Paxonet introduces 10-Gigabit Ethernet transport device and OC-48 framer for metro area networks

July 30, 2001
July 30, 2001--To reduce complexity, design time and power requirements of networking equipment in metropolitan area networks (MANs), Paxonet Communications, Inc., announces products designed for 10-Gigabit Ethernet, OC-192c SONET, OC-48 SONET transport of data and IP applications.

To reduce complexity, design time and power requirements of networking equipment in metropolitan area networks (MANs), Paxonet Communications, Inc., announces two new members of its Metro Connect Architecture (MCA) family of products designed for 10-Gigabit Ethernet, OC-192c SONET, OC-48 SONET transport of data and IP (Internet Protocol) applications.

The two integrated circuits are named Roshni and Decathlon. Roshni is the industry's first low-power dual OC-48 SONET/SDH framer and pointer processor with Packet over SONET (POS) and ATM mapping capability built on an industry leading 0.14 micron process from Toshiba. Decathlon is an integrated 10-Gigabit Ethernet and OC-192c SONET/SDH transport device that targets the laser module market.


Roshni enables manufacturers of next-generation metro IP/Ethernet ring-based platforms the ability to develop low-cost, dual-fiber ring interfaces. Other target applications are edge routers, DWDM transport, carrier class ATM switches, carrier-class Ethernet switches and SAN switches.

This new framer is the first dual-channel product with two complete OC-48 SONET framers, pointer processors and POS/ATM mapping functions on a single die. Furthermore, Roshni only dissipatesI1.25 Watts per OC-48 path and 2.5 watts total, which is 60 percent less power than comparable devices in the market.

Roshni is a full-featured framer with transmission convergence capability for POS and ATM at STS-48c, STS-48 and STS-12 data streams. Each OC-48 channel can connect to external serializer-deserializer devices through industry-standard low-voltage pseudo emitter-coupled logic (LVPECL) or low-voltage differential signaling (LVDS) line side interfaces and to system-side devices through POS-PHY level 3 or Utopia Level 2/3 interfaces. Roshni enables complete SONET section, line and path overhead (OH) extraction and insertion.

The chip's two OC-48 SONET interfaces allow for flexible and efficient implementations of Automatic Protection Switching (APS) for both two-fiber Unidirectional Path Switching Ring (UPSR) and four-fiber Bi-directional Line Switching Ring (BLSR) networks. Roshni's dual OC-48 SONET processor makes it ideal for applications such as Resilient Packet Rings (RPR).

Roshni's highly programmable POS engine offers a variety of options including transparent packet mapping which enables support for newer delineation protocols, such as Generic Framing Protocol (GFP) through an external device.


Decathlon is a fully integrated LAN-PHY and WAN-PHY 10-Gigabit Ethernet transport device. It facilitates efficient integration of 10-Gigabit Ethernet and OC-192c SONET capability into WAN switches and routers.

On-chip functionality includes the Physical Coding Sub-Layer (PCS), WAN Interface Sub-layer (WIS) and a rate matching 10-Gigabit Media Independent Interface (XGMII) for a direct connection to a 10-Gigabit Ethernet MAC. 10-Gigabit Ethernet was developed by the IEEE 802.3ae Task Force and is an increasingly popular technology for service providers because it allows native Ethernet traffic to be transported over both the LAN and the WAN.

The WIS section is a complete, fully Telcordia/ITU compliant, OC-192c SONET/SDH interface with OC-192c framing, pointer processing and full-overhead processing. By implementing the complete OC-192c SONET/SDH framer and pointer processor with extensive performance monitoring and APS capabilities, Decathlon eliminates the need for separate Ethernet line terminating equipment when used in WAN environments.

Decathlon operates in three modes: 10-Gigabit Ethernet LAN-PHY, OC-192c WAN-PHYI and SONET/SDH OC-192c path terminator with an external POS engine.

The line interface is compliant with Optical Internetworking Forum (OIF) SFI-4 (SERDES to Framer Interface Level 4) in OC-192c PoS applications and IEEE 802.3ae XSBI standard for 10-Gigabit Ethernet LAN and WAN PHY applications. The system side interface is IEEE 802.3ae XGMII compliant. A second version of Decathlon will incorporate a 10-Gigabit Extended Attachment Unit Interface (XAUI) for system side back-plane interconnection.

Decathlon allows the design of line cards and modules that support both 10-Gigabit Ethernet LAN and WAN PHY modes, thus offering unprecedented flexibility for equipment manufacturers. Paxonet's modular architecture with an XGMII interface allows for cost efficient implementations, bringing LAN Ethernet price points to the WAN. Decathlon's XGMII interface provides easy interface to the equipment manufacturers link layer chip. Paxonet will offer 10-Gigabit Ethernet MAC intellectual property for implementation in an external ASIC or FPGA to its Decathlon customers.

Roshni is sampling now. Pricing is $276 each in 1,000 unit quantities. It is packaged in a 648-pin TBGA package rated over the industrial temperature range of -40 to +85 degrees C. Decathlon will sample in Q4. Packaging is a 388-pin SBGA. Pricing will be available at time of sampling. Both Decathlon and Roshni will be supported with a comprehensive design package, including reference designs, evaluation boards, software drivers and functional bus models.

About Paxonet:

Paxonet Communications, Inc., designs, develops and markets high-performance semiconductors for the metropolitan-access and metro-core networks. For more information, visit

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