EELXT905PC.C2 データシートの表示（PDF） - Intel

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EELXT905PC.C2

Universal 10BASE-T Transceiver with 3.3V Support

Intel 

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

3.1.5

3.2

Magnetic Information

The LXT905 requires a 1:1 turns ratio for the receive transformer and a 1:2 turns ratio for the

transmit transformer. Application Note 073, Magnetic Manufacturers (248991-001) lists

transformers suitable for the applications described in this data sheet. Designers are advised to test

and validate all magnetics before committing to a specific component.

Typical 10BASE-T Application

Figure 8 on page 19 is a typical LXT905 application. The DTE is connected to a 10BASE-T

network through the twisted-pair RJ-45 connector. With MD0 tied high and MD1 grounded, the

LXT905 logic and framing are set to Mode 2 (compatible with Intel 82596 controllers*). Connect a

20 MHz system clock input at CLKI (leave CLKO open). The LI pin externally controls the link

test function.

* Refer to Intel Application Note 51, MAC Interface Design Guide for Intel Controllers (249007-

001) when designing with Intel controllers.

18

Datasheet

Document #: 249271

Revision #: 002

Rev. Date: June 19, 2001

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