1 2 - P O R T T R I - S P E E D D E S K T O P S W I T C H :
B E N E F I T S :
Ensures Maximum Data Throughput on Even Highly Loaded Networks
Simplifies PCB Layout Significantly by Utilizing Reduced Mode Interface
Standards for all Speeds
Eliminates the Need for External Buffer Memory While Maintaining High
Peak Load Performance
Enables Advanced Switch Management Using Run-time Protocols, in
Addition to Low Cost Unmanaged and Web Managed Operation
Enables Ultra Low-cost Web Managed Switch Systems
Connects Effortlessly to Networks, Hosts, and Controllers that Utilize up
to 12K Sized Jumbo Frames
Optimizes Network Performance to Support any Digital Stream, from
Internet Browsing to VoIP and Video
Stores a Large Amount of Stations at Wire Speed in the On-chip MAC
Table, Ensuring Optimal Network Performance
Ensures Loss-less Data Transmission While Supporting Existing Legacy
Ethernet Equipment
Eliminates Unwanted Flooding of Ports and Thereby Increases Overall
Network Performance
Provides High Bandwidth Uplinking Abilities
Supports Complex Network Topologies with Fast Failure Recovery,
and Access Control
F E A T U R E S :
12 Gigabit Ethernet Ports with Non-blocking Wire-speed Performance
Tri-speed (10/100/1000 Mbit/s) Operation via RGMII Interfaces
208 KB On-chip Frame Buffer
8/16-bit CPU Interface, and 4-wire Serial CPU Interface
On-Chip 8051 CPU
Jumbo Frame Support
Programmable Classifier for QoS (Layer 2-4), Including IEEE Std 802.1pTM
8K MAC Addresses and 4K VLANs (IEEE Std 802.1QTM)
Full Duplex Flow Control (IEEE Std 802.3xTM) and Half Duplex Back
Pressure
Multicast and Broadcast Storm Control
Flexible Link Aggregation Compliant to IEEE Std 802.3adTM
Multiple protocol Support IEEE Std 802.1DTM, IEEE Std 802.1WTM
IEEE Std 802.1sTM, IEEE Std 802.1XTM
A P P L I C A T I O N S :
12-port Web Managed Tri-speed Desktop Switch
12-port Unmanaged Tri-speed Desktop Switch
12-port Smart Managed Tri-speed Desktop Switch
Control Plane Controller
StanstedTM 12-port Gigabit Ethernet Switch-on-a-Chip
ETHERNET PRODUCTS
PB-VSC7384-001
VSC7384
VSC7384
Stansted
Quad
PHY
Quad
PHY
Quad
PHY
FLASH
Parallel
Interface
RGMII
Enterprise
Access
Metro
Core
For more information on Vitesse Products visit the Vitesse web site
at www.vitesse.com or contact Vitesse Sales at (800) VITESSE
or sales@vitesse.com
2003 Vitesse Semiconductor Corporation
StanstedTM 12-port Gigabit Ethernet Switch-on-a-Chip
VSC738
4
StanstedTM is a highly integrated, single-chip Ethernet
switch with 12 non-blocking ports. As part of Vitesse's
LondonTM Family Of Switches, Stansted delivers high
performance with easy migration paths, and
comprehensive System Solutions that enable ultra-
short time-to-market and market leading system cost.
A Vitesse Switch Family Member
Stansted is a part of the Vitesse LondonTM Family Of Switches.
With its 12 tri-speed ports, it is specifically targeted at small-
medium business applications. In addition, Stansted enables
Web Management at unprecedented low cost by sporting a fully
integrated on-chip 8051 micro controller. Additionally, the on-
chip 8051 is perfectly suited for unmanaged systems as well.
Being a member of the switch family provides a number of
unique advantages when designing with the chip, including
nearly 100% software compatibility between members. Thus,
software written for Stansted can easily be used with other
switch configurations in the family, and vice-versa.
Additionally, building a product family is easy when designing
with Vitesse switches. Upgrading designs to other port counts, or
migrating to other configurations or future technology is
achievable with minimum effort and time.
The Vitesse London Family Of Switches
Stansted, as part of the Vitesse London Family Of Switches,
shares the unique traits of the family.
The highly integrated switches require no external memory at all,
and the use of Reduced Mode interfaces (RGMII) simplifies PCB
layout to reduce time and cost. Further trimming down system
cost is the persistently low power dissipation of the family.
The switches provide for high performance designs with their
non-blocking, wire-speed performance, which includes wire-
speed MAC address learning.
G E N E R A L D E S C R I P T I O N :
Designing both unmanaged and managed solutions is straightforward. The
chips offer both serial and parallel CPU interfaces, and support a host
of management protocols such as GxRP, SNMP, and three flavors of
Spanning Tree: Standard STP, Multiple STP, and Rapid STP.
Gaining control with networks operated by the Vitesse switches is
simple; advanced Layer 2-4 classification, plus shaping and policing
functionality, along with port authentication support, provide flexible
QoS operation. This is backed up by link aggregation and VLAN
support, enabling advanced techniques such as "802.1Q-in-802.1Q" to
be deployed. Additionally, OAM is supported for designing switch
products for Ethernet in the MAN.
Designing with Vitesse London Family Of Switches means designing
with the whole Vitesse Solution:
The outstanding Vitesse web managed switch software system that
runs on a standard 8051 controller, is provided. This is in addition to
the unmanaged and smart managed software systems for 8051, which
are also included. For homegrown software development our full
platform and OS independent switch API is supplied.
Accompanying the software systems are the Vitesse Switch
Reference Systems. These are production-ready hardware designs
that also serve as evaluation platforms for our switches.
The Vitesse Solution is supplied with a comprehensive collateral
package, which includes software source code, full documentation,
and an in-depth qualification report for easy pre-evaluation.
B L O C K D I A G R A M :
741 Calle Plano
Camarillo, CA 93012, USA
Tel: +1 805.388.3700
Fax: +1 805.987.5896
www.vitesse.com
S P E C I F I C A T I O N S :
25 MHz LVTTL Reference Clock
1.8 V Core Power Supply
2.5 and 3.3 V Interface Power Supply
448-pin TEPBGA-2 Package
g
0 to 11
Data Bus
Heathrow-II_Block_Diagram
CPU Interfaces
MII Management
Interface
Control/Status
Registers
SI
MIIM
PI
RGMII
10/100/1000
MAC
Rx FIFO
Tx FIFO
Port Block
Policer
Classifier
Shaper
10/100/1000
MAC
Rx FIFO
Tx FIFO
Port Block
Policer
Shaper
Analyzer/Arbiter
8051 Controller
Classifier
PDF 
ZIP