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FPGA meets 10G optical jitter performance

Posted: 10 Nov 2010 ?? ?Print Version ?Bookmark and Share

Keywords:FPGA? transceiver? optical communications?

Xilinx Inc. unveils FPGAs that support 40Gbps and 100Gbps line cards with flexible port configurations, including 1x40Gbps, 4x10Gbps, 1x100Gbps and 10x10Gbps. The company's new Virtex-6 HXT FPGAs support the long reach optical requirements of next-generation communications equipment without the need for costly external re-timer circuitry through market leading transceiver jitter performance.

The company says it has validated Virtex-6 HXT FPGAs interoperability with optical transceiver suppliers including Avago Technologies.

Xilinx Virtex-6 HXT devices seamlessly interface to industry standard SFP+, XFP, and CFP optical modules at line rates up to 11.18Gbps addressing next generation optical transport application needs. Plus, its jitter performance of interfaces.

Devices features
Optimized for applications that require ultra high-speed serial connectivity, Virtex-6 HXT FPGAs offer the industry's highest serial bandwidth through a combination of 6.6Gbps GTX transceivers and 11.18Gbps GTH transceivers to enable next-generation packet and transport, switch fabric, video switching, and imaging equipment. To enable these applications, Virtex-6 HXT devices also feature a ground up design that is optimized for 10G signallingincluding Transmit (Tx) pre-emphasis, Receive (Rx) linear equalization and Decision Feedback Equalizer (DFE) to meet the tough jitter requirements. It offers lower jitter with superior DFE and EQ circuits, higher total transceiver count, more BRAM and highest number of Serdes capabilities. Its design topology isolates the high performance analog circuits from the noisy digital logic and I/O providing superior noise performance. It is a ground up package design with all serial pins isolated from parallel I/O, in-package power planes and capacitors, and a sparse-chevron pinout resulting in 40dB of isolation between Tx and Rx and 30dB of isolation between channels. Overall, the company claims the performance of the Virtex-6 HXT device lets designers interface directly to optical modules without the need for external re-timers, thereby saving on BOM, power dissipation and board real estate.

The Virtex-6 HXT FPGAs are now shipping and customers can start their designs immediately with the ISE Design Suite version 12.3.

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