TNETX15VE VLAN-ENGINE ADDRESS-LOOKUP DEVICE

SPWS028B - APRIL 1997 - REVISED SEPTEMBER 1997

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features

Provides up to 2K-Address Matching System
VLAN Support for Single or Multiple ThunderSWITCH^TM Devices
Provides Glueless External-Address Match Interface to the TNETX3150/TNETX3150A
Uses Standard Off-the-Shelf SRAMs
EEPROM Interface for Auto-Configuration, No CPU Needed
Automatic Aging Through User-Selectable Aging (AGE) Threshold
Fabricated in 3.3-V Low-Voltage Technology
Requires 3.3-V and 5-V Power Supplies
5-V Tolerant I/Os
Provides Direct Input/Output (DIO) Interface for Management Access and Control of the Address-Lookup Table
Address Lookups, Adds, and Deletes Are Automatically Performed in Hardware
User-Selectable Interrupts Simplify the Management Operations
Provides Spanning-Tree Support
Secure Addresses From Changing Ports
MII Data I/O (MDIO) PHY Management Interface
Management Access to Statistic Registers
Packaged in 144-Terminal Plastic Quad Flatpack
JTAG Compliant
ThunderSWITCH is a trademark of Texas Instruments Incorporated Ethernet is a trademark of Xerox Corporation.

description

The TNETX15VE performs the VLAN-engine address-lookup function for the TNETX3150/TNETX3150A Ethernet^TM switch using a glueless interface. The TNETX15VE device determines the addresses to use and match from the TNETX3150/TNETX3150A DRAM bus. The address-lookup table is maintained in external SRAM. The frame-matching and routing information is given to the TNETX3150/TNETX3150A through the external address-matching (EAM) interface.

The TNETX15VE is designed to work in either unmanaged or managed mode. Unmanaged operation is accomplished through EEPROM support. Startup options are auto-loaded into the TNETX15VE registers using the EEPROM interface. If the TNETX15VE is initialized by automatic loading from the EEPROM, it begins operation automatically.

All functions of this device are fully controllable by management through a direct input/output (DIO) interface. In addition, this device can interrupt the external management processor with user-selectable interrupts.

This device also provides support for easy management control of IEEE Std 802.3u media-independent interface (MII) managed devices. A typical application is shown in the following:

Title: VLAN-ENGINE ADDRESS-LOOKUP DEVICE
Product Family: NETWORKING COMPONENTS
Device Functionality: ETHERNET SWITCHING
Orderable Devices: TNETX15VEPGE

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View more information about generic part numbers:TNETX15VE

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