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10G interconnects achieve error free transmission

Posted: 04 Jun 2008     Print Version  Bookmark and Share

Keywords:copper interconnects  optical  CDR 

Phyworks has demonstrated 10Gbps rack-to-rack copper interconnects of up to 30m using technology it originally developed for the optical module market. The company applied the equalisation 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 a 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 centre operators with greater flexibility.

"More than 80 per cent of high speed data centre 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 equalisation 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 centre."

10G inter-rack connections up to 30m have traditionally depended on 10GBASE-SR optical modules and 10GBASE-CX4 copper cable.

- John Walko
EE Times Europe

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