LXT972A datasheet equivalent, 3.3v dual-speed fast ethernet transceiver datasheet.
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3.3V Operation. Low power consumption (300 mW typical). 10BASE-T and 100BASE-TX using a single RJ-45 connection. Supports auto-negotiation and parallel detec.
It provides a Media Independent Interface (MII) for easy attachment to 10/100 Media Access Controllers (MACs). This doc.
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