BCM5466SR Datasheet, PDF (2/2 Pages) Broadcom Corporation. – QUAD-PORT GIGABIT ETHERNET COPPER TRANSCEIVER WITH COPPER/FIBER MEDIA INTERFACE

OVERVIEW
TRD [0:3] ± {1:4}*
XTALI
XTALO
RDAC {1:2}*
TX DAC
16
Automatic
Gain
Control
PGA
ADC
Auto-
Negotiation
Clock
Generator
Bias
Generator
Echo
Canceler
Crosstalk
Canceler
X3
16
Symbol
2
Encoder
2
2
Multiplexer
FFE
DFE/
Trellis
Decoder
Timing &
Phase
Recovery
SerDes/
SGMII
2
Multiplexer
2
2
Symbol
Decoder/
2
Aligner
2
16
MII
Registers
MII
MGMT
Control
*{1:4} Refers to the 4 separate Gigabit Ethernet transceivers in the BCM5466R
TXD[3:0]
TX_EN {
TX_ER {
GTX_CLK
TX_CLK
SGIN±
SCLK±
SGOU
COL {1:4}
CRS {1:4
RX_CLK
RX_DV {
RX_ER {
RXD[3:0]
MDIO
MDC
NTR {1:4
MODES
A member of Broadcom’s QuadSquad^TM family of quad Gigabit
Ethernet PHYs, the BCM5466SR consists of four complete 10/100/
1000BASE-T Gigabit Ethernet transceivers integrated on a single
monolithic CMOS chip. The BCM5466SR is optimized for low power
and small footprint size to enable high-port-density applications. The
BCM5466SR enables a new class of cost-effective Gigabit Ethernet
equipment by lowering system cost and reducing power dissipation by
nearly 25%, driving the delivery of Gigabit Ethernet bandwidth to the
desktop.
The BCM5466SR DSP-based architecture and advanced power
management techniques combine to achieve robust and low power
operation over existing Category 5 twisted-pair wiring. The
BCM5466SR architecture not only meets the requirements of
IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab, but maintains the
industry’s highest level of margin over IEEE requirements for echo,
near-end crosstalk (NEXT), and far-end crosstalk (FEXT). Low power is
key to implementing high-density Gigabit switches, and the
BCM5466SR has the lowest power in the industry at less than 750 mW
per port. In addition, the BCM5466SR has extremely low EMI
emissions, which reduces the design constraints required to meet EMI
radiation specifications.
The BCM5466SR supports RGMII, SGMII, and SerDes MAC
interfaces. A unique feature of the BCM5466SR is its ability to support
both copper and fiber networks, with an integrated SerDes PHY interface
that can connect directly to a fiber-optic module. Switching between
copper and fiber media can be accomplished either automatically or
through software control. The BCM5466SR monitors copper link and
fiber signal detect status, and automatically swaps either copper traffic or
fiber traffic to the MAC/switch based on priorities set at initialization.
This device is another member of Broadcom’s 0.13-µm Gigabit Ethernet
copper PHY family, joining more than a dozen other quad and single
products. The 0.13-µm process is the optimal process that offers the best
performance, lowest cost, and lowest power for Gigabit Ethernet copper
solutions. Devices based on the 0.13-µm process offer an excellent long-
term cost curve, enabling better cost reduction over time (compared to
older technologies) without having to redesign or requalify a new part.
Each port of the BCM5466SR is fully independent and has individual
interface, control, and status registers, and incorporates a number of
advanced features. A link-quality indicator LED gives installers an
instant visual indication if there are any problems with the wiring plant
supporting operation at the preferred speed. This includes physical
wiring defects that the BCM5466SR cannot automatically correct for,
and channel conditions such as excessive cable length and return loss,
crosstalk, echo, and noise. Broadcom’s cable analyzer software can be
used with the device to provide remote management of the cable and a
first level of diagnostics and fault isolation.
The BCM5466SR also has ESD tolerance that is well above typical
industry standards. This prevents ESD damage not only during
manufacturing, but also during CESD events in the field. The CESD is
an ESD event that occurs when an electrically charged network cable is
plugged into a network port, which is an issue becoming more prevalent
with recent cable installations. The BCM5466 can tolerate over 3 kV of
CESD.
Broadcom^®, the pulse logo, QuadSquad™, 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.
5466SR-PB00-R 08/12/04
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Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com