BCM5464
®
QUAD-PORT 10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER
SUMMARY OF BENEFITS
FEATURES
• Four fully integrated 10BASE-T/100BASE-TX/1000BASE-T
Gigabit 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
• 750 mW per port
• Advanced power management
• Trace matched output impedance
• Line-side loopback
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
• Provides compatibility with IEEE standard devices operating
at 10, 100, and 1000 Mbps at at half-duplex 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+)
• Low EMI emissions
• Cable plant diagnostic
designs
• 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: 354-pin BGA
• Low-power, quad-port integration enables single-row, high
• 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 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
BCM5464
BCM5464
BCM5464
10/100/1000BASE-T
Gigabit Ethernet
Transceiver
2x8 RJ-45s
BCM5464
with integrated magnetics
10/100/1000Mbps
Ethernet Switch
BCM5464 System Diagram
OVERVIEW
16
TX DAC
Symbol
Encoder
16
TRD
Gain
Automatic
Control
{1:4}*
PGA
ADC
2
2
2
Echo
Canceller
XTALK
Canceller
X3
FFE
DFE/
Trellis
Decoder
Serdes/
SGMII
Timing &
Phase
Recovery
MUX
Clock
Generator
XTALI
XTALO
TX_CLK {1:4}*
SGIN±
SCLK±
SGOUT±
RDAC {1:2}*
Symbol
Decoder/
Aligner
2
2
2
2
16
Bias
Generator
MII
Registers
TX_ER {1:4}*
GTX_CLK {1:4}*
MUX
2
AutoNegotiation
TXD[7:0] {1:4}*
TX_EN {1:4}*
MII
MGMT
Control
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
*{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. Lowpower 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-µm Gigabit copper
PHY family, joining the BCM5404, BCM5414, BCM5421, BCM5421S,
BCM5424, and BCM5434. The 0.13-µm 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-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 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.
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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
© 2003 by BROADCOM CORPORATION. All rights reserved.
5464-PB07-R
12/11/03
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: [email protected]
Web: www.broadcom.com