BCM5318 Datasheet, PDF (2/2 Pages) Broadcom Corporation. – 8 PORT 10/100 SWITCH WITH ON CHIP PACKET

MDI/MDIX
MDI/MDIX
MDI/MDIX
MDI/MDIX
MDI/MDIX
MDI/MDIX
MDI/MDIX
MDI/MDIX
MII Interface
Inter-Chip Expansion
CPU Interface
BCM5318 OVERVIEW
10/100 PHY
10/100 PHY
10/100 PHY
10/100 PHY
10/100 PHY
10/100 PHY
10/100 PHY
10/100 PHY
MAC
MAC
MAC
MAC
MAC
MAC
MAC
MAC
MAC
MIB Registers
Switch Fabric
& ARL Logic
DMA Interface
256 KB Packet Buffer
SPI/CPU
Interface
LED Interface
LEDs
The Broadcom BCM5318 device is a very highly integrated
solution. It combines all the functions of a high-speed switch
system–including packet buffer, PHY transceivers, media access
controllers, address management and a non-blocking switch
fabric–into a single 0.22µ CMOS device. It complies with the
IEEE 802.3, 802.3µ and 802.3x specifications, including the
MAC control PAUSE frame and auto-negotiation subsections,
providing compatibility with all industry-standard Ethernet and
Fast Ethernet devices.
This 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
Category 3, 4, or 5 unshielded twisted pair (UTP) cable and
100BASE-TX Fast Ethernet on Category 5 UTP cable.
Even though this device is primarily targeted for the
cost-sensitive unmanaged market, very low cost management
can also be provided utilizing the proprietary MIB Autocast™
function. MIB Autocast encapsulates the on-chip MIB statistics
and sends them out automatically on a predefined port (or ports)
at programmed intervals. This feature eliminates the need for a
costly CPU and simplifies the management interface.
Using this mode, the BCM5318 periodically transmits a legal
Ethernet frame on a designated port. The frames can be
intercepted by an external management probe or a dedicated
network management application, resident on any node within
the network. This function requires only a small, low-cost
microcontroller to initialize and configure the device.
The BCM5318 provides an on-chip MIB statistics register to
collect, receive, and transmit statistics for each port. Additionally
it provides direct hardware support for the EtherLike MIB,
Bridge MIB, MIB II (interfaces) and the first four groups of the
RMON MIB. All nine groups of RMON can be supported by
using additional capabilities, such as port mirroring/snooping,
together with an external microcontroller to process some MIB
attributes. The MIB registers can be accessed through the serial
management port by an external microcontroller.
Broadcom^®, the pulse logo, MIB Autocast^TM, 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.
5318-PB03-R-06.25.03
Phone: [phone]
FAX: [phone]
Email: [e-mail]
Web: www.broadcom.com