Ethernet user end access device suitable for coaxial cable

The utility model discloses an Ethernet user end access device suitable for a coaxial cable, which comprises a pair of coaxial data transceivers, a RJ-45 and four power supply interfaces. A 12V direct current power supply supplies power for the Ethernet user end access device. The inner portion of the device is provided with a duplex filter, which is used to complete the separation from cable television data and internet data, signals after separating are respectively connected to user televisions and computers by a coaxial port and a RJ-45 interface, thereby achieving the broadband access solution that a coaxial cable transfers cable television signals and Ethernet data signals at the same time. The inner portion of the device is provided with two physical layer chips which are a EOC-PHY and a FE-PHY and have the access speed of 20-100Mb/s, the device uses a novel transmission coding technology, and achieves 20-100Mb/s broadband access speed in 5-65MHz frequency band. The device uses an IEEE802.3ah media access control protocol, the transmission work of downlink and uplink signals are completed on a same frequency band, and the downlink and uplink communication use a time division duplex mode.