PMC-Sierra Introduces Industry’s First 10G EPON Reference Designs for FTTH Deployments

PAS8001 10G OLT and PAS9001 10G ONU Deliver Complete 10Gbit/s EPON Reference Designs Enabling System Vendors and Carriers to Offer Next Generation FTTH Solutions

New Delhi, April 23, 2008 – PMC-Sierra, Inc. (Nasdaq:PMCS) today announced the availability of complete reference designs for 10Gbit/s IEEE 802.3av EPON Optical Line Terminals (OLT) and Optical Network Units (ONU). The PAS8001 reference design for 10G OLTs and the PAS9001 reference design for 10G ONUs integrate all the functionality required from an OLT and ONU running at 10Gbit/s, including third party commercial transceivers, and leverage PMC-Sierra’s market-leading EPON capabilities to improve system performance and reduce OEMs’ time to market.

The availability of 10Gbit/s EPON systems will enable carriers to further expand their Triple Play services, Fiber-To-The-Building (FTTB) solutions, and lay the foundation for future bandwidth-demanding applications. In addition, carriers will be able to reduce capital and operating expenses by unifying their FTTH and FTTB infrastructures.

“PMC-Sierra’s 10G EPON development platform enables our customers to be the first to offer carriers 10G solutions that are fully interoperable with legacy PON equipment, and a cost-effective, standard upgrade path for their next generation access network infrastructure,” said Victor Vaisleib, vice president and general manager of PMC-Sierra’s FTTH business unit.

The PAS8001 and PAS9001 deliver 10Gbit/s performance, pre-standard (draft 1.1) IEEE 802.3av compliance, 1G/10G co-existence with auto-detect, standard encryption, high performance backward-compatible Dynamic Bandwidth Allocation (DBA) and commercially viable transceivers developed by a leading transceiver vendor partner. PMC-Sierra’s 10G solution can operate in a split ratio of up to 128 ONUs per OLT. As the next generation of PMC-Sierra’s market leading 1G EPON devices, these solutions fully coexist with more than six million EPON ONUs deployed worldwide that are based on PMC-Sierra’s devices.

Availability and Customer Support

The PAS8001 development kit for 10G OLTs and PAS9001 development kit for 10G ONUs, both FPGA-based, are available now for purchase orders. For more information, contact PMC-Sierra at sales {at} pmc-sierra(.)com.

About PMC-Sierra’s FTTH Family of Products

PMC-Sierra is the only supplier to support both EPON (IEEE 802.3ah Ethernet in the First Mile) and GPON (ITU-T G.984) standards. The Company’s gigabit PON products are based on the robust GigaPASS™ FTTH Architecture that achieves sustained gigabit and greater data rates while providing a powerful 32-bit programmable processing engine executing the real-time operating system, middleware, and application-specific firmware required for high performance FTTH network access functions. PMC-Sierra system-on-a-chip solutions provide end-to-end gigabit per second bandwidth solutions linking central office equipment and customer premise equipment. OLT (optical line terminal) devices connect the central office to the PON network and ONU (optical network unit) or ONT (optical network terminal) devices connect customer premises to the PON network. For

more information, visit www.pmc-sierra.com/ftth-pon.

About PMC-Sierra

PMC-SierraTM is a leading provider of broadband communications and storage semiconductors for metro, access, fiber to the home, wireless infrastructure, storage, laser printers, and fiber access gateway equipment. PMC-Sierra offers worldwide technical and sales support, including a network of offices throughout North America, Europe, Israel and Asia. The company is publicly traded on the NASDAQ Stock Market under the PMCS symbol. For more information, visit www.pmc-sierra.com.

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Attachments:

Figure 1: Next Generation 10G PON Technology Co-Exists with Legacy 1G Technology

For figures visit: http://www.pmc-sierra.com/news_room/pdf/10G_figure.pdf

For photos visit: http://www.pmc-sierra.com/news_room/images/OLT.jpg

For photos visit: http://www.pmc-sierra.com/news_room/images/ONU.jpg

Resources to Extend Your Product Knowledge and Understanding

PMC-Sierra FTTH Products www.pmc-sierra.com/ftth-pon

PMC-Sierra New Products www.pmc-sierra.com/products/newProducts.html

PMC-Sierra White Papers www.pmc-sierra.com/whitepaper

© Copyright PMC-Sierra, Inc. 2008. All rights reserved. PMC is a registered trademark of PMC-Sierra, Inc. in the United States and other countries. PMC-SIERRA, PMCS, GigaPASS and “Enabling connectivity. Empowering people.” are trademarks of PMC-Sierra, Inc. Other product and company names mentioned herein may be trademarks of their respective owners.