Texas Instruments TNETX3270 instruction

TNETX3270 ThunderSWITCH 24/3 ETHERNET SWITCH

WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS

SPWS043B ± NOVEMBER 1997 ± REVISED APRIL 1999

DPort Configurations: Twenty-Four 10-Mbit/s Ports

±Ports Arranged in Three Groups of Eight Ports in a Multiplexed Interface

±Direct Multiplexer Interface to TNETE2008

±Full and Half Duplex

±Half-Duplex Collision-Based Flow Control

±Full-Duplex IEEE Std 802.3x Flow Control

±Interoperable Support for IEEE Std 802.1Q VLAN

±Speed, Duplex, and Pause

Autonegotiation With Physical Layer (PHY)

Three 10-/100-Mbit/s Ports

±Direct Interface to TNETE2101

±Full and Half Duplex

±Half-Duplex Collision-Based Flow Control

±Full-Duplex IEEE Std 802.3x Flow Control

±Interoperable Support for IEEE Std 802.1Q VLAN

±Pretagging Support

DPort Trunking and Load Sharing

DLED Indication of Port Status

DSDRAM Interface

±Direct Interface to 8-Bit/Word and 16-Bit/Word, 16-Mbit, and 64-Mbit SDRAMs

±32-Bit-Wide Data Bus

±Up to 32 Mbytes Supported

±83.33-MHz SDRAM Clock

±12-ns (±12) SDRAMs Required

DRemote Monitoring (RMON) Support ± Groups 1, 2, 3, and 9

DDirect I/O (DIO) Management Interface

±Eight Bits Wide

±CPU Access to Statistics, Registers, and Management Information Bases (MIBs)

±Internal Network Management Port

±Forwards Spanning-Tree Packets to CPU

±Serial Media-Independent Interface (MII) for PHY Control

DEEPROM Interface for Autoconfiguration (No CPU Required for Nonmanaged Switch)

DInternal Address-Lookup/Frame-Routing Engine

±Interoperable Support for IEEE Std 802.1Q VLAN

±Supports IEEE Std 802.1D Spanning Tree

±Thirty-Two Assignable Virtual LANs (VLANs)

±Multiple Forwarding Modes

±2K Total Addresses Supported

±Port Mirroring

DIEEE Std 1149.1 (JTAG) Interface (3.3-V Signals)

D2.5-V Process With 3.3-V-Drive I/O

DPackaged in 240-Terminal Plastic Quad Flatpack

SDRAM

Controller

EEPROM

Interface

CPU

Interface

TAP

(JTAG)

Queue

Manager

Network

Statistics

Logic

Data Path

Controller (MAC)

MUXMUXMUX

Eight Ports (00±07)

10 Mbit/s

Eight Ports (08±15)

10 Mbit/s

Eight Ports (16±23)

10 Mbit/s

Statistics

Storage

MIB

LED	Address
Interface	Compare

Controller (MAC)

MII

Three Ports (24±26) 10/100 Mbit/s

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

TI and ThunderSWITCH are trademarks of Texas Instruments Incorporated.

Ethernet is a trademark of Xerox Corporation.

Secure Fast Switching is a trademark of Cabletron Systems, Inc.

Port-trunking and load-sharing algorithms were contributed by Cabletron Systems, Inc. and are derived from, and compatible with, Secure Fast Switching .

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

Texas Instruments TNETX3270 specifications With 24 10-MBIT/S Ports and 3 10-/100-MBIT/S Ports

Models: TNETX3270

TNETX3270 ThunderSWITCH 24/3 ETHERNET SWITCH

WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS