53,
Mobile: +46 733 279 789
E-mail: thomas.eklund@xelerated.com

Susan Kirk, Public Relations Programs Leader, PMC-Sierra
Phone: +1 604 415 6065
E-mail: susan_kirk@pmc-sierra.com