bcm5208r Broadcom Corp., bcm5208r Datasheet - Page 2

• Manufacturer Part Number: bcm5208r
• Description: Bcm5208r - 10/100base-tx/fx Transceiver
• Manufacturer: Broadcom Corp.

The BCM5208R is a monolithic CMOS integrated circuit containing 4
transceivers that each perform all of the physical layer interface
functions for 10BASE-T Ethernet on Category 3, 4, 5 unshielded
twisted-pair (UTP) cable and 100BASE-TX Ethernet on Category 5 UTP
cable.
The BCM5208R employs the use of digital signal processing and full
custom circuit design techniques to create a highly integrated and robust
physical layer solution for Fast Ethernet switches. It complies fully with
the IEEE 802.3u physical layer Media Independent Interface (MII) and
auto-negotiation subsections, providing compatibility with all industry-
standard Fast Ethernet MAC chips.
Broadcom
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.
5208R-PB03-R
®
, the pulse logo, and Connecting everything
RD+/-{1:4}
TD+/-{1:4}
04/01/04
JTAG
CK25
BIAS
8
3
5
8
®
S/H
Generator
Generator
Detection
CRS/Link
TAP+BS
Clock
JTAG
Bias
Multimode
TX DAC
Correction
®
Baseline
Wander
are trademarks of Broadcom Corporation and/
ADC
Recovery
O V E R V I E W
Clock
Equalizer
Adaptive
Digital
Link Integrity
Negotiation/
The BCM5208R chip performs all the 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 management functions. The
BCM5208R can be connected to a MAC through the MII on one side,
and directly to the network media on the other side (through isolation
transformers for UTP mode).
The BCM5208R is an easy cost-reduction path for 10/100 systems
originally designed with the BCM5208. The BCM5208R is a lower
power, lower cost alternative that can drop into most BCM5208 designs
without any hardware change.
Registers
Auto-
MII
100BASE-T
10BASE-T
PCS
PCS
Drivers
Control
LED
Mgmt
MII
4
4
4
4
4
4
20
16
4
4
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com
4
4
4
16
4
4
TXD[3:0] {1:4}
TXEN {1:4}
TXER{1:4}
TXC
COL/RXEN {1:4}
RXC {1:4}
CRS {1:4}
RXDV {1:4}
RXER {1:4}
RXD[3:0] {1:4}
LNKLED {1:4}
COLLED {1:4}
100LED {1:4}
FDXLED {1:4}
XMTLED {1:4}
RCVLED {1:4}
MODES
MDC
MDIO