BCM5228_04 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – 10/100BASE-TX/FX HEX-Φ TRANSCEIVER

OVERVIEW
TD+/-
RD+/-
Auto
MDIX
SD+/-
2
RFF_CLK
BIAS
JTAG
5
CRS/Link
Detection
Clock
Generator
Bias
Generator
JTAG
TAP+BS
Multimode
Xmt DAC
Baseline
Wander
Correction
ADC
Digital
Adaptive
Equalizer
10BASE-T
PCS
100BASE-X
PCS
TXD [3:0]
4
TXEN
TXER
TXC
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
Clock
Recovery
DTE Power
Detection
MII
Registrers
MII
Mgmt
Control
MDC
MDIO
The Broadcom BCM5228 is a single-chip device containing eight
independent Fast Ethernet transceivers. Each performs all the physical
layer functions for 100BASE-TX full-duplex or half-duplex Ethernet on
Category 5 UTP cable and 10BASE-T full-duplex or half-duplex
Ethernet on Category 3, 4, or 5 UTP cable.
The BCM5228 chip performs encoding and decoding, clock and data
recovery, digital adaptive equalization, line transmission, carrier sense
and link integrity monitoring, auto-negotiation and RMII/SMII
management functions. The BCM5228 complies with the IEEE 802.3
standard.
The BCM5228 can be connected to a switch controller through the
RMII/SMII on one side and to the network media on the other side
through isolation transformers for UTP modes or fiber-optic transceiver/
receiver components for FX mode. The BCM5228 operates from a 2.5-
V power supply; the I/O operates at either 2.5V or 3.3V.
The BCM5228 includes support for HP Auto-MDIX, which enables the
transceiver to automatically detect and correct miswired cable.
With the HP Auto-MDIX feature, all ports on a switch can be connected
to any other 10/100 port on any switch, hub, or network interface card,
using crossover or straight-through cables interchangeably. This makes
installation, debugging, and maintenance of the network simpler and less
expensive to the end user.
The BCM5227 is a version that does not support HP Auto-MDIX.
The BCM5227 and BCM5228 are offered in three package options. The
BCM5227U and BCM5228U are packaged in a 208-pin PQFP and
support 10/100 operation over UTP, with three LED indicators per port.
The BCM5227F and BCM5228F are packaged in a 208-pin PQFP and
support either 10/100 UTP transmission or 100BASE-FX via external
fiber-optic transceivers, along with one LED indicator per port. The
BCM5227B and BCM5228B are packaged in 256-pin FBGA and
support either UTP or fiber on each port, as well as three LED indicators
per port. All of these products support both RMII and SMII.
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®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2004 by BROADCOM CORPORATION. All rights reserved.
5228-PB06-R
04/08/04
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com