BCM5222
®
10/100BASE-TX DUAL-PORT DIGI-PHY™ TRANSCEIVER
FEATURES
•
Dual-port 10/100BASE-TX IEEE 802.3u Fast Ethernet
SUMMARY OF BENEFITS
•
Low power and intelligent power management
•
Increase active working time
•
Prolonge battery life in active standby
•
Increase reliability
•
Improved ease of use and installation, reduced support cost
•
Straight-through or cross-over cables accommodate
independent of installation
•
Resistance to CESD prevent product destruction and product
returns
•
Advanced cable diagnostic features enable remote monitoring
and debugging of cabling infrastructure
•
DSP-based Digi-PHY™ architecture ensures performance
over temperature, voltage, and process variation
•
Proven in over 450,000,000 Fast Ethernet ports
•
Provides ease of manufacturing with JTAG support
transceiver
•
Power consumption: <195 mW per port
•
Unique energy detection circuit to enable intelligent power
management
•
HP auto-MDIX
•
•
•
•
•
•
•
•
•
•
Robust CESD tolerance
Cable length indication
Cable noise level indication
Cable length greater than 140 meters
Well under 10 PPM defect ratio quality
Industrial temperature range (-40 to 85C°)
MII/7-wire serial interface
IEEE 1149.1 (JTAG) scan chain support
MII management via serial port
100-pin PQFP and 100-pin fpBGA package
•
Enables simplified system and board design with MAC
interface and packaging options
Backplane Bus Communication 10/100BASE-TX Application
Main Control Board
Peripheral Board #1
BCM5228
BCM5222
BCM5222
Control
Data
Peripheral Board #2
OVERVIEW
TD+[1:2]
Auto
MDIX
Multimode
Xmt DAC
Baseline
Wander
Correction
Digital
Adaptive
Equalizer
4
10BASE-X
PCS
TXD[1:2]
TXEN[1:2]
TXER[1:2]
TXC[1:2]
COL[1:2]
RXC[1:2]
CRS[1:2]
RXDV[1:2]
RXER[1:2]
RXD[1:2]
ACTLED#[1:2]
LNKLED#[1:2]
SPDLED#[1:2]
FDXLED#[1:2]
MODES
100BASE-X
PCS
RD+[1:2]
ADC
4
CRS/Link
Detection
Auto-Negotiation
/Link Integrity
LED
Drivers
XTALO
XTALI
RDAC
JTAG
5
Clock
Generator
Bias
Generator
JTAG
Test Logic
Clock
Recovery
MII
Registers
MII
Mgmt
Control
MDC
MDIO
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: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
Linux and Android
京公网安备 11010802033920号
EEWORLD
