EELXT905PC.C2 查看數據表（PDF） - Intel

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EELXT905PC.C2

Universal 10BASE-T Transceiver with 3.3V Support

Intel 

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

Figure 8. Intel Controller Application (Mode 2)

Not Connected

20 MHz System Clock

CLK

TXD

82596

Back-End/

Controller

Interface

RTS

TXC

RXC

RXD

CRS

CDT

Programming

Options

Link Test Enable

Loopback Enable

Line Status

10K

+5V 10K

10K

Power

Down

+5V

Full

Duplex

0.1 µF

CLKO

CLKI

TXD

TEN

TCLK

RCLK

RXD

CD

COL

MD0

MD1

DSQE

LI

LBK

1

TPIN

0.1 µF

RJ-45

1 1:1 16

6

50 Ω 1%

5

TPIP

50 Ω 1%

3

4

14

3

TPON

6 1:2 11

2

11.8 Ω 1%

1

TPOP 11.8 Ω 1% 8

9

100 pF

100 pF

LEDL

LEDC/FDE

LEDT/PDN

VCC1

RBIAS

VCC2 GND1 GND2

7.5 kΩ 1%

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

3.3

Dual Network Support - 10BASE-T and Token Ring

Figure 9 on page 20 shows the LXT905 with a Texas Instruments 380C26 CommProcessor. The

380C26 is compatible with Mode 4 (MD0 and MD1 both high). When used with the 380C26, both

the LXT905 and a TMS38054 Token Ring transceiver can be tied to a single RJ-45 allowing dual

network support from a single connector.

Datasheet

19

Document #: 249271

Revision #: 002

Rev. Date: June 19, 2001

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