BCM54610
®
10/100/1000BASE-T GIGABIT COPPER TRANSCEIVER
FEATURES
•
Fully integrated 10BASE-T/100BASE-TX/1000BASE-T Gigabit
Ethernet (GbE) transceiver
•
RGMII MAC interface options
•
On-chip low-voltage regulator
•
Fully compliant with IEEE 802.3™, 802.3u, and 802.3ab
standards
•
65-nm CMOS—low power and cost
•
Low power
•
Less than 500 mW per port
•
Advanced power management
•
Trace matched output impedance
•
Line-side loopback
•
Low electromagnetic interference (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 CESD tolerance
•
Support for jumbo packets up to 10 KB
•
IEEE 1149.1 (JTAG) boundary scan
•
48-pin MLP and 100-pin FBGA packages
Transformer
RJ-45
RJ-45
SUMMARY OF BENEFITS
•
Simplifies system and board design
•
Reduced I/O pin requirements with RGMII
•
On-chip RGMII timing delay
•
Provides interoperability with IEEE standard devices
operating at 10 Mbps, 100 Mbps, and 1000 Mbps at half- and
full-duplex
•
Lowers system bill of materials (BOM) cost and simplifies
system design
•
Requires no airflow or heatsink
•
Eases system-level debug
•
Reduces system design constraints to meet EMI emissions
standards
•
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
•
High 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
BCM54610
Transformer
MAC
BCM54610
RJ-45
24FE+2G
Switch
BCM54610
BCM5248
Octal
10/100 Mbps PHY
BCM5248
Octal
10/100 Mbps PHY
BCM5248
Octal
10/100 Mbps PHY
General Gigabit Ethernet Connectivity
1000BASE-T Gigabit Uplink
Transformer
BCM5645
OVERVIEW
8
TXDAC
Symbol
Encoder
TXD[3:0]
TX_EN
GTX_CLK
Baseline
Wander
Correction
Echo
Canceller
XTALK
Canceller
x3
PGA
ADC
FFE
DEF/
Trellis
Decoder
Symbol
Decoder/
Aligner
CLK125
RXC
RX_DV
RXD[3:0]
Auto-
Negotiation
Clock
Generator
Bias
Generator
MII
Registers
Voltage
Regulator
Timing &
Phase
Recovery
LED
Drivers
LED1
LED2
LED3
LED4
RDAC
MII
Management
Control
MDC
MDIO
BCM54610 Reference Design
The BCM54610 is optimized for low power and small footprint size to
enable uplink and general GbE connectivity applications. By lowering
system cost and reducing power dissipation, the BCM54610 enables a
new class of cost-effective GbE equipment, driving the delivery of
Gigabit bandwidth to the desktop.
The BCM54610 digital signal processor-based architecture and
advanced power management techniques combine to achieve robust and
low power operation over the existing CAT-5 twisted-pair wiring. The
BCM54610 architecture also meets the requirements of 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 a key
factor in implementing Gigabit small form factor NICs and uplinks, and,
at less than 500 mW per port, the BCM54610 has the industry's lowest
power. Additionally, the BCM54610 has extremely low EMI emissions,
which reduces the design constraints required to meet EMI emissions
specifications.
The BCM54610 supports the IEEE 802.3 standard Reduced Gigabit
Media Independent Interface (RGMII). RGMII is a reduced pin-count
(12 versus 25) version of the Gigabit Media Independent Interface
(GMII). The small package, multiple MAC interfaces, and streamlined
power supply lower system cost and simplify the system and board level
design.
This device is another member of the Broadcom 65-nm Gigabit copper
PHY family, joining the BCM54680. The optimal 65-nm process offers
the best performance, lowest cost, and lowest power for Gigabit copper
solutions. Further, devices based on the 65-nm 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.
The BCM54610 incorporates a variety of advanced features. The link
quality indicator LED provides installers with immediate visual
notification of any problems with the wiring plant supporting operation
at the desired speed. This includes physical wiring defects that the
BCM54610 cannot automatically correct and channel conditions such as
excessive cable length and return loss, crosstalk, echo, and noise.
Broadcom cable analyzer software can be used with the device to
provide remote management of the cable and first-level diagnostics and
fault isolation.
The BCM54610 also has ESD tolerance that exceeds typical industry
standards. This feature not only prevents ESD damage during
manufacturing but also during cable-sourced electrostatic discharge
(CESD) events in the field. CESD is an ESD event that occurs when an
electrically charged network cable is plugged into a network port, an
issue becoming more prevalent with contemporary cable installations.
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
5300 California Avenue,
Irvine, California 92617
© 2008 by BROADCOM CORPORATION. All rights reserved.
54610-PB00-R
01/16/08
Phone: 949-926-5000
Fax: 949-926-5203
E-mail: info@broadcom.com
Web: www.broadcom.com
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