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BCM5221
PRODUCT
(R)
Brief
OF BENEFITS
10/100BASE-TX SINGLE-CHANNEL SIGNI-PHYTM TRANSCEIVER
BCM5221 FEATURES SUMMARY
* Power Supply: 2.5V or 3.3V * Integrated Voltage Regulator to Allow Operation from * Power Consumption: <275 mW * Unique Energy Detection Circuit to Enable Intelligent * HP Auto-MDIX * Cable Length Indication * Cable Noise Level Indication * Robust CESD Tolerance * Cable Length Greater Than 140 meters * Well Under 10 PPM Defect Ratio Quality * +10% Voltage Tolerance * Industrial Temperature Range (-40 to 85C) * MII and RMII Configurable * IEEE 1149.1 (JTAG) Scan Chain Support * MII Management Via Serial Port * Layout-Compatible with BCM5201 * 10BASE-T/100BASE-TX/FX IEEE 802.3u * Glueless TX-to-FX Media Conversion * 64-pin TQFP or 64-pin BGA Package
Fast Ethernet Transceiver Power Management a Single Supply Source
* Low power and intelligent power management
* Increased active working time * Prolonged battery life in active standby * Increased reliability
* Improved ease of use and installation, reduced
support cost
* Straight-through or cross-over cables accommodated independent of installation * Advanced cable diagnostic features to enable remote monitoring and debug of cabling infrastructure * Resistance to CESD to reduce product destruction and product returns
* DSP-based Signi-PHYTM architecture
to ensure performance over temperature, voltage and process variation
* Proven in over 450,000,000 Fast Ethernet ports
* Faster design turn-around with BCM5201 layout compatibility * Ease of manufacturing with JTAG support * Fully integrated TX/FX PHY transceiver (MII/RMIIto-TX magnetics or FX optics)
* Lower system cost * Simplified system and board design
Embedded 10/100 BASE-TX Application
System Bus
CPU
Media Access Controller MAC
BCM5221
MII/RMII
10/100 BASE-TX Single-Channel PHY Transceiver
RJ45 Connector Magnetics Module
SRAM
BCM5221
OVERVIEW
Lowest-Power Fast Ethernet PHY With a power dissipation of 250 mW, the BCM5221 is the industry's lowest-power Fast Ethernet PHY. It features an integrated voltage regulator, and can be supplied by either a 2.5V or 3.3V power source. In addition, the BCM5221 has several intelligent power-down states that conserve power, yet allow products based on it to automatically turn on when needed. The BCM5221 includes a unique Intelligent Power-Management feature that powers down the device if energy is not detected on the cable. This feature is especially useful for portable and power-sensitive applications such as laptop LAN card adapters. The BCM5221 allows PCMCIA or CardBus adapters to remain plugged in and draw virtually no energy even if the client is no longer connected to the network. Because most laptop users do not remove their LAN PC card when working remotely, this feature results in a noticeably extended battery life for laptop computer users. The BCM5221 can be set to periodically wake up at a userdefined interval, allowing the product to initiate keep-alive traffic on the network. For lowest power consumption, the BCM5221 can be put in a power-off state (<2.5 mW). Network Tolerance The BCM5221 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 end of the network cable:
Broadcom(R), the pulse logo, Signi-PHY, Digi-PHY and Connecting everything(R) are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks are the property of their respective owners.
the BCM5221 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 BCM5221 has been designed and tested to withstand over 5K V of CESD, which unlike other transceivers prevents the device from being destroyed in a CESD event. DSP-Based PHY Technology The BCM5221 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 BCM5221 to achieve high interoperability and to exhibit robust performance across voltage (+/-10%), temperature (-40 to 85C), and process variations. Broadcom's DSP-based, Digi-PHYTM 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 Applications for the BCM5221 that take advantage of its low power and high network tolerance:
* * * * PCMCIA/CardBus Cards LAN on Motherboard IP Phones Cable Modems * * * * Set-Top Boxes Print Servers Wireless Access Points Embedded Telecom
(R)
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 2003 by BROADCOM CORPORATION. All rights reserved. 5221-PB03-R-04-15-03
Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com

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