Datasheet > LPM-NE2000

LPM-NE2000

更新时间： 2024-11-23 22:29:59

品牌	Logo	应用领域
其他 - ETC		局域网以太网
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2页	62K
描述
Ethernet LAN Card

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LPM-NE2000 数据手册

LPM-NE2000

MCM-NE2000

Ethernet LAN Card

STD BUS, CMOS STD BUS

FEATURES

●

IEEE 802.3 Ethernet controller board

●

10 Mbps operation, CSMA/CD

●

Supports 10BASE2 thin coax, 10BASE5 via an AUI

and 10BASE-T

twisted pair interfaces

NE2000 compatible architecture

●

Software configurable settings for jumperless, auto-

configurable,

“easy-to-use” network designs

EPROM socket for auto-boot applications

●

Five LEDs onboard for visual status information

●

Compatible with many Network Operating Systems

drivers and utilities

Diagnostic loopback support for increased testability

●

Supports 20- or 24-bit memory addressing

●

Available for CMOS STD Bus: LPM-NE2000

●

Single +5 volt power required

The MCM/LPM-NE2000 module is a NE2000 compatible

local area network adapter board designed for the STD

Bus. As a result, most network operating systems, dri-

vers and utilities for using Ethernet in a PC-compatible

environment can be used without modification.

with the IEEE 802.3 standards. Supported interfaces

include both the Thin and Thick Ethernet and Twisted-

pair Ethernet (10BASE-T) on a single STD Bus board.

It conforms to the IEEE 802.3 and Ethernet standards for

a 10 Mbps Carrier Sense Multiple Access/Collision

Detection (CSMA/CD) local area network. The module

provides connectivity for 10BASE5 thick coax, 10BASE2

thin coax, and 10BASE-T twisted-pair on a single board.

Also an EPROM socket is included to support user

installed remote boot extensions.

Attachment Unit Interface (AUI) - The LPM/MCM-

NE2000 can be used with an external Medium

Attachment Unit (MAU) so that connectivity to

10BASE5 or another medium can be achieved. This

interface is via the 15-pin D-type connector at the board

edge. The board provides a +12 volt line to power the

transceivers via the AUI connector.

FUNCTIONAL CAPABILITY

Bus Interface - The LPM-NE2000 is the CMOS STD Bus

version and the MCM-NE2000 is the STD Bus version of

this card. The LPM/MCM prefix is used when the card

has the same features and functionality.

Twisted Pair Interface - The MCM/LPM-NE2000 also

supports the use of unshielded twisted pair cable so

that it can plug into a concentrator in a 10BASE-T net-

work. An RJ-45 connector is located at the board edge.

Addressing - The LPM/LPM-NE2000 supports 20- or 24-

bit addressing for memory and 10-bit for I/O for use with

XT or AT compatible STD Bus processors.

Thin Ethernet Connection - The board has a coaxial

transceiver interface with an onboard RG-58 type BNC

connector. A DC/DC power supply provides isolated

power from the STD Bus +5 volt supply.

Interrupts - The LPM/MCM-NE2000 supports the STD-

8088 interrupt priority scheme on the backplane with 4

separate jumper selectable priority levels.

EPROM Socket - A socket is provided to support a user

installed device for auto-boot software drivers.

Ethernet Controller - The LPM/MCM-NE2000 module

uses a 8390 compatible integrated controller. This con-

troller provides the Ethernet Media Access Control

(MAC), Encoder-Decoder (ENDEC) with an AUI inter-

face, and 10BASE-T transceiver functions in accordance

EEPROM - The configuration information describing

the device’s architecture, address, interrupt, etc. can

either be loaded from jumpers or from an EEPROM.

Use of the EEPROM allows the board to be configured

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