10-GbE LAN/WAN PHY from Vitesse targets SFP+ transceiver designs

Vitesse Semiconductor has expanded its VSC8486 series of 10-Gbps XAUI to XFI LAN/WAN transceivers to include the VSC8486-11. Featuring synchronous Ethernet clocking, the device enables high-speed signals for XFP and SFP+ module-based Carrier Ethernet equipment, supporting 10 Gigabit Ethernet (GbE), 10G Fibre Channel (10 GFC), and WIS (OC-192/STM-64) network applications.

October 9, 2009 -- Vitesse Semiconductor Corp. has expanded its VSC8486 series of 10-Gbps XAUI to XFI LAN/WAN transceivers to include the VSC8486-11.

Featuring synchronous Ethernet clocking, the device enables high-speed signals for XFP and SFP+ module-based Carrier Ethernet equipment, supporting 10 Gigabit Ethernet (GbE), 10G Fibre Channel (10 GFC), and WIS (OC-192/STM-64) network applications. The transceiver’s single 1.2V volt supply and low power requirement make it suitable for single, dual, and high density line card applications, says the company.

According to Vitesse, unlike competitive devices that rely on high-power electronic dispersion compensation, the VSC8486-11 employs the proprietary low-power enhanced FlexEQ architecture, which includes circuitry that compensates for connector and channel losses. This allows the device to be INF-8077i XFP and SFF-8431 SFP+ module specification compliant; the architecture also provides fast lock times and low latency required for today’s Carrier Ethernet networks.

In LAN mode, the VSC8486-11 meets and exceeds the Ethernet IEEE 802.3ae and Fibre Channel T11 10 GFC standards. Additionally, the device is compliant with the SONET jitter specification defined by Bellcore GR253 in WAN mode. The VSC8486-11 has a typical power dissipation of 750mW in LAN mode and 850mW in WAN mode.

With synchronous Ethernet clocking, the VSC8486-11 can be used with either XFP or SFP+ optical modules, making the device suitable for Carrier Ethernet line card applications. To simplify circuit card layout, the device’s XAUI lanes can be swapped or inverted. The XAUI interface includes pre-emphasis for the transmitter, equalization for the received signal, and de-skew logic to compensate for propagation-delay differences. It extracts the clock and the data, and performs physical-coding sub-layer (PCS) functions such as 8b/10b coding and 64b/66b coding. Along with a WIS layer for WAN applications, forward error correction (FEC) is available for greater reach over fiber distances.

“The VSC8486-11’s capabilities, dimensions and competitive cost make it the perfect solution for evolving metro Ethernet networks, enterprise networks, campus environments and central office connectivity,” offers Koby Reshef, vice president of marketing at PacketLight Networks. “Collaborating with Vitesse and using the VSC8486-11 transceiver has made our suite of WDM solutions even more robust, providing customers with a distinguished solution that meets the emerging needs of metro Ethernet, Triple Play and enterprise data sharing applications.”

Vitesse maintains that the demand for high-performance transceivers continues to increase as communications traffic also grows. Despite the global economic slowdown, annual shipment of 10G ports jumped nearly 80- to 90-percent in calendar 2008 to nearly two million ports, claims the company. Industry analysts are predicting another increase in 2010 to as high as three to five million ports, with expected growth in terms of port counts by 2013 to be 10 fold. In response to this market growth, the VSC8486-11 has been specifically designed to fit in a 144-pin chip scale package (FCBGA) in an effort to allow Vitesse to stay ahead of the price curve in support of customer requirements for aggressive price points when designing for today’s 10 GbE market.

Available in a 13 x 13-mm package, the VSC8486-11 is in full production. Pricing is available for customers upon request.

On the Web:
www.vitesse.com

www.packetlight.com

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