Datasheet > DM9081_01

DM9081_01

更新时间： 2022-12-28 03:02:49

品牌	Logo	应用领域
联杰 - DAVICOM		控制器
页数	文件大小	规格书
22页	211K
描述
10BASE-T Hub Controller

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DM9081_01 数据手册

DM9081

10BASE-T Hub Controller

General Description

The 10BASE-T Hub Controller (DM9081) provides a

system level solution for designing IEEE-compliant

802.3 repeaters that incorporate 10BASE-T

transceivers. This device integrates the repeater

functions specified by section 9 of the IEEE 802.3

standard. The Twisted Pair transceiver is compliant

with 10BASE-T standards. The DM9081 provides

eight integral Twisted Pair Media Attachment Units

(MAUs) and two Attachment Unit Interface (AUI)

ports in a 100-pin QFP package.

The total number of ports per repeater unit can be

increased by connecting multiple DM9081 chips via

their expansion ports. The DM9081 supports LED

drivers to monitor port status. It displays Link, Carrier

Sense, Collision, Partition, and Bit Rate Error Status.

In minimum mode, Link, Carrier Sense, and Collision

Status can be displayed without external TTL

devices.

Block Diagram

PREAMBLE

RXP1

DATA IN

JAM SIGNAL

MUX

RXN1

AUI

PORT1

CDP1

CDN1

TXP1

TXN1

MANCHESTER

DECODER

MUX

FIFO

RX_CLK

RXP2

RXN2

CDP2

CDN2

TXP2

TXN2

AUI

PORT2

PLL

RXD0+

RXD0-

TPO0+

DTPO0+

DTPO0-

TPO0-

PORT0

NRZ DATA

MANCHESTER

ENCODER

MUX

DATA OUT

EXPIN#

EXPOUT#

DAT

EXPANSION

PORT

STATE

MACHINE

RXD7+

RXD7-

TPO7+

DTPO7+

DTPO7-

TPO7-

LED PORT1

TIMER

LED PORT2

PORT7

Final

Version: DM9081-DS-F02

February 02, 2001

12 3 4 5 6 7...22

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