Eda Lan Ip Phone Chip Design And Fpga Implementation (receiving Part)

The design and FPGA implementation of LAN IP telephone has been completed in this project. The system is consist of the Main data processing board which is based onthe FPGA device and fast ethernet phyceiver RTL8201L and A- law PCM data encoder and decorder chip MSM7702-3, and the dial-up and display board which is based on MCU.The main board would carry out the core task of data processing, such as voice data packing and unpacking,the ethernet frame processing ,protocol processing,call processing,etc.the dial-up and display board would carry out the task of display the IP address which is input by consumer and status of network during talk period from the main board,and so on.In the paper the system of LAN IP telephone and the TCP/IP protocol is introduced firstly, then the FPGA device is stated.After that the FPGA-based hardware scheme is introduced in detail in chapter four. In the fifth chapter the Implementation of FPGA is introduced in detail. In the design of LAN IP telephone, the author has participated in the follow works: the systemdesign; Select chips, make the schematic circuit and PCB board of the main data processing board and debug it.the FPGA design, simulation and debugging of receiving part of LAN IP main chip. This systemhas been tested and verified and met the design requirement.