Marvell (Santa Clara, CA) offers the Alaska® family of secure optical Ethernet transceivers for datacenters and carrier networks. The four products cover applications at 10G, 1G, and 100Mb Ethernet speeds. The 88X2140M quadport and 88X2120M dual-port series of 10G transceivers feature XFI 10G serial and reduced XAUI interfaces to support SFP+ applications. These 10G PHYs are suitable for dense multi-port applications such as carrier class switches and routers. The 88E1542M and 88E1522M products are designed to support 1000BASE-X and 100BASE-FX in quad-port and dual-port configurations in space-efficient packages enabling high port densities as well as modular applications.

The transceivers incorporate Marvell’s LinkCrypt™ technology, which merges MAC layer security functions in the Ethernet physical layer to enable secure, converged networks delivering voice, video, and data capabilities. The Alaska family features time-aware Ethernet technology comprised of synchronous Ethernet and IEEE 1588 Time Stamping features. Synchronous Ethernet enables physical layer clock recovery and IEEE 1588, also known as Precision Timing Protocol (PTP), packet-based distribution of precise time, and frequency over Ethernet. These two features form the foundation of transitioning from TDM to Ethernet backhaul by achieving SONET/SDH-like accuracies for timing and synchronization.

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This article first appeared in the February, 2011 issue of Embedded Technology Magazine.

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