Praesum Communications, an emerging developer of new generation networking and telecommunications equipment, has released the first Rapid IO Core Technology to Xilinx, Inc. The core addresses the demand for high-performance networking and equipment with a 64-bit high performance implementation of Rapid IO capable of scaling to OC-192 line rates or 10 gigabit per second. The core is fully compliant with Revision 1.1 of the RapidIO Physical Layer 8/16 LP-LVDS specification, and supports a flexible buffer management scheme suitable for both end-station and switch-port applications.

The Praesum/Xilinx Rapid IO core is the world’s first product shipped to be compliant with the recently released RapidIO Interconnect Specification, an open standard designed to speed and improve communications among chips or boards within a system. The new specification defines a switch fabric-based control plane interconnect that offers significantly greater bandwidth, more scalability and higher reliability than busbased control plane interconnects used today yet is compatible with existing architectures.

The core was developed in cooperation with Xilinx Inc. Praesum’s exclusive licensee of RapidIO IP technology in the field programmable gate array (FPGA) market. FPGAs have become critical components in communications equipment because of their flexibility in bridging emerging interface standards. Xilinx invented the field programmable gate array (FPGA) and fulfills more than half of the world demand for these devices today.

RapidIO provides transmission rates hundreds of times faster than current interconnection architectures, interoperates with the widely used PCI bus and is software transparent. The specification defines a switch fabric architecture and is backed by major industry vendors including Cisco Systems, EMC, Ericsson, Lucent Technologies, Motorola and Nortel Networks, among others.

"The RapidIO technology is an open standard specification that provides unparalleled data integrity, manages legacy software issues and improves scalability and performance. It is compatible with PCI and PCI-X yet offers a high-performance interconnect technology for next generation embedded, communications and networking systems." said Sam Fuller, RapidIO steering committee chair.

The RapidIO core is the first member of a family of RapidIO intellectual property and semiconductor products to be delivered by Praesum Communications this year. Praesum will also leverage this technology in system level products that will be deployed in 2002.

About Praesum

Praesum Communications develops and deploys smart switching technologies in the form of IP cores, boards, and system level products. We believe that the addition of more intelligence to switching products is the key to managing network resources - bandwidth, applications, users, and business relationships that justified the network in the first place. Praesum focuses on applying business policies to high bandwidth networks. Praesum was founded in January 2000 and has its headquarters in Petaluma, Calif. For more information, visit the Praesum web site at

Editorial Contact:
Nancy Griffin
Praesum Communications, Inc.
(707) 781-9753

Product Marketing Contact:
Kent Dahlgren
Praesum Communications, Inc.
(707) 781-9753