BCM5222_04 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – 10/100BASE-TX DUAL-PORT DIGI-PHY TRANSCEIVER

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Lowest-Power Fast Ethernet PHY
With a power dissipation of less than 195 mW per port, the BCM5222 is
the industry’s lowest-power Fast Ethernet PHY. In addition, the
BCM5222 has several intelligent power-down states that conserve
power, yet allow products based on it to automatically turn on when
needed.
The BCM5222 includes a unique Intelligent Power-Management feature
that powers down the device if energy is not detected on the cable. The
energy detect feature is especially useful for portable and power-
sensitive applications, as the BCM5222 draws virtually no energy if the
cable is not plugged in and the client is not connected to the network.
This results in noticeably extended battery life for portable applications,
and increases product reliability due to decreased power dissipation. For
lowest power consumption, the BCM5222 can be put in a power-off state
(<2.0 mW).
Network Tolerance
The BCM5222 includes features that simplify the installation and
maintenance of local area networks. One such feature is the HP Auto-
MDIX capability, which automatically detects and corrects crossed
cables. With HP Auto-MDIX, the installer does not need to know what
is on the other side of the network cable: the BCM5222 automatically
switches its transmit and receive circuitry to accommodate the link
partner’s polarity.
Cable-sourced electrostatic discharge (CESD) is a recently discovered
phenomenon that occurs when an electrically charged network cable is
plugged into a networked product, an issue becoming more prevalent
with recent cable installations. The BCM5222 has been designed and
tested to withstand over 9 KV of CESD, which unlike other transceivers,
prevents the device from being destroyed in a CESD event.
DSP-Based PHY Technology
The BCM5222 builds on Broadcom’s proven DSP PHY design and full
custom circuit design techniques to create a highly integrated and robust
physical layer solution. DSP techniques allow the BCM5222 to achieve
high interoperability and to exhibit robust performance across
temperature (-40 to 85C°), voltage, and process variations. Broadcom’s
DSP-based, Digi-PHY™ technology has been proven in the shipment of
over 450,000,000 Fast Ethernet ports. Broadcom’s superior quality has
resulted in a failure rate well under 10 PPM.
Applications
• IP Phones
• Backplane Bus Communication
• Embedded Telecom
• Print Servers
Broadcom^®, the pulse logo, and Connecting everything^® are trademarks of Broadcom Corporation and/
or its subsidiaries in the United States and certain other countries. All other trademarks mentioned are the
property of their respective owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2004 by BROADCOM CORPORATION. All rights reserved.
5222-PB05-R
07/01/04
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com