EELXT905PC.C2 View Datasheet(PDF) - Intel
Part Name
Description
MFG CO.
'EELXT905PC.C2' PDF : 38 Pages View PDF
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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