10/100BASE-TX/FX Mini-Φ™ Transceiver
• Power Supply: 2.5V or 3.3V
• Low power and intelligent power management
• Increased active working time
• Prolonged battery life in active standby
• Increased reliability
• Integrated voltage regulator to allow operation from a single
supply source
• Power Consumption: <175 mW
• Improved ease of use and installation, reduced support cost
• Straight-through or crossover cables are accommodated, and such
accommodation is independent of installation
• Advanced cable diagnostic features to enable remote
monitoring and debug of cabling infrastructure
• Resistance to cable-sourced electrostatic discharge (CESD) to
reduce product destruction and product returns
• Unique energy detection circuit to enable intelligent power management
• HP Auto-MDIX
• Cable length indication
• Cable noise level indication
• DSP-based Signi-PHY™ architecture to ensure performance
• Robust CESD tolerance
over temperature, voltage, and process variation
• Proven in over 450,000,000 Fast Ethernet ports
• Cable length greater than 145 meters
• Faster design turnaround with BCM5201 layout
• Well under 10 PPM defect ratio quality
• ±10% voltage tolerance
• Ease of manufacturing with JTAG support
• Industrial temperature range (–40 to 85°C) package options available.
• Fully integrated TX/FX PHY transceiver (MII/RMII-to-TX
magnetics or FX optics)
• Lower system cost
• Simplified system and board design
• 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
• Servers - Network Controller - Sideband Interface (NC-SI)
Fast Ethernet transceiver
using RMII interface
• Glueless TX-to-FX media conversion
• Digital TV, PCMCIA/CardBus cards, LAN on Motherboard
• 64-pin TQFP with 64-pin BGA package, 48-pin KML package;
(LOM), IP phones, cable modems, set-top boxes and print
servers, wireless access points, and embedded telecom
RoHS 5/6 and 6/6 package options available
Embedded 10/100 BASE-TX Application
System Bus
10/100 BASE-TX
PHY Transceiver
BCM5221 Block Diagram
The BCM5221: Lowest-Power Fast Ethernet PHY
With a power dissipation of 175 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 user-defined
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 AutoMDIX 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: the BCM5221 automatically
switches its transmit and receive circuitry to accommodate the link
partner’s polarity.
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 5 KV 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 85°C), and process variations. Broadcom's
DSP-based, Digi- Φ™ technology has been proven in the shipment of
over a billion Fast Ethernet ports. Broadcom's superior quality has
resulted in a failure rate well under 10 PPM.
Applications for the BCM5221 that take advantage of its low power and
high network tolerance:
• Servers - Network Controller - Sideband •
Interface (NC-SI) using RMII interface
• Digital TV
• PCMCIA/CardBus Cards
• LAN on Motherboard (LOM)
• IP Phones
Cable Modems
Set-Top Boxes
Print Servers
Wireless Access Points
Embedded Telecom
Broadcom®, the pulse logo, Connecting everything®, the Connecting everything logo, Signi-PHY™,
and Digi- Φ™ are among the trademarks of Broadcom Corporation and/or its affiliates in the United
States, certain other countries and/or the EU. Any other trademarks or trade names mentioned are the
property of their respective owners.
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2007 by BROADCOM CORPORATION. All rights reserved.
Phone: 949-450-8700
Fax: 949-926-5203
E-mail: [email protected]