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BCM5466R
(R)
QUAD-PORT 10/100/1000BASE-T GIGABIT ETHERNET TRANSCEIVER
FEATURES * Four fully integrated 10BASE-T/100BASE-TX/1000BASE-T
Gigabit Ethernet transceivers * RGMII, SGMII, and SerDes MAC interface options * 1-Gbps line-side SerDes with RGMII MAC interface
SUMMARY OF BENEFITS * Low-power, quad-port integration enables single-row,
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. * Provides compatibility with IEEE standard devices operating at 10, 100, and 1000 Mbps at half-duplex and full-duplex. * Lowers system BOM cost and simplifies system design.
* Fully compliant with IEEE 802.3, IEEE 802.3u, and
IEEE 802.3ab standards
* 0.13-micron CMOS--low power and cost * Supports copper or fiber in RGMII mode * Low power
* 750 mW per port * Advanced power management * Trace-matched output impedance * Line-side loopback
* Eases system level debug. * Enables use of low-cost magnetics, even in high-density (48+) *
* Low EMI emissions * Cable plant diagnostics
* 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
* * *
* IEEE 1149.1 (JTAG) boundary scan * Package: 256-pin BGA
designs. Cable diagnostic function characterizes cable plant condition and immediately indicates cabling issues. * Prevents erroneous equipment return due to bad cable plants. * Prevents manufacturing fallout due to bad cable plants. Over 3 kV 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.
BCM5466R System Diagram
BCM5466R
10/100/1000 Mbps Ethernet Switch
BCM5466R BCM5466R BCM5466R 10/100/1000BASE-T
Gigabit Ethernet Transceiver
with integrated magnetics
2x8 RJ-45s
OVERVIEW
TX DAC
16
Symbol Encoder
16 2 2 2
TXD[3:0] TX_EN { TX_ER { GTX_CLK TX_CLK
TRD [0:3] {1:4}*
Automatic Gain Control
Echo Canceler
Crosstalk Canceler X3
Multiplexer SGIN SCLK SGOU
PGA
ADC
FFE
DFE/ Trellis Decoder
SerDes/ SGMII
2
AutoNegotiation Clock Generator Bias Generator Timing & Phase Recovery Multiplexer Symbol Decoder/ Aligner
COL {1:4} CRS {1:4 RX_CLK RX_DV { RX_ER { RXD[3:0]
2 2 2 2 16
XTALI XTALO RDAC {1:2}*
MII Registers
MII MGMT Control
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 BCM5466R consists of four complete 10/100/ 1000BASE-T Gigabit Ethernet transceivers integrated on a single monolithic CMOS chip. The BCM5466R is optimized for low power and small footprint size to enable high-port-density applications. The BCM5466R enables a new class of cost-effective Gigabit Ethernet equipment by lowering system cost and reducing power dissipation by nearly 25 percent, driving the delivery of Gigabit Ethernet bandwidth to the desktop. The BCM5466R DSP-based architecture and advanced power management techniques combine to achieve robust and low-power operation over existing Category 5 twisted-pair wiring. The BCM5466R architecture not only meets the requirements of IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab, but also maintains the industry's highest level of margin over IEEE requirements for echo, near-end crosstalk (NEXT), and far-end crosstalk (FEX)T. Low power is key to implementing high-density Gigabit Ethernet switches, and the BCM5466R has the lowest power in the industry at 750 mW per port. In addition, the BCM5466R has extremely low EMI emissions, which reduces the design constraints required to meet EMI radiation specifications. The BCM5466R supports the RGMII, SGMII, and SerDes MAC interfaces. The RGMII, SGMII, and serial SerDes inteerfaces are reduced-pin-count (12, 6, and 4, respectively, versus 25) versions of the GMII. The RGMII clock timing can be adjusted to eliminate the board trace delays required by the RGMII specification. These reduced-pincount interfaces simplify design and lower system cost by reducing the number of layers required to route high-density solutions. In addition,
these interfaces allow fewer pins at the MAC/switch, which reduces the MAC/switch cost by enabling smaller die sizes than would be possible with full GMII. This device is another member of Broadcom's 0.13-m Gigabit Ethernet copper PHY family, joining more than a dozen other quad and single products. The 0.13-m 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-m 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 BCM5466R port 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 BCM5466R 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 BCM5466R 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. This is an issue becoming more prevalent with contemporary cable installations. The BCM5466R can tolerate over 3kV of CESD.
Broadcom(R), the pulse logo, QuadSquadTM, and Connecting everything(R) 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.
(R)
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 2004 by BROADCOM CORPORATION. All rights reserved. 5466R-PB00-R 08/11/04
Phone: 949-450-8700 Fax: 949-450-8710 E-mail: info@broadcom.com Web: www.broadcom.com

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