EELXT905PC.C2 View Datasheet(PDF) - Intel

Part Name

Description

MFG CO.

EELXT905PC.C2

Universal 10BASE-T Transceiver with 3.3V Support

Intel 

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LXT905 — Universal 10BASE-T Transceiver with 3.3V Support

Figure 9. LXT905/380C26 Interface for Dual 10BASE-T and Token Ring Support (Mode 4)

To TI TMS38054

Token Ring

Transceiver

20 MHz

From TI TMS38054

Token Ring

Transceiver

20 pF

20 pF

1

TXD

TXE

TXC

RXC

RXD

CRS

COL

LBK

+5V Line Status

300 300 300 300

CLKI

TXD

TEN

TCLK

RCLK

RXD

CD

COL

LBK

MD0

MD1

LI

CLKO

TPIN

TPIP

TPON

TPOP

0.1 µF

1 1:1

50 Ω 1%

50 Ω 1%

3

6 1:2

11.8 Ω 1%

11.8 Ω 1% 8

100 pF

2 RJ-45

16

6

5

4

14

3

11

2

1

9

100 pF

Green Red Red Red

+5V

0.1 µF

LEDR

LEDC/FDE

LEDT/PDN

LEDL

VCC1

VCC2

RBIAS

GND1 GND2 GND3

7.5 kΩ 1%

1 Optional: Centertap capacitor may improve EMC depending on board layout and system design.

2 Additional magnetics and switching logic (not shown) are required to implement the dual network solution.

3.4

Simple 10BASE-T Connection

Figure 10 shows a simple 10BASE-T application using an LXT905 transceiver and a Motorola

MC68EN360. The MC68EN360 is compatible with Mode 1 (MD0 and MD1 both Low).

20

Datasheet

Document #: 249271

Revision #: 002

Rev. Date: June 19, 2001

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