What are the PHY implementations of multidrop SPE?
There are three common physical layer (PHY) variants for multidrop single pair Ethernet (SPE), basic PHY, media access controller (MAC) PHY, and transceiver. They rely on different interfaces, including a media-independent interface (MII), reduced media-independent interface (RMII), serial peripheral interface (SPI), OPEN Alliance 3-pin (OA-3P), and Ethernet advanced physical layer (Ethernet-APL). This article begins with