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Single-chip data transceivers serve short-haul links

San Diego — Vativ Technologies Inc. has begun sampling what it claims is the industry's only single-chip 10-Gigabit Ethernet (GbE) transceiver for full-duplex operation over a single CAT5e or CAT6 unshielded twisted-pair (UTP) cable.

This transceiver enables the use of widely available, low-cost CAT5e and CAT6 cables, as well as off-the-shelf RJ-45 connectors, said Sreen Raghavan, Vativ Technologies' president and CEO. “This makes solutions based on the V10LAN the most economical for 10-Gigabit Ethernet backbones, costing less than a tenth of an equivalent short-reach optical solution.”

The transceiver is implemented in 0.13-CMOS technology, with the host side supporting an IEEE 802.3ae-compliant 10 GbE extended attachment-unit interface (Xaui). Full duplex transmission over UTP cabling is achieved through remodulating the Xaui data by using a multibit-per-baud modulation scheme.

Additionally, extremely powerful forward error correction (FEC) coding provides
an additional 8 dB of coding gain to improve immunity to external noise. On the
receiver side, an integrated custom digital signal processor implements
high-performance adaptive equalization, echo and near-end cross talk/far-end cross talk (NEXT/FEXT) cancellation algorithms to enable robust, error-free reception.

The company is currently working with early adopters who are producing
V10LAN-based Xenpak copper modules and 10 GbE network interface cards (NICs) for
the data center market. These devices will enable the population of Xenpak and PCI slots with a significantly cheaper alternative — without requiring the replacement of existing Ethernet switches and corporate servers.

The transceiver includes a standard two-wire management data input/output (MDIO) interface for diagnostic information, status monitoring and control. The V10LAN's architecture permits easy implementation in a Xenpak form factor with the support of multisource agreement (MSA)-specific I/O and registers. The chip allows the use of a single low-cost 25-MHz crystal oscillator to provide the reference clock.

Customer samples and evaluation modules are available now, with volume production scheduled for early Q3 of 2005. The V10LAN is priced at $135 each in 1,000-piece quantities. Click here for additional technical information on the V10LAN.

Vativ Technologies , 1-858-658-0050, Ext. 136, www.vativ.com.

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