DP83905AVQB datasheet(1/80 Pages) NSC

tên linh kiện	DP83905AVQB

Giải thích chi tiết về linh kiện	AT Local Area Network Twisted-Pair Interface Controller

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nhà sản xuất	NSC [National Semiconductor (TI)]

Trang chủ	http://www.national.com

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TLF11498

PRELIMINARY

November 1995

DP83905 ATLANTIC

TM

AT Local Area Network Twisted-Pair

Interface Controller

General Description

The ATLANTIC AT Local Area Network Twisted-pair Inter-

face Controller is a CMOS VLSI device designed for easy

implementation of CSMACD local area networks

Unique to the ATLANTIC is the integration of the entire bus

interface for PC-AT

ISA (Industry Standard Architecture)

bus based systems Hardware and software selectable op-

tions allow the ATLANTIC’s bus interface to be configured

software compatible to either an NE2000 or Ethercard

PLUS16TM All bus drivers and control logic are integrated

to reduce board cost and area

Supported

network

interfaces

include

10BASE5

or

10BASE2 Ethernet via an external transciever connected to

its AUI port and Twisted-pair Ethernet (10BASE-T) using

the on-board transceiver The ATLANTIC provides the

Ethernet Media Access Control (MAC) Encode-Decode

(ENDEC) with an AUI interface and 10BASE-T transceiver

functions in accordance with the IEEE 8023 standards

The ATLANTIC’s integrated 10BASE-T transceiver fully

complies with the IEEE standardThis functional block incor-

porates the receiver transmitter collision heartbeat Ioop-

back jabber and link integrity blocks as defined in the stan-

dard The transceiver when combined with equalization re-

sistors transmitreceive filters and pulse transformers pro-

vides a complete physical interface from the ATLANTIC

Controller’s ENDEC module and the twisted pair medium

(Continued)

Features

Y

Controller and integrated bus interface solution for IEEE

8023 10BASE5 10BASE2 and 10BASE-T

Y

Software compatible with

Novell ’s NE2000Plus indus-

try standard Ethernet Adapters

Y

Selectable buffer memory size

Y

No external bus logic or drivers

Y

Integrated controller ENDEC and transceiver

Y

Full IEEE 8023 AUI interface

Y

Single 5V supply

10BASE-T TRANSCEIVER MODULE

Y

Integrates transceiver functionality

Transmitter and receiver functions

Collision detect heartbeat and jabber

Selectable link integrity test or link disable

Polarity DetectionCorrection

ENDEC MODULE

Y

10 Mbits Manchester encodingdecoding

Y

Squelch on receive and collision pairs

MACCONTROLLER MODULE

Y

Software compatible with DP8390 DP83901 DP83902

Y

Efficient buffer management implementation

10 System Diagram

TLF11498 – 1

TRI-STATE

is a registered trademark of National Semiconductor Corporation

ATLANTICTM is a trademark of National Semiconductor Corporation

PC-AT

is a registered trademark of International Business Machines Corp

Novell

is a registered trademark of Novell Inc

EtherCard PLUSTM and EtherCard PLUS 16TM are trademarks of Standard Microsystems Corp

C1995 National Semiconductor Corporation

RRD-B30M115Printed in U S A

Số phần tương tự - DP83905AVQB

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