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10GBASE-T PHYs boast power savings

Posted: 23 Apr 2012 ?? ?Print Version ?Bookmark and Share

Keywords:data center? 10GBASE-T? PHY? 10GbE?

Broadcom Corp. has expanded its line of 10GBASE-T networking solutions with the release of two 10GBASE-T physical layer transceivers (PHYs). Engineered for top-of-rack switches, 10GbE server adapters and LAN on motherboard (LOM) in data centers, the quad-port BCM84844 and dual-port BCM84846 claim to cut operating power by half.

The PHYs reduce power consumption at 10GE to less than 2W per port through the use of Energy Efficient Ethernet (EEE), and extend the benefits of EEE to include all device speeds including 1GbE.

Power is critical as network managers seek to reduce cost and carbon footprint of large scale data centers. Broadcom's AutoGrEEEn technology enables systems with legacy MACs to get the power savings of EEE in periods of reduced link utilization. Both PHYs provide on-chip IEEE802.1ae MACsec link layer security and 1588v2 precision time protocol (PTP), delivering precise and accurate synchronization of nodes in the network.

Broadcom's BCM84844 and BCM84846 deliver lower power while offering pin compatibility to previous Broadcom devices (BCM84834 and BCM84836) and integration with Broadcom's broad portfolio of switch, controller, and adapter solutions.�This includes PHY drivers within Broadcom's Software Development Kit (SDK) and common implementations of MACsec and 1588v2 PTP.

The networking solutions support IEEE Std 802.3az-2010 EEE capability for 10GBASE-T,

1000BASE-T and 100BASE-TX. They claim to deliver robust operation over 100m Category 6A cables with industry-standard 4-pair magnetics. Additionally, the PHYs flaunt IEEE standard device interoperability at 10Gb/s, 100Mb/s and 1000Mb/s. The devices' line-side XFI enables dual-media applications and offers a reduced footprint at 27 x 27mm (BCM84844) and 21 x 21mm package (BCM84846).

The BCM84844 and BCM84846 are now sampling with production volume slated for 2H12.

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