Presently, the embedded system, which was composed of SOC, entered into people's life more and more widely. We can see it frequently whether in the mobile phones, television, industrial control equipment or network devices. With the continuous expansion of network scale and the increase of service, the embedded Internet has played an increasingly important role. Ethernet is the most w idely used LAN technology in the present day world. With the increasing use of embedded systems, the need for incorporating Ethernet connectivity into the embedded systems is greatly felt. Therefore, the study of Ethernet communication on embedded system is necessary. The embedded Ethernet is widely applied, and its research is very important. In this paper a 10/100 Mbps embedded ethernet controller has been developed in Verilog-HDL, that can support tw o speeds (10/100Mbps), two modes (full/half duplex), and can communicate with PHY through MII. The Ethernet controller designed conforms to the standards of IEEE 80 2.3 communication protocol. The simulation has been done using ModelSim6.4SE. FPGA Prototyping w as done using Xilinx EDK tool on Xilinx Virtex-5FX70T FPGA. The packet capture has been done using Wireshark tool
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