PMC-Sierra Rolls Out Integrated Multi-Rate PHY/Framers - Industry First

4/30/2003 - PMC-Sierra(TM), Inc. (Nasdaq: PMCS - News) introduced the PM5360 S/UNI® MULTI-48(TM) and PM5354 S/UNI® MULTI-2x12(TM) devices which offer a complete physical layer solution for simultaneously aggregating, transporting and terminating OC-3/STM-1, OC-12/STM-4, and OC-48/STM-16 Packet-over-SONET (POS) and ATM traffic on a single line card. The S/UNI MULTI devices are ideal for use in physical interfaces to connect network elements that demand rapid bandwidth expansion like xDSL access multiplexors (DSLAMs), cable modem termination systems (CMTSs), and wireless base-station controllers to edge routers and multi-service switches. A single multi-rate line card powered by one S/UNI MULTI-48 device, in conjunction with available multi-rate or pluggable optics modules, replaces up to three line card designs, addresses multiple applications and offers service providers unprecedented bandwidth scalability and network reliability.

Marconi Using PMC-Sierra's S/UNI MULTI-48 in Multi-service Switch Router
"Marconi is utilizing PMC-Sierra's S/UNI MULTI-48 in its industry-leading capabilities of the BXR-48000 to help reduce costs and speed delivery of value-added services for service provider customers," said Dave Blakeney, vice president, engineering, for Marconi's Broadband Switching and Routing group. "With the S/UNI MULTI-48, our BXR-48000 is better positioned to enable service providers to manage voice, video, and data traffic with greater efficiency, offering new differentiated IP services while continuing to leverage legacy revenue streams and reducing operating expenses."

Flexible, Scalable Solution Optimized for Cost-efficient Metro and Access Networks
When used with multi-rate optics, the S/UNI MULTI devices allow the deployment of a line card with field programmable line rates. As a result, simplified inventory management coupled with the ability to efficiently adapt ports to match bandwidth demand represents significant cost savings for service providers. The S/UNI MULTI devices can also be used in SONET/SDH automatic protection switching (APS) architectures which meet the stringent requirements of quality of service (QoS) and service level agreements (SLAs) demanded by enterprise and business users. Furthermore, both devices support channelization of each SONET/SDH tributary down to the STS-3c level which enable carriers to offer additional services with the same line card.

"The S/UNI MULTI-48 and S/UNI MULTI-2x12 devices add to PMC-Sierra's already extensive line of S/UNI products and illustrates our commitment to offering optimized solutions for addressing today's challenging metro access markets," said Steve Perna, vice president and general manager of PMC-Sierra's Service Provider Division. "Combining PMC-Sierra's proven technology with multi-rate capability in a highly integrated PHY/framer device offers system designers benefits which include minimizing design risk and effort as well as maximizing the reuse of hardware and software components."

High Density, Multi-rate, Standard-compliant Devices Simplify Design and Reduce Board Level Cost
The S/UNI MULTI-48 and S/UNI MULTI-2x12 maximize the ease of implementation and board space savings by combining multi-rate clock recovery and synthesis with the framing and mapping functions, replacing up to five discrete components. With the software effort now reaching more than half of the total system development cost, leveraging a single design with the S/UNI MULTI devices across several line cards becomes increasingly important to OEMs.

The S/UNI MULTI devices include PMC-Sierra's standard compliant POS-PHY Level 3 (PL3) interface for POS traffic and provide UTOPIA Level 3 (UL3) interface for ATM traffic giving system designers access to a broad range of Layer 2 and 3 functions. PMC-Sierra offers the industry's broadest PL3 family comprising a wide selection of line interfaces including OC-48, OC-12, OC-3, Gigabit Ethernet, DS3, E3, J2 as well as channelized ATM, POS and DS3. For more information about PMC-Sierra's PL3 family of devices and partner solutions, go to

Pricing, Availability and Customer Support
Samples of the PM5360 S/UNI MULTI-48 and PM5354 S/UNI MULTI-2x12 are available now and are priced at $378 and $228 in 1KU respectively. Both devices are pin-compatible, packaged in a 31 mm x 31 mm, 500 pin UBGA, rated for industrial temperature range operation (-40 to +85 degrees Celsius) and fabricated using low power, 0.18 micron CMOS process. A comprehensive support package including datasheets, software drivers, user manual, hardware reference designs, and device models is currently available. Please contact applications support at or visit for more information.

About PMC-Sierra
PMC-Sierra is a leading provider of high speed broadband communications and storage semiconductors and MIPS-based processors for Enterprise, Access, Metro Optical Transport, Storage Area Networking and Wireless network equipment. The company offers worldwide technical and sales support, including a network of offices throughout North America, Europe and Asia. PMC-Sierra is included in the S&P 500 Index which consists of 500 stocks chosen for market size, liquidity, and industry group representation. The company is publicly traded on the NASDAQ Stock Market under the PMCS symbol. For more information, visit

SUNI is a registered trademark of PMC-Sierra, Inc. PMC, PMC-Sierra, and Thinking you can build on are trademarks of PMC-Sierra, Inc.

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