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Ethernet controllers, PHYs are EEE draft-compliant

Posted: 21 Dec 2009     Print Version  Bookmark and Share

Keywords:Ethernet controller  PHY  network 

Broadcom Corp. launched a range of Ethernet controller and PHY device solutions that support the Energy Efficient Ethernet (EEE) IEEE P802.3az draft standard.

Network equipment of all types can benefit from lower power consumption that reduces energy costs and lowers overall operating costs for IT organisations. Broadcom provides these enhanced power savings through Broadcom Energy Efficient Networking—a set of standards-friendly features, including AutogrEEEn technology, that extends the power saving capabilities of its EEE draft-compliant products.

The IEEE P802.3az specification provides for energy savings at the PHY level when the network link is idle. Network infrastructure components can take advantage of power savings when the network stack experiences periods of inactivity, starting with both sides of the media access controller (MAC)/PHY interface, when a port is in EEE mode. In multi-port systems, the savings could be increased further by optimising shared resources.

Broadcom Energy Efficient Networking provides additional power savings by supporting the enhanced Layer 2 savings mechanism (currently optional for triple speed products and mandatory for 10Gbit speeds in the IEEE 802.3az specification). It also implements comprehensive control policies in Broadcom PHY and controller chips that allow for optimised, customisable and enhanced energy savings for a wide variety of applications. Broadcom Energy Efficient Networking implements energy savings metrics that allow Broadcom end-customers to quantify the savings that are realised during operation.

A Broadcom EEE draft-compliant PHY lowers power consumption by up to 70 per cent during periods of low traffic utilisation when compared to a PHY without EEE implemented. The overall power consumption is reduced on products including switches, storage systems, servers and PCs that have a Broadcom EEE-enabled PHY in their design.

Broadcom's AutoGrEEEn technology allows a Broadcom EEE-enabled PHY to be in EEE mode when interfacing with a non-EEE enabled MAC, without requiring changes to the non-EEE device. This provides system designers additional flexibility to take advantage of EEE technology and realise power savings today for their applications.

Device specs
The BCM57781 is a highly-integrated GbE controller targeted for PC applications. It integrates both the Ethernet MAC and PHY on a single chip to provide wired network connectivity for desktop, notebook and netbook systems.

The BCM57785 and BCM57765 are GbE controller and 5-in-1 memory card reader supporting the latest standard for memory cards. The device is targeted for PC applications where low power consumption, low cost and small board space are critical.

The BCM5718 is a dual-port GbE controller targeted for server and workstation applications supporting a PCI Express v2.0-compliant host interface. It provides a rich feature-set with unparalleled power savings while maintaining the most efficient cost and board space requirements.

Meanwhile the BCM84823 PHY incorporates the EEE draft-standard and provides substantial power savings over current PHY products in the market. It is a highly-integrated 65nm, dual-port 10GBASE-T GbE PHY with XFI and XAUI MAC interface options. This is Broadcom's first EEE-enabled 10GBASE-T PHY based on 65nm technology, and its dual-port configuration enables high density top-of-rack (ToR) switch and server applications.

"Broadcom has incorporated the IEEE P802.3az (EEE) draft standard into its product portfolio and we have differentiated our solution by including Broadcom Energy Efficient Networking. These features go the extra mile to extend the benefits of EEE across the entire network," said Nariman Yousefi, senior VP and general manager, enterprise networking group, Broadcom.

Broadcom's EEE-draft compliant products, BCM57781, BCM57785, BCM57765, BCM5718 and BCM84823, are now sampling to early access customers. Pricing is available upon request.





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