In order to realize the serial communication with high-speed and accuracy in PCM system (2048 kbit/s), the performance of the system can be improved by adding CRC check. The realizing of sending and receiving module is based on EP2C8Q208C8. The program about serial communication with CRC check by using verilog language is designed and downloaded into the FPGA chip, and the experimental verification is carried on. The data of experimentation meet theoretical analysis,the speed and accuracy of PCM communication are increased.%在2048kbit/s的PCM基群设备中采用CRC校验方案,可实现准确的串口通信,选用Altera公司的cycloneⅡ系列的EP2C8Q208C8芯片,实现基群设备中CRC串行通信的接收、发送和接口控制功能,采用verilog语言实现CRC算法,并用QuartusⅡ软件平台进行多字节校验仿真,最终下载到芯片上实验,实验结果与理论分析一致,提高了PCM基群设备通信的速率和可靠性.
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