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Broadcom BCM5380M Datasheet
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Broadcom BCM5380M Datasheet Integrated 10/100/1000BASE-T/TX 9+2 Switch
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DATA SHEET
BCM5380M
5380M-DS04-R
16215 Alton Parkway • P.O. Box 57013 • Irvine, California 92619-7013 • Phone: 949-450-8700 •Fax: 949-450-8710 03/07/03
Integrated 10/100/1000BASE-T/TX 9+2 Switch
Figure 1: Functional Block Diagram
G
ENERAL DESCRIPTION
Through the expansion port, up to 3 BCM5380M devices
can be cascaded together to implement 24+2 systems
providing full wire speed capabilities.
Even though the BCM5380M device is primarily targeted
for the cost sensitive unmanaged market, very low cost
management can be provided utilizing the proprietary
MIB Autocast
TM
function. This function requires only a
small low cost microcontroller to initialize and configure
the device.
The BCM5380M is a nine-port, 10/100BASE-T/TX with
two-port 10/100/1000BASE-T integrated non-blocking
switch controller targeted at cost-sensitive Fast Ethernet
and Gigabit Ethernet systems. The device contains eight
full-duplex 10BASE-T/100BASE-TX Fast Ethernet
transceivers, each of which performs all of the physical
layer interface functions for 10BASE-T Ethernet on CAT
3, 4 or 5 unshielded twisted pair (UTP) cable and
100BASE-TX Fast Ethernet on CAT 5 UTP cable. In
addition, an integrated 10/100/1000BASE-T transceiver
provides gigabit speeds across CAT 5 UTP cable.
The BCM5380M device provides a very highly integrated
solution. It combines all of the functions of a high speed
switch system, including packet buffer, transceivers,
media access controllers, address management and a
non-blocking switch controller, into a single monolithic
0.13um CMOS device. It complies with the IEEE 802.3,
802.3u, 802.3ab and 802.3x specifications, including the
MAC control PAUSE frame and Auto-Negotiation
subsections, providing compatibility with all industry-
standard Ethernet, Fast Ethernet and Gigabit Ethernet
devices.
F
EATURES
• 256 KB on-chip Packet Buffer
• Nine-port 10/100 Mbps integrated switch controller
• Two-port 10/100/1000 Mbps integrated switch
controller
• Eight integrated 10/100BASE-T/TX IEEE 802.3u
Compliant Transceivers with Auto-MDIX support
• Ninth MII port provided for an additional TX/FX
uplink or enhanced RvMII timing for direct MAC to
MAC connection
• Integrated Full-Duplex Capable 802.3x Compliant
Media Access Controller
Address
Management
LED
Controller
10/100
10BASE-T/
100BASE-TX
Transceiver
Bias
RDAC
MDC
MDIO
TD+/-[1:8]
RD+/-[1:8]
TXD[3:0]
TXEN
TXC
RXD[3:0]
RXDV
LEDCLK
LEDDATA
LED[1:11]A
LED[1:11]B
LED[1:11]C
Global
Functions
JTAG
6
FREFP, FREFN
RST
/TRST
MIB
Counters
Serial
Management
GMAC/
RXC
MOSI
MISO
SS
SCK
256 KB
TXER
RXER
CRS
COL
TRD[3:0]+/-
Expansion
Port
10/100/1000 PHY
10/100
MAC
GTXCLK
MAC
SerDes
SER_TXP/N
SER_RXP/N
GTXD[7:0]/TXD[3:0]
GTX_EN/TX_EN
TXCLK
GRXD[7:0]/RXD[3:0]
GRXDV/RXDV
GRXC/RXC
GTX_ER/TX_ER
GRXER/RXER
GCRS/CRS
GCOL/COL
(reverse MII
supported)
GMAC/MAC
mux
MAC
EN_FIBER_GPORT1
LED[10:11]D
4
GRDAC
128KB
Control Memory
Packet Buffer
802.1Q VLAN
MAC Based
Trunking
2
BCM5380M Data Sheet
03/07/03
Broadcom Corporation
Page ii Document 5380M-DS04-R
F
EATURES
(CONTINUED)
A
PPLICATIONS
• One integrated 10/100/1000BASE-T/TX IEEE
802.3ab Compliant transceiver with Auto-MDIX
support
• Integrated Full-Duplex Capable 802.3x Compliant
gigabit Ethernet Media Access Controllers
supporting MII/GMII/SerDes interfaces
• One integrated 1G SerDes module
• Expansion bus supporting systems up to 24+2 non-
blocking configurations (or up to 27+6 with blocking)
• Supports external fiber connections
• Integrated Address Management
• Supports up to 4K unicast/multicast addresses
• Integrated Serial Management Port (SMP)
• Provides access to all integrated per-port MIB
counters, running up to 2 Mbps
• Allows configuration and control of Auto-Negotiation
registers and Spanning Tree port state
• Allows EEPROM connection for low cost
configuration
• Integrated MIB counters allow fully compliant
statistics gathering
• EtherLike MIB, Bridge MIB, MIB II Interfaces
• Four groups of RMON MIB (Groups 1, 2, 3, 9)
• 802.1d Spanning Tree protocol supported
• Allows further management capabilities
• Port mirroring and Port snooping
• Port-based VLAN and Trunking
• 802.1Q tag-based VLAN
• Supports 802.1x EAPOL
• MAC-based automatic trunk fail-over
• IGMP Snooping
• Port, 802.1p, and MAC based QoS for two queues
• IEEE 1149.1 (JTAG)
• Low-power 2.5V / 1.2V, 0.13 µm CMOS Technology
The BCM5380M supports various managed system
applications in either non-blocking or slightly blocking
configurations:
• Non-blocking configurations:
-8 + 2
-16 + 2
-24 + 2
• Slightly blocking configurations:
-24 + 3
-24 + 6
-48 + 4
Data Sheet BCM5380M
03/07/03
Broadcom Corporation
Document 5380M-DS04-R Page iii
REVISION HISTORY
Revision Date Change Description
5380M-DS04-R 03/07/03 Fourth full release.
5380M-DS03-R 02/28/03 Third full release.
5380M-DS02-R 12/09/02 Second full release.
5380M-DS01-R 06/07/02 First full release.
5380M-DS00-R 04/19/02 Initial release.
Broadcom Corporation
P.O. Box 57013
16215 Alton Parkway
Irvine, California 92619-7013
© 2003 by Broadcom Corporation
All rights reserved
Printed in the U.S.A.
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 are the property of their respective owners.
Data Sheet BCM5380M
03/07/03
Broadcom Corporation
Document 5380M-DS04-R Page v
TABLE OF CONTENTS
Section 1: Functional Description......................................................................................1
Overview ....................................................................................................................................................... 1
Global Functions.......................................................................................................................................... 2
Clocks ..................................................................................................................................................... 2
Reset....................................................................................................................................................... 2
10/100 Physical Layer Transceivers........................................................................................................... 3
Encoder/Decoder .................................................................................................................................... 3
Link Monitor ............................................................................................................................................ 3
Collision Detection .................................................................................................................................. 3
Auto-Negotiation ..................................................................................................................................... 3
Digital Adaptive Equalizer ....................................................................................................................... 4
ADC ........................................................................................................................................................ 4
Digital Clock Recovery/Generator........................................................................................................... 4
Baseline Wander Correction ................................................................................................................... 4
Digital to Analog Converter..................................................................................................................... 4
Stream Cipher......................................................................................................................................... 5
MII Management ..................................................................................................................................... 5
10/100/1000 Physical Layer Transceiver.................................................................................................... 6
Encoder................................................................................................................................................... 6
Decoder .................................................................................................................................................. 6
Link Monitor ............................................................................................................................................ 7
Digital Adaptive Equalizer ....................................................................................................................... 7
Echo Canceller........................................................................................................................................ 7
CROSS TALK Cancellers ....................................................................................................................... 7
Analog-to-Digital Converter (ADC).......................................................................................................... 7
Clock Recovery/Generator...................................................................................................................... 8
Baseline Wander Correction ................................................................................................................... 8
Multimode TX DAC ................................................................................................................................. 8
Stream Cipher......................................................................................................................................... 8
Wire Map and Pair Skew Correction....................................................................................................... 9
Auto-Negotiation ..................................................................................................................................... 9
Automatic MDI Crossover ....................................................................................................................... 9
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