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10G copper interconnects roll from Phyworks

Posted: 04 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:copper interconnects? optical modules? 10G assembly?

Communications chip specialist Phyworks has demonstrated 10Gbit/s rack-to-rack copper interconnects of up to 30m using technology it originally developed for the optical module market.

The company applied the equalization and clock and data recovery (CDR) capabilities of its PHY2060 IC to active serial copper cable assemblies which are currently being trialled by cable and connector OEMs.

Phyworks says the complete 10G assembly achieves error free transmission at latency of 120ns over 30m of 24AWG twin-ax copper cable.

The chip can be integrated into incumbent XFP and emerging SFP+ ports, enabling new copper cable interconnects to be hot-plugged into existing optical ports, providing data center operators with greater flexibility.

"More than 80 percent of high speed data center interconnects are under 30m and existing optical and copper solutions are just too expensive, bulky and power-hungry for the task," said Phyworks CEO Stephen King. "We have proved that the equalization and CDR technology developed to achieve high performance in the optical market can also guarantee the performance of shorter range copper communication links, which takes cost, weight and power out of the data center."

10G inter-rack connections up to 30m have traditionally depended on 10GBASE-SR optical modules and 10GBASE-CX4 copper cable. In the XFP connector format, a pair of 10GBASE-SR optical modules costs around $400-600 USD while a substitute active serial copper cable assembly is predicted to cost around $150-200.

- John Walko
EE Times Europe

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