BCM5221A4KMLG [BOARDCOM]
10/100BASE-TX/FX Mini-Φ⢠Transceiver;
| 型号： | BCM5221A4KMLG |
| 厂家： | 
Broadcom Corporation. |
| 描述： | 10/100BASE-TX/FX Mini-Φ⢠Transceiver 局域网（LAN）标准 |
| 文件： | 总2页 (文件大小：189K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
BCM5221
®
Brief
10/100BASE-TX/FX Mini-Φ™ Transceiver
S U M M A R Y O F B E N E F I T S
F E A T U R E S
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Power Supply: 2.5V or 3.3V
Low power and intelligent power management
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Increased active working time
Prolonged battery life in active standby
Increased reliability
Integrated voltage regulator to allow operation from a single
supply source
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Power Consumption: <175 mW
Unique energy detection circuit to enable intelligent power management
HP Auto-MDIX
Improved ease of use and installation, reduced support cost
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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
Cable length indication
Cable noise level indication
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DSP-based Signi-PHY™ architecture to ensure performance
over temperature, voltage, and process variation
Robust CESD tolerance
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Proven in over two billion Fast Ethernet ports
Cable length greater than 145 meters
Well under 10 PPM defect ratio quality
±10% voltage tolerance
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Ease of manufacturing with JTAG support
Fully integrated TX/FX PHY transceiver (MII/RMII-to-TX
magnetics or FX optics)
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Lower system cost
Simplified system and board design
Industrial temperature range (–40°C to 85°C) package options
available
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MII and RMII configurable
IEEE 1149.1 (JTAG) scan chain support
MII management via serial port
Layout compatible with BCM5201
A P P L I C A T I O N S
Servers - Network Controller - Sideband Interface (NC-SI)
using RMII interface
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10BASE-T/100BASE-TX/FX IEEE 802.3u
Fast Ethernet transceiver
Digital TV, PCMCIA/CardBus cards, LAN on motherboard
(LOM), IP phones, cable modems, set-top boxes and print
servers, wireless access points, and embedded telecom
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Glueless TX-to-FX media conversion
64-pin TQFP with 64-pin BGA package, 48-pin KML package;
RoHS 5/6 and 6/6 package options available
Embedded 10/100 BASE-TX Application
BCM5221
Media
System Bus
MII/RMII
RJ-45
Connector
Access
Controller
(MAC)
10/100 BASE-TX
Single-Channel
PHY Transceiver
CPU
Magnetics
Module
SRAM
O V E R V I E W
SD
BCM5221 Block Diagram
The BCM5221: Lowest-Power Fast Ethernet PHY
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.
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.
DSP-Based PHY Technology
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 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°C to 85°C), and process variations.
Broadcom's DSP-based, Digi- ™ technology has been proven in the
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shipment of over two billion Fast Ethernet ports. Broadcom's superior
quality has resulted in a failure rate well under 10 PPM.
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).
Applications
Applications for the BCM5221 that take advantage of its low power and
high network tolerance:
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Servers - Network Controller - Sideband • Cable modems
Interface (NC-SI) using RMII interface
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: the BCM5221 automatically
switches its transmit and receive circuitry to accommodate the link
partner’s polarity.
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Digital TV
PCMCIA/CardBus cards
LAN on motherboard (LOM)
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Set-Top boxes
Print servers
Wireless Access Points
(WAP)
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IP phones
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Embedded telecom
Broadcom®, the pulse logo, Connecting everything®, the Connecting everything logo, Signi-PHY™,
and Digi- ™ are among the trademarks of Broadcom Corporation and/or its affiliates in the United
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States, certain other countries and/or the EU. Any other trademarks or trade names mentioned are the
property of their respective owners.
®
BROADCOM CORPORATION
5300 California Avenue
Phone: 949-926-5000
Fax: 949-926-5203
Irvine, California 92617
© 2008 by BROADCOM CORPORATION. All rights reserved.
E-mail: info@broadcom.com
Web: www.broadcom.com
5221-PB06-R
04/11/08
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