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Moving Beyond 10Gbit Ethernet

By Kathleen Zipp | April 19, 2007

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Ten gigabit Ethernet has been the fastest Ethernet standard available, that is until recently, when Phyworks and Molex demonstrated robust data transmission at 10.3 Gbps over 1 m of copper traces across a backplane. This makes it the first technological partnership to demonstrate some of the targets of the emerging IEEE 802.3ap 10G Ethernet standard. The demonstration took place at the DesignCon show in Santa Clara during the last week of January 2007.

Ethernet signals are subject to crosstalk, a disturbance in signal caused by electromagnetic interference. Molex’s I-Trac broadside-coupled backplane connector system and Phyworks’ PHY1066 equalizer enabled Backplane Interface Device (BID) together compensate for this speed-inhibiting factor. Both showed robust 10 Gbps data transmission in the presence of crosstalk aggressors. This accomplishment will enable system suppliers to communicate at high data-rates between devices and cards using minimal components.

The PHY1066 offers channel equalization to compensate for the intersymbol interference that occurs when data are transmitted at high speed over a copper backplane. The device uses novel adaptation algorithms together with low distortion signal path circuit technology and a high performance CDR. The I-Trac controls impedance, with lower cross-talk and higher overall bandwidth. With its open pin-field design, the system provides customers the flexibility to assign high-speed differential pairs, low-speed signals, power, and ground contacts anywhere within the pin-field.

As 10Gbit Ethernet gains popularity, several applications could use the extra bandwidth, such as video on demand, distributed computing, HPC deployments, medical imaging, and scientific simulation. Enterprises can set up campus-wide networks covering larger distances. Bandwith intensive applications will grow, such as digital video conferencing and VoIP. Companies will have faster access to their data centers and disaster recovery centers in different cities.

Molex
www.molex.com

Phyworks Ltd. 
www.phyworks-ic.com

:: Design World ::


Filed Under: Wireless, Networks • connectivity • fieldbuses

 

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