LXT908KCA4S データシートの表示（PDF） - Intel

部品番号

コンポーネント説明

一致するリスト

LXT908KCA4S

Universal 3.3V 10BASE-T and AUI Transceiver

Intel 

Universal 3.3V 10BASE-T and AUI Transceiver — LXT908

3.2.3

Dual Network Support-10Base T and Token Ring

Figure 11 shows the LXT908 with a Texas Instruments 380C26 CommProcessor. The 380C26 is

compatible with Mode 4 (MD2:0 = Low, High, High).

When used with the 380C26, both the LXT908 and a TMS38054 Token Ring transceiver can be

tied to a single RJ-45, allowing dual network support from a single connector. The LXT908 AUI

port is not used.

Figure 11. LXT908/380C26 Interface for Dual Network Support of 10BASE-T and

Token Ring

To TI TMS38054 Token Ring

Transceiver

From TI TMS38054 Token

Ring Transceiver

380C26

TXD

TXE

TXC

RXC

RXD

CRS

COL

LBK

PROGRAMMING

OPTIONS

MODE SELECT

LINE STATUS

330 330 330 330

Green Red Red Red

20 pF

20 pF

20 MHz

CLKI

TXD

TEN

TCLK

RCLK

RXD

CD

COL

LBK

CLKO

AUTOSEL

NTH

DSQE

PAUI

LI

TPIN

TPIP

TPONB

TPONA

TPOPA

TPOPB

MD2

MD1

MD0

JAB

CIN

PLR

CIP

2

1 1 : 1 16

100 Ω

3

14

RJ45

6

5

4

11.5 Ω 1% 6 1 : 2 11

3

2

220pF

11.5 Ω 1% 8

9

1

18 pF

LEDC/FDE

LEDR

LEDT/PDN

LEDL

DON

DOP

1 Bias resistor RBIAS should be located close to the pin

and isolated from other signals.

2 Additional magnetics and switching logic (not shown)

is required to implement the dual network solution.

+3.3 V

0.1 µF

TEST

VCC1

VCC2

DIN

DIP

12.4 kΩ

RBIAS

1%

GND1 GND2

1

Datasheet

21

Document #: 249049

Revision #: 002

Rev. Date: June 19, 2001

Share Link: