LAN8830 Gigabit Ethernet Transceivers with RGMII Microchip Technology LAN8830 Gigabit Ethernet Transceivers with RGMII are integrated, triple-speed (10Base-T/100Base-TX/1000Base-T) Ethernet physical-layer transceivers designed for transmission and reception of data on standard CAT-5, CAT-5e, and CAT6 unshielded twisted pair (UTP) cables. LAN8830 features an RGMII (Reduced Gigabit Media Independent Interface) for connecting Ethernet switches, microcontrollers, or microprocessors. Furthermore, an embedded Ethernet Media Access Controller (MAC) supplying the RGMIII interface for data transfer at 1000Mbps or 10/100Mbps.