Sunday, August 8, 2010

Vitesse Expands its 10G Ethernet SerDes Line

Vitesse Semiconductor will begin sampling its latest 10G Ethernet physical-layer SerDes designed for high-density 10G aggregation in emerging 40G/100G Ethernet backbones, mobile backhaul/transport, and enterprise applications. The roll out includes dual and quad Ethernet PHYs supporting Synchronous Ethernet and other precision timing capabilities, along with working and protection failover capability for Carrier Ethernet resiliency.

Vitesse said its new PHYs deliver insertion loss and crosstalk compensation capabilities well in excess of the 10GBASE-KR backplane standard, enabling the devices to support new KR backplane applications along with upgrading older legacy backplanes. The insertion loss compensation ability of 35 dB and insertion loss to crosstalk ratio (ICR) support down to 6 dB exceed KR requirements. In addition to supporting signal degradations in excess of the KR link requirements, the devices sustain full KR compliant rate auto-negotiation and link optimization.

Some key features of the new VSC8488 and VSC8484 devices:

  • Both devices include a crosspoint switch, enabling easier design of redundant failover systems;

  • Vitesse's analog Electronic Dispersion Compensation (EDC) implementation results in a total path latency of 1 ns, compared to DSP-based latencies measuring hundreds of ns, thus enabling low latency system design;

  • Both devices support 40GBASE-KR4, 40GBASE-CR4, 40GBASE-CR10, nAUI, and nPPI high-speed I/O requirements allowing systems designed today to be ready for upgrade to 40G/100G; and

  • Superior receiver performance and low jitter SONET compliant transmit path allows the user to support a broad array of module formats including all of the present XFP, SFP+, QSFP+, and CFP host applications with high system link margin.

"Across the network, from the initial access points at Mobile Backhaul/Transport and Broadband to the core, system needs demand rapid and accelerating bandwidth expansion. Additionally, the bandwidth is being added during a transition period in network implementation from SONET/TDM to Ethernet," said Gary Paules, product marketing manager at Vitesse. "Because the VSC8488 and VSC8484 dual and quad 10G PHYs uniquely address these expansion and transition challenges, designers can accelerate development of 40G/100G Ethernet backbones, Mobile Backhaul/Transport, and Ethernet networks by leveraging the unique capabilities of these new Vitesse devices."

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