TNETX4080 datasheet(1/64 Pages) TI1

部件名	TNETX4080

功能描述	ThunderSWITCH IIE 8-PORT 10-/100-MBIT/S ETHERNETE SWITCH

PDF	64 Pages

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制造商	TI1 [Texas Instruments]

网页	http://www.ti.com

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TNETX4080

ThunderSWITCH II™ 8-PORT 10-/100-MBIT/S ETHERNET™ SWITCH

SPWS050A – AUGUST 1998 – REVISED NOVEMBER 1998

1

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

D Single-Chip 100-Mbit/s Device

D Integrated Address-Lookup Engine and

Table Memory for 1-K Addresses

D Supports IEEE Std 802.1Q Virtual-LAN

(VLAN) Tagging Scheme

D Provides Data Path for Network

Management Information [No External

Media-Access Control (MAC) Required]

D Full-Duplex IEEE Std 802.3 Flow Control

D Half-Duplex Back-Pressure Flow Control

D Fully Nonblocking Architecture Using

High-Bandwidth Rambus Memory

D Port Trunking/Load Sharing for

High-Bandwidth Interswitch Links

D EEPROM Interface for Autoconfiguration

(No CPU Required for Nonmanaged Switch)

D Provides Direct Input/Output (DIO) Interface

for Configuration and Statistics Information

D Supports On-Chip Per-Port Storage for

Etherstat

™ and Remote Monitoring (RMON)

Management Information Bases (MIBs)

D Fabricated in 2.5-/3.3-V Low-Voltage

Technology

D Supports Spanning Tree

D Packaged in 352-Pin Ball Grid Array

Package

description

The TNETX4080 is an 8-port 100-Mbit/s nonblocking Ethernet

™ switch with an on-chip address-lookup engine.

The TNETX4080 provides a low-cost, high-performance switch solution. The TNETX4080 is a fully manageable

desktop switch solution achieved by combining the TNETX4080 with physical interfaces and high-bandwidth

rambus-based packet memory and a CPU. The TNETX4080 also provides an interface capable of receiving

and transmitting simple-network management protocol (SNMP) and bridge protocol data units (BPDU)

(spanning-tree) frames.

The TNETX4080 provides eight 10-/100-Mbit/s interfaces. In half-duplex mode, all ports support back-pressure

flow control to reduce the risk of data loss for a long burst of activity. In the full-duplex mode of operation, the

device uses IEEE Std 802.3 frame-based flow control. With full-duplex capability, ports 0–7 support 200-Mbit/s

aggregate bandwidth connections. The TNETX4080 also supports port trunking/load sharing on the

10-/100-Mbit ports. This can be used to group ports on interswitch links to increase the effective bandwidth

between the systems.

The internal address-lookup engine (IALE) supports up to 1-K unicast/multicast and broadcast addresses and

up to 16 IEEE Std 802.1Q VLANs. For interoperability, each port can be programmed as an access port or

non-access port to recognize VLAN tags and transmit frames with VLAN tags to other systems that support

VLAN tagging. The IALE performs destination- and source-address comparisons and forwards unknown

source- and destination-address packets to ports specified via programmable masks.

Statistics for the Etherstat, SNMP, and remote monitoring management information base (RMON MIB) are

independently collected for each of the eight ports. Access to the statistics counters is provided via the direct

input/output (DIO) interface. Management frames can be received and transmitted via the DIO interface,

creating a complete network management solution. Figure 1 is a block diagram of the TNETX4080.

Copyright

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.

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, ThunderSWITCH, and ThunderSWITCH II are trademarks of Texas Instruments Incorporated.

Ethernet and Etherstat are trademarks 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

™.

类似零件编号 - TNETX4080

制造商	部件名	数据表	功能描述
Texas Instruments	TNETX4090	979Kb / 78P	ThunderSWITCH IIE 9-PORT 100-/1000-MBIT/S ETHERNETE SWITCH
Texas Instruments	TNETX4090GGP	979Kb / 78P	ThunderSWITCH IIE 9-PORT 100-/1000-MBIT/S ETHERNETE SWITCH

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类似说明 - TNETX4080

制造商	部件名	数据表	功能描述
PMC-Sierra, Inc	PM3350	39Kb / 2P	8-Port 10 Mbit/s Switch
PMC-Sierra, Inc	PM3351	32Kb / 2P	Single-Port 10/100 Mbit/s Ethernet Switch
Texas Instruments	TNETX3100	1Mb / 80P	ThunderSWITCHE 10-PORT 10-/100-MBIT/S ETHERNETE SWITCH
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	TNETX3190	847Kb / 66P	ThunderSWITCHE 16/3 ETHERNETE SWITCH WITH 16 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS
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PMC-Sierra, Inc	PM3350-1	51Kb / 2P	8-Port 10 Mbit/s Switch