The STE100P,also referred to as STEPHY1, is a high performance Fast Ethernet physical layer interface for 10Base-T and 100Base-TX applications。It was designed with advanced CMOS technology to provide a Media Independent Interface (MII) for easy attachment to 10/100 Media Access Controllers (MAC) and a physical media interface for 100Base-TX of IEEE802.3u and 10Base-T of IEEE802.3。 The STEPHY1 supports both half-duplex and fullduplex operation, at 10 and 100 Mbps operation。Its operating mode can be set using auto-negotiation,parallel detection or manual control。It also allows for the support of auto-negotiation functions for speed and duplex detection。
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