The Realtek RTL8211F-CG/RTL8211FD-CG/RTL8211FI-CG/RTL8211FDI-CG is a highly integrated Ethernet transceiver that complies with 10Base-T, 100Base-TX, and 1000Base-T IEEE 802.3 standards. It provides all the necessary physical layer functions to transmit and receive Ethernet packets over CAT.5 UTP cable. The RTL8211FI and RTL8211FDI are manufactured to industrial grade standards. The RTL8211F(I)/RTL8211FD(I) uses state-of-the-art DSP technology and an Analog Front End (AFE) to enable high-speed data transmission and reception over UTP cable. Functions such as Crossover Detection & Auto-Correction, polarity correction, adaptive equalization, cross-talk cancellation, echo cancellation, timing recovery, and error correction are implemented in the RTL8211F(I)/RTL8211FD(I) to provide robust transmission and reception capabilities at 10Mbps, 100Mbps, or 1000Mbps. Data transfer between MAC and PHY is via the Reduced Gigabit Media Independent Interface (RGMII) for 1000Base-T, 10Base-T, and 100Base-TX. The RTL8211F(I)/RTL8211FD(I) supports various RGMII signaling voltages, including 3.3, 2.5, 1.8, and 1.5V.