PMC-Sierra Adds Three New 64-Bit MIPS-Based Processors to RM7000 Family

6/18/2003 - PMC-Sierra(TM), Inc. (Nasdaq: PMCS - News) introduced the RM7900, RM7965 and RM7935 MIPS-based(TM) processors for networked laser printers, storage systems, personal video recorders, high-definition televisions, set-top boxes, routers and switches. The RM7900 processors integrate PMC-Sierra's proven high-end RM9000 family CPU core, the E9000, to bring optimized performance efficiencies realized in networking to printer and advanced consumer applications. Seamless, low cost scalability is achieved by utilizing the industry compatible and enhanced 64-bit or 32-bit SysAD bus which interfaces to a variety of memory, system controllers and ASICs. The RM7900 products represent the industry's first stand-alone MIPS(TM) architecture processors with speeds in excess of 600 MHz and on-chip hardware and software debugging instruction modules, ECC and EJTAG to offer improved data reliability.

"PMC-Sierra's RM7900 MIPS-based processors allow our printer, advanced consumer and networking customers to scale up while extending the life of their current systems and reducing costly redesigns," said Tom Riordan, vice president and general manager of PMC-Sierra's Microprocessor Products Division. "Our MIPS-based processors offer strong performance characteristics, a large variety of core configurations, competitive pricing, and robust development tool chain."

Embedded E9000 Core Raises Performance and Maintains Pipeline Efficiency
The RM7900 processor family is designed with the identical E9000 CPU core used in the RM9000 highly integrated multiprocessor family. The efficient, 7-stage, dual-issue pipeline CPU extends performance from 600 to 900 MHz. The E9000 core includes a dual-integer superscalar processor with a two-level cache hierarchy, MMU and sophisticated branch predictor. The branch predictor in the RM7900 family increases the accuracy of prediction to greater than 95 percent. The E9000 core contains 16 KB of instruction, 16 KB of data cache and 256 KB of Level 2 cache.

Enhanced 32- or 64-Bit SysAD Interface Provides Flexibility and Reduces Bottlenecks
The RM7900 family processors provide an enhanced high performance legacy MIPS architecture system interface called the System Address/Data Bus (SysAD). These processors support legacy designs with a seamless upgrade path for all RM7000 family and RM5200 family processors while maintaining compatibility with all existing and future companion chips and ASICs that utilize SysAD functionality as well as software. Both the 32-bit and 64-bit SysAD busses are flexible to allow easy interfacing to memory, system controllers or ASICs of varying frequencies. Therefore, either a low cost interface or a faster, high-performance interface can be designed to communicate with any RM7900 family processor allowing customers to extend the life span of their ASICs. This feature also provides seamless future support for subsequent generations of the RM7900 family processors with increased clock speeds.

On-Chip EJTAG and ECC Features Provide Ease of Debug and Data Reliability
The RM7900 family processors provide on-chip EJTAG debug modules to ensure smooth and easy debugging for both hardware and software by allowing single-step and state examination. The inclusion of a pipeline-rate branch instruction trace buffer facilitates debugging under operating conditions. As data rates increase and new designs become more complex, most customers require ECC support for next-generation designs. The RM7900 family of processors incorporates ECC on the Level 2 cache to provide increased data integrity by checking for errors and, when necessary, correcting the data as it is being transmitted or read.

Pricing, Availability and Customer Support
The RM7900, RM7965 and RM7935 MIPS-based processors utilize a 0.13 micron CMOS technology process. Samples will be available in the third quarter of 2003. The price for each processor is $119 in 1KU quantities, depending upon speed grade. For more information about pricing and availability, contact a PMC-Sierra sales representative at For comprehensive data sheets, development tools and resources visit

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

PMC-Sierra, PMC, PMCS and Thinking you can build on are trademarks of PMC-Sierra, Inc.

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