BCM5466R
®
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 an RGMII MAC interface
Fully compliant with IEEE 802.3, IEEE 802.3u, and IEEE 802.3ab
standards
0.13-micron CMOS for low power consumption and low cost
Supports copper or fiber operation in RGMII mode
Low power
- 750 mW per port
- Advanced power management
Trace-matched output impedance
Line-side loopback
Ethernet@Wirespeed™ support
Low EMI emissions
CableChecker™ diagnostics
- CableChecker software 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 of up to 10 kB
IEEE 1149.1 (JTAG) boundary scan
256-pin BGA package
BCM5466R System Diagram
BCM5466R
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.
- Reduces I/O pin requirements with RGMII (over 50%), SGMII
(over 75%), and SerDes (over 80%).
- Supports clock timing adjustment 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.
Ethernet@Wirespeed controls auto-negotiation advertising to enable
link establishment at lower speeds when a 1000BASE link fails to be
established.
Enables use of low-cost magnetics, even in high-density (48+ port)
designs.
Eases system level debugging.
CableChecker software characterizes cable plant condition and
immediately indicates cabling issues.
- P
revents 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.
•
•
•
•
•
•
•
•
•
•
•
•
•
10/100/1000
Mbps
Ethernet
Switch
10/100/1000BASE-T
Gigabit Ethernet
Transceiver
BCM5466R
10/100/1000BASE-T
Gigabit Ethernet
Transceiver
2x8
RJ-45s
with
Integrated
Magnetics
BCM5466R
10/100/1000BASE-T
Gigabit Ethernet
Transceiver
BCM5466R
10/100/1000BASE-T
Gigabit Ethernet
Transceiver
OVERVIEW
BCM5466R
TX DAC
XTALK
Canceller
Baseline
Wander
Correction
Symbol
Encoder
GTXCLK {4:1}
TXD [3:0]{4:1}
TX_EN {4:1}
SCLK(1) {4:1}±
TRD [3:0{4:1}±
Echo
Canceller
DFE/
Trellis
Decoder
Serial/
SGMII
SGOUT(1) {4:1}±
SGIN(1) {4:1}±
FFE
PGA
ADC
Timing &
Phase
Recovery
Symbol
Decoder/
Aligner
RXD [3:0]{4:1}
RXC {4:1}
RX_DV {4:1}
Auto-
Negotiation
XTALI
XTALO
LED
Drivers
MII
MGMT
Control
LED [4:1]{4:1}
Clock
Generator
Bias
Generator
MII
Registers
MDC [4:1]
MDIO [4:1]
RDAC
Modes
REGSUP [2:1]
REGCNTL [2:1]
REGSEN [2:1]
Voltage
Regulator
BCM5466R Reference Design
The BCM5466R is a member of Broadcom’s QuadSquad™ family of quad
fewer pins at the MAC/switch, which reduces MAC/switch cost by
Gigabit Ethernet PHYs. It consists of four complete 10/100/1000BASE-T
enabling smaller die sizes than would be possible with full GMII
Gigabit Ethernet transceivers integrated on a single monolithic CMOS
implementation.
chip. The BCM5466R is optimized for low power and small footprint size
The BCM5466R is another member of Broadcom’s 0.13-µm Gigabit
to enable high-port-density applications. The BCM5466R enables a new
Ethernet copper PHY family, joining more than a dozen other quad and
class of cost-effective Gigabit Ethernet equipment by lowering system cost
single products. The 0.13-µm process is the optimal process that offers the
and reducing power dissipation by nearly 25 percent, driving the delivery
best performance, lowest cost, and lowest power for Gigabit Ethernet
of Gigabit Ethernet bandwidth to the desktop.
copper solutions. Devices based on the 0.13-µm process offer an excellent
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 the IEEE 802.3, IEEE
802.3u, and IEEE 802.3ab specifications, but also 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 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 interfaces 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
long-term 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 wiring plant problems 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
CableChecker software provides remote management of the cable and first
level diagnostics and fault isolation.
The BCM5466R also has ESD tolerance well above typical industry
standards. This prevents ESD damage not only during manufacturing, but
also during CESD events in the field 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 3 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
© 2006 by BROADCOM CORPORATION. All rights reserved.
5466R-PB02-R
04/17/06
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com
MicroPython Open Source section
京公网安备 11010802033920号
EEWORLD
