BCM5226 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – 10/100 BASE TX/FX HEX TRANSCEIVER

BCM5226 OVERVIEW
TD+/-
RD+/-
Auto
MDIX
Multimode
Xmt DAC
Baseline
Wander
Correction
ADC
SD+/-
2
CRS/Link
Detection
Digital
Adaptive
Equalizer
TXD [3:0]
4
TXEN
TXER
10BASE-T
PCS
TXC
100BASE-X
PCS
COL
RXC
CRS
RXDV
RXER
RXD[3:0]
4
MII to
RMII
or
SMII
Auto-
Negotiation/
Link Integrity
TXD [1:0]
12
TXEN
REF_CLK
CRS_DV
RX_ER
RXD[1:0]
2
RFF_CLK
BIAS
JTAG
5
Clock
Generator
Bias
Generator
JTAG
TAP+BS
Clock
Recovery
MII
Registrers
MII
Mgmt
Control
MDC
MDIO
The Broadcom^® BCM5226 is a single-chip device containing six
independent Fast Ethernet transceivers. Each performs all the
physical layer interface functions for 100BASE-TX full-duplex
or half-duplex Ethernet on Category 5 twisted-pair cable and
10BASE-T full or half-duplex Ethernet on Category 3, 4 or 5
cable. Each port may also be configured for 100BASE-FX full or
half-duplex transmission over fiber-optic cabling when paired
with an external fiber-optic line transceiver.
The BCM5226 chip performs 4B5B, MLT3, NRZI, and
Manchester encoding and decoding, clock and data recovery,
stream cipher scrambling/descrambling, digital adaptive
equalization, line transmission, carrier sense and link integrity
monitoring, auto-negotiation and RMII management functions.
The BCM5226 can be connected to a switch controller through
the RMII on one side and connects directly to the network media
on the other side through isolation transformers for UTP modes
or fiber-optic transceiver components for FX mode. The
BCM5226 is compliant with the IEEE 802.3 standard.
The BCM5226 operates from a 2.5V power supply, which
dramatically lowers total power consumption compared to 3.3V
and 5V designs. The BCM5226 I/O operates at either 2.5V or
3.3V, for compatibility with 3.3V designs.
The BCM5226 is the first 10/100 Ethernet transceiver to
incorporate the Hewlett-Packard auto-Media Dependent
Interface Crossover (Auto-MDIX) feature. Originally specified
in the IEEE 802.3ab Gigabit Ethernet standard for Category 5
cable, the Auto-MDIX feature enables the transceiver to
automatically detect and correct a crossed cable. This allows
system installation and maintenance personnel to use crossover
or straight-through cables interchangeably, regardless of whether
the cable is attached to another switch, network interface card or
repeater. This capability eliminates incorrect connections due to
cable mismatch, making it easier and less expensive to install and
operate 10/100 Ethernet switches.
The BCM5226R supports RMII, and is available in a 160-pin
plastic quad flatpack package (PQFP); the BCM5226R supports
SMII, and is available in a 128-pin PQFP.
Broadcom^®, the pulse logo, HEX-Φ, Digi-Φ 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.
5226-PB05-R-04-15-03
Phone: [phone]
FAX: [phone]
Email: [e-mail]
Web: www.broadcom.com