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Broadcom's 10GBASE-T PHYs claim 50% less power

Posted: 23 Apr 2012     Print Version  Bookmark and Share

Keywords:10GBASE  PHY  EEE 

Broadcom Corp. introduced the highly integrated quad-port BCM84844 and dual-port BCM84846 10GBASE-T physical layer transceivers (PHYs) to its growing portfolio of 10GBASE-T networking solutions that claim to lower operating power by more than 50 per cent.

Optimised for top-of-rack switches, 10GbE server adapters and LOMs (LAN on motherboard) in the data centre, the devices are said to substantially reduce power consumption at 10GE to less than 2W per port through the use of EEE, and extend the benefits of EEE to include all device speeds including 1GbE.

Broadcom's AutoGrEEEn technology enables systems with legacy MACs to get the power savings of EEE in periods of reduced link utilisation. Both PHYs provide on-chip IEEE802.1ae MACsec link layer security and 1588v2 precision time protocol (PTP), delivering precise and accurate synchronisation of nodes in the network, according to the company.

Broadcom's new 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 BCM84844 is offered in a 27x27mm package while the BCM84846 comes in a 21x21mm package. Both devices are now sampling with production volume slated for 2H12.





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