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BCM5464
PRODUCT
(R)
Brief
OF BENEFITS
QUAD-PORT 10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER
BCM5464 FEATURES SUMMARY Four fully integrated * 1000BASE-T Gigabit 10BASE-T/100BASE-TX/ Ethernet transceivers * GMII, RGMII, SGMII, and SerDes MAC interface options * 1-Gbps line-side SerDes with GMII/RGMII MAC interface Fully compliant with IEEE 802.3, 802.3u, and 802.3ab * standards * 0.13-micron CMOS--low-power and cost * Supports copper or fiber in GMII and RGMII modes * Low-power 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 to the PHY
* Trace matched output impedance * Line-side loopback * Low EMI emissions * Cable plant diagnostic
* 750 mW per port * Advanced power management
Provides * operatingcompatibility with IEEE standard devices at 10, 100, and 1000 Mbps at at half-duplex
* Robust cable-sourced electrostatic discharge (CESD) tolerance * Support for jumbo packets up to 10 KB * IEEE 1149.1 (JTAG) boundary scan * Package: 354-pin BGA
* 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
* * * * *
and full-duplex Requires no airflow or heatsink Lowers system BOM cost and simplifies system design Eases system level debug Enables use of low cost magnetics, even in high density (48+) designs Cable diagnostic function characterizes cable plant condition and immediately indicates cabling issues
* Prevents erroneous equipment return due to bad cable plants * Prevents manufacturing fall-out due to bad cable plants
Over 4 CESD * damagekV ofreturn tolerance prevents equipment and Operates with larger wider range * protocol support and packets forefficiency of packet improved Ease of manufacturing with JTAG support, * power supply, and multiple MAC interfaces simplified
BCM5464 System Diagram
10/100/1000Mbps Ethernet Switch
BCM5464 BCM5464 BCM5464 BCM5464 10/100/1000BASE-T
Gigabit Ethernet Transceiver
BROADCOM PROPRIETARY & CONFIDENTIAL
with integrated magnetics
2x8 RJ-45s
BCM5464
OVERVIEW
BCM5464 Block Diagram
16 TX DAC 16 Symbol Encoder Echo Canceller XTALK Canceller X3 2 2 2 MUX TXD[7:0] {1:4}* TX_EN {1:4}* TX_ER {1:4}* GTX_CLK {1:4}* TX_CLK {1:4}*
TRD
{1:4}*
Gain Automatic Control
PGA
ADC
FFE
DFE/ Trellis Decoder
Serdes/ SGMII
SGIN SCLK SGOUT
2 COL {1:4}* CRS {1:4}* RX_CLK {1:4}* RX_DV {1:4}* RX_ER {1:4}* RXD[7:0] {1:4}* MDIO MDC NTR {1:4}* MODES
AutoNegotiation XTALI XTALO RDAC {1:2}* Clock Generator Bias Generator
Timing & Phase Recovery
MUX Symbol Decoder/ Aligner
2 2 2 2 16
MII Registers
MII MGMT Control
*{1:4} Refers to the 4 separate Gigabit transceivers in the BCM5464
The BCM5464 consists of four complete 10/100/1000BASE-T Gigabit Ethernet transceivers integrated on a single monolithic CMOS chip, and is a member of Broadcom's QuadSquadTM family of quad Gigabit Ethernet PHYs. The BCM5464 is optimized for low-power and small footprint size to enable high port density applications. The BCM5464 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 bandwidth to the desktop. The BCM5464's digital signal processor based architecture and advanced power management techniques combine to achieve robust and low-power operation over the existing Category 5 twisted-pair wiring. The BCM5464 architecture not only meets the requirements of IEEE's 802.3, 802.3u, and 802.3ab, but maintains the industry's highest level of margin over IEEE requirements for echo, NEXT, and FEXT. Low-power is key to implementing high-density Gigabit switches, and the BCM5464 has the lowest power in the industry at 750 mW per port. In addition, the BCM5464 has extremely low EMI emissions, which reduces the design constraints required to meet EMI radiation specifications. The BCM5464 supports the GMII, RGMII, SGMII, and SerDes MAC interfaces. The RGMII, SGMII, and Serial SerDes 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 pin count 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 copper PHY family, joining the BCM5404, BCM5414, BCM5421, BCM5421S, BCM5424, and BCM5434. The 0.13-m process is the optimal process that offers the best performance, lowest cost, and lowest power for Gigabit copper solutions. Devices based on the 0.13-m 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 BCM5464 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 BCM5464 cannot automatically correct for, 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 BCM5464 also has ESD tolerance well above typical industry standards. This prevents ESD damage not only during manufacturing but 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 BCM5464 can tolerate over 4 kV of CESD.
Broadcom(R), the pulse logo, Connecting everything(R), and QuadSquadTM are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks are the property of their respective owners.
(R)
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 2003 by BROADCOM CORPORATION. All rights reserved. 5464-PB06-R-06-13-03
Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com
BROADCOM PROPRIETARY & CONFIDENTIAL

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