BCM5238_04 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – 10/100BASE-TX OCTAL-Φ TRANSCEIVER

OVERVIEW
TD+/-
RD+/-
RFF_CLK
BIAS
JTAG
Auto-MDIX
Clock
Generator
Bias
Generator
JTAG
5
TAP+BS
Multimode
Xmt DAC
ADC
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
SMII
Auto-
Negotiation/
Link Integrity
Clock
Recovery
DTE Power
Detection
LED
Controller
TXD{1:8}
8
SSYNC
SSMII_TXC
SSMII_RSYNC
SSMII_RXC
RXD{1:8}
8
INTR/SLED_DO
LED1{1:8}
2
LED2{1:8}
2
S3MII_DIS/SLED_CLK
MII
Registrers
MII
Mgmt
Control
MDC
MDIO
The Broadcom BCM5238 is a single-chip device containing eight
independent Fast Ethernet transceivers. Each performs all the physical
layer functions for 100BASE-TX full- or half-duplex Ethernet on
Category 5 UTP cable and 10BASE-T full- or half-duplex Ethernet on
Category 3, 4, or 5 UTP cable. The BCM5238 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 BCM5238 is
compliant with the IEEE 802.3 standard.
The BCM5238 can be connected to a switch controller through the SMII
or SSSMII on one side and to the network media on the other side
through isolation transformers. The BCM5238 operates from 1.8 and
2.5V/3.3V power supplies; the I/O operates at either 2.5V or 3.3V.
The BCM5238 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 BCM5238 is offered in a 128-pin PQFP or 256-ball BGA package
and supports two LED indicators per port.
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 mentioned are the
property of their respective owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2004 by BROADCOM CORPORATION. All rights reserved.
5238-PB07-R
07/19/04
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com