View BCM5424_435214.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

BCM5424
PRODUCT
(R)
Brief
OF BENEFITS
QUAD-PORT GIGABIT COPPER TRANSCEIVER WITH RGMII AND RTBI INTERFACE
BCM5424 FEATURES SUMMARY Four fully integrated * 1000BASE-T Gigabit 10BASE-T/100BASE-TX/ Ethernet transceivers RGMII and RTBI interface options * Fully compliant with IEEE 802.3, 802.3u, and 802.3ab * standards * 0.13 um 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 * 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 *
* Requires no airflow or heatsink. Reduces design high-density * applications thatconstraints in EMI emissions. have higher link to the * Automatically configures the on link support capability highest possible speed based partner
Cable diagnostic function plant * condition and immediatelycharacterizes cableissues. indicates cabling High CESD * return. tolerance prevents equipment damage and Supports jumbo packets * protocol compatibility. for wider range of packet Ease of manufacturing with JTAG support, * power supply, and multiple MAC interfaces.simplified
* Prevents erroneous equipment return due to bad cable plants. * Prevents manufacturing fall-out due to bad cable plants.
duplex.
and characteristics of the channel.
BCM5424 System Diagram
10/100/1000 Mbps
Ethernet Switch
BCM5424
BCM5424 10/100/1000BASE-T
Gigabit Ethernet Transceiver
2x8 RJ-45s
BCM5424
with integrated magnetics
BCM5424
BCM5424
OVERVIEW
BCM5424 Block Diagram
Symbol Encoder
18
TX DAC
MUX
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
AutoNegotiation 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 BCM5424
The BCM5424 consists of four complete 10/100/1000BASE-T Gigabit Ethernet transceivers integrated on a single monolithic CMOS chip. The BCM5424 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 BCM5424 enables a new class of cost-effective Gigabit Ethernet equipment, driving the delivery of Gigabit bandwidth to the desktop. The BCM5424'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 BCM5424 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 BCM5424 enables twice the density of previous Gigabit PHY transceivers. In addition, the BCM5424 has extremely low EMI emissions, which reduces the design constraints required to meet EMI radiation specifications. The BCM5424 supports the RGMII and RTBI 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. 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 0.13u Gigabit copper PHY family, joining the BCM5404, BCM5421, BCM5421S 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 0.13m wafers come down, without having to redesign or requalify a new part. Each port of the BCM5424 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 BCM5424 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 BCM5424 is fully compatible with the IEEE 802.3 standard for auto-negotiation of speed, but additionally supports Ethernet@WireSpeedTM. Ethernet@WireSpeedTM allows the BCM5424 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 BCM5424 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(R), the pulse logo, and Connecting everything(R) 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.
(R)
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 2003 by BROADCOM CORPORATION. All rights reserved. 5424-PB01-R 06.25.03
Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com

▲Up To Search▲

Price & Availability of BCM5424

	To Download BCM5424 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .