BCM5464R
®
QUAD-PORT 10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER
FEATURES
SUMMARY OF BENEFITS
•
Four fully-integrated 10BASE-T/100BASE-TX/1000BASE-T
Gigabit Ethernet transceivers
•
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.
•
RGMII, SGMII, and SerDes MAC interface options
•
1-Gbps line-side SerDes with 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 RGMII mode
•
Low power
- 750 mW per port
- Advanced power management
•
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+)
designs.
•
Trace matched output impedance
•
Line-side loopback
•
Low EMI emissions
•
Cable plant diagnostic
- 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
•
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.
•
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
•
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.
BCM5464R System Diagram
BCM5464R
10/100/1000
Mbps
Ethernet
Switch
10/100/1000BASE-T
Gigabit Ethernet
Transceiver
BCM5464R
10/100/1000BASE-T
Gigabit Ethernet
Transceiver
2x8
RJ-45s
with
Integrated
Magnetics
BCM5464R
10/100/1000BASE-T
Gigabit Ethernet
Transceiver
BCM5464R
10/100/1000BASE-T
Gigabit Ethernet
Transceiver
OVERVIEW
BCM5464R
16
TX DAC
Symbol
Encoder
16
2
2
2
MUX
TXD[3:0] {1:4}*
TX_EN {1:4}*
TX_ER {1:4}*
GTX_CLK {1:4}*
TX_CLK {1:4}*
TRD [0:3]± {1:4}*
Gain
Automatic
Control
Echo
Canceller
XTALK
Canceller
X3
SGIN±
SerDes/
SGSMII
SCLK±
SGOUT±
2
PGA
ADC
FFE
DFE/
Trellis
Decoder
COL {1:4}*
CRS {1:4}*
RX_CLK {1:4}*
RX_DV {1:4}*
RX_ER {1:4}*
RXD[3:0] {1:4}*
2
MUX
2
2
2
16
Auto-
Negotiation
XTALI
XTALO
RDAC {1:2}*
Timing &
Phase
Recovery
Symbol
Decoder/
Aligner
Clock
Generator
Bias
Generator
MII
Registers
MII
MGMT
Control
MDIO
MDC
NTR {1:4}*
Modes
BCM5464R Reference Design
The BCM5464R 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 QuadSquad™ family of quad Gigabit Ethernet
PHYs. The BCM5464R is optimized for low-power and small footprint
size to enable high port density applications. The BCM5464R 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 BCM5464R’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
BCM5464R architecture not only meets the requirements of IEEE’s 802.3,
802.3u, and 802.3ab standards, 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 BCM5464R
has the lowest power in the industry at 750 mW per port. In addition, the
BCM5464R has extremely low EMI emissions, which reduces the design
constraints required to meet EMI radiation specifications.
The BCM5464R supports the 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 more than a dozen other quad-port and single-port
PHY products. 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 requiring the redesign or requalification of a new part.
Each BCM5464R 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 BCM5464R cannot automatically correct. This includes 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 BCM5464R 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.
This issue is becoming more prevalent with contemporary cable
installations. The BCM5464R tolerates over 4 kV of CESD.
Broadcom
®
, the pulse logo,
Connecting everything
®
, and the Connecting everything logo are among
the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries
and/or the EU. Any other trademarks or trade names mentioned are the property of their respective
owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2007 by BROADCOM CORPORATION. All rights reserved.
5464R-PB02-R
01/15/07
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
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