BOARDCOM BCM5466SR

BCM5466SR
®
QUAD-PORT GIGABIT ETHERNET COPPER TRANSCEIVER WITH
COPPER/FIBER MEDIA INTERFACE
FEATURES
SUMMARY OF BENEFITS
• Four fully integrated 10BASE-T/100BASE-TX/1000BASE-T
• Low-power quad-port integration enables single-row,
Gigabit Ethernet transceivers
• RGMII, SGMII, and SerDes MAC interface options
• Copper or SerDes line interface options
high-port-density switches.
• Lowers system costs by eliminating PCB layers required for
routing high-density solutions.
• Reduced I/O pin requirements with RGMII (over 50%), SGMII
(over 75%), and SerDes (over 80%).
• Clock timing can be adjusted to eliminate board trace delays
required by the RGMII specification.
• Lowers MAC/switch costs by reducing the number of pins
required to interface with the PHY.
• Flexibility for copper or fiber applications.
• Provides compatibility with IEEE standard devices operating
at 10, 100, and 1000 Mbps at half-duplex and full-duplex.
• Eases system level debug.
• Fully compliant with IEEE 802.3, IEEE 802.3u, and
IEEE 802.3ab standards
• 0.13-micron CMOS—low power and cost
• Low power
• 750 mW per port
• Advanced power management
• Trace matched output impedance
• Line-side loopback
• Low EMI emissions
• Cable plant diagnostics
• Enables use of low-cost magnetics, even in high-density (48+)
• Cable plant analyzer function detects cable plant impairments.
• Link quality indication LED.
• Automatic detection and correction of wiring pair swaps, pair
skew, and pair polarity.
• Automatic MDI/MDIX crossover at all speeds
• Robust cable-sourced electrostatic discharge (CESD) tolerance
• Support for jumbo packets up to 10 kB
• Cable diagnostic function characterizes cable plant condition
designs.
and immediately indicates cabling issues.
• Prevents erroneous equipment return due to bad cable plants
• Prevents manufacturing fallout due to bad cable plants
• Over 3kV of CESD tolerance prevents equipment damage and
return.
• Operates with larger packets for wider range of packet
protocol support and improved efficiency.
• Ease of manufacturing with JTAG support, simplified power
supply, and multiple MAC interfaces.
• IEEE 1149.1 (JTAG) boundary scan
• Package: 256-pin BGA
BCM5466SR System Diagram
BCM5466SR [1/4 SLICE]
SerDes TR±
Optical Mod
SGMII
SerDes
Control
RGMII
Multiplexer
Switch/MAC
(BCM5690,
BCM5695)
Signal Detect
Copper Energy
Detection
Copper
PHY
×4 sets
TRD±
Mag + RJ45
OVERVIEW
TX DAC
Symbol
Encoder
16
16
2
2
2
Automatic
Gain
Control
TRD [0:3] ± {1:4}*
PGA
Echo
Canceler
Crosstalk
Canceler
X3
FFE
DFE/
Trellis
Decoder
ADC
XTALI
XTALO
RDAC {1:2}*
Timing &
Phase
Recovery
Clock
Generator
TX_CLK
SGIN±
SerDes/
SGMII
SCLK±
SGOU
Multiplexer
2
2
Symbol
Decoder/
Aligner
2
2
16
Bias
Generator
MII
Registers
TX_EN {
TX_ER {
GTX_CLK
Multiplexer
2
AutoNegotiation
TXD[3:0]
MII
MGMT
Control
COL {1:4}
CRS {1:4
RX_CLK
RX_DV {
RX_ER {
RXD[3:0]
MDIO
MDC
NTR {1:4
MODES
*{1:4} Refers to the 4 separate Gigabit Ethernet transceivers in the BCM5466R
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 longterm 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
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com