BCM5414
PRODUCT
®
Brief
O F
B E N E F I T S
QUAD-PORT GIGABIT COPPER TRANSCEIVER WITH RGMII AND RTBI INTERFACE
B C M 5 4 1 4
F E AT U R E S
S U M M A R Y
Four fully integrated
•
1000BASE-T Gigabit 10BASE-T/100BASE-TX/
Ethernet transceivers
•
RTBI and HSTL level RGMII interface options
Fully compliant with IEEE 802.3, 802.3u, and 802.3ab
•
standards
•
0.13µ CMOS — low power and cost
•
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
• 1.5V or 1.8V HSTL signal levels eliminate the need for 3.3V
power supply, lowering system cost and simplifying design
• 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.
•
Low EMI emissions
logic automatically selects
•
Ethernet@WireSpeed on channel conditions the
maximum speed based
•
Cable plant diagnostic
TM
• 1W per port
• Advanced power management
Provides
•
operatingcompatibility with IEEE standard devices
at 10, 100, and 1000 Mbps at half- and full-
•
Robust CESD tolerance
•
Support for jumbo packets up to 9 KB
•
IEEE 1149.1 (JTAG) boundary scan
• 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
•
•
•
duplex.
Reduces design constraints in high-density
applications that have higher EMI emissions.
Automatically configures the link to support the
highest possible speed based on link partner capability
and characteristics of the channel.
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.
High CESD
•
return. tolerance prevents equipment damage and
Supports jumbo packets
•
protocol compatibility. for wider range of packet
Ease of manufacturing with
•
simplified power supply. JTAG support and
BCM5414 System Diagram
10/100/1000 Mbps
Ethernet Switch
BCM5414
BCM5414
10/100/1000BASE-T
Gigabit Ethernet Transceiver
2x8 RJ-45s
BCM5414
with integrated magnetics
BCM5414
B C M 5 4 1 4
O V E R V I E W
BCM5414 Block Diagram
TX DAC
Symbol
Encoder
MUX
18
16
4
4
TXD[3:0]{4:1}
TX_EN
{4:1}
GTX_CLK
{1:4}
TRD [3:0]+ {1:4}*
Baseline
Wander
Correction
Echo
Canceller
XTALK
Canceller
X3
Symbol
RXC
{4:1}
RX_DV
{4:1}
RXD[3:0]
{4:1}
PGA
ADC
FFE
DFE/
Trellis
Decoder
Decoder/
Aligner
4
4
16
Auto-
Negotiation
XTALI
XTALO
RDAC {2:1}
Clock
Generator
Bias
Generator
Timing &
Phase
Recovery
MII
Registers
MII
MGMT
Control
MDC
MDIO
INTR
{1:4}*
Modes
*{1:4} Refers to the four separate Gigabit transceivers in the BCM5414
The
BCM5414
consists of four complete 10/100/1000BASE-T Gigabit
Ethernet transceivers integrated on a single monolithic CMOS chip. The
BCM5414
is optimized for low power and small footprint size to enable
high port-density applications. By doubling transceiver port density,
lowering system cost, and reducing power dissipation by nearly 50%,
the
BCM5414
enables a new class of cost-effective Gigabit Ethernet
equipment, driving the delivery of Gigabit bandwidth to the desktop.
The
BCM5414’s
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
BCM5414
architecture not only 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 key to implementing high-density Gigabit switches, and at 1W
per port, the
BCM5414
enables twice the density of previous Gigabit
PHY transceivers. In addition, the
BCM5414
has extremely low EMI
emissions, which reduces the design constraints required to meet EMI
radiation specifications.
The
BCM5414
supports the RTBI and HSTL level RGMII interfaces.
The RGMII is a reduced pin-count (12 versus 25) version of the GMII
and RTBI is a reduced pin-count version of TBI utilizing standard
ASIC technology. HSTL level signalling is supported at 1.5V or at
1.8V. Using HSTL level signalling for the RGMII interface eliminates
the need to supply 3.3V to the design, which removes a power supply,
lowers cost, and simplifies the design. 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 or TBI
interfaces.
This device is another member of Broadcom's 0.13µ Gigabit copper
PHY family, joining the BCM5404, BCM5421, BCM5421S, BCM5424
and BCM5434. The 0.13u process is an aggressive process that offers
the best performance, lowest cost, and lowest power for Gigabit copper
solutions. In addition, devices based on this process offer an excellent
long-term cost curve, enabling cost reductions as the price of the 0.13µ
wafers come down, without having to redesign or requalify a new part.
Each port of the
BCM5414
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 desired speed. This includes physical wiring
defects that the
BCM5414
cannot automatically correct for and 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
BCM5414
is fully compatible with the
IEEE 802.3 standard for auto-negotiation of speed, but additionally
supports Ethernet@WireSpeed™. Ethernet@WireSpeed™ allows the
BCM5414
to force auto-negotiation to be automatically limited by the
speed that the channel can reliably support, rather than the performance of
the end equipment.
The
BCM5414
also has ESD tolerance well above typical industry
standards. This prevents ESD damage not only during manufacturing
but during CESD events in the field. Cable-sourced electrostatic
discharge (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 recent cable installations.
Broadcom
®
, the pulse logo, and
Connecting everything
®
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.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2003 by BROADCOM CORPORATION. All rights reserved.
5414-PB01-R 06.25.03
Phone: 949-450-8700
FAX: 949-450-8710
Email: info@broadcom.com
Web: www.broadcom.com
京公网安备 11010802033920号
EEWORLD
