The basal principle of cyclic redundancy code and cyclicredundancy check in USB specification were introduced. Thecircuits and Verilog HDL programs which design for serial or parallel CRC computation were also introduced.

• 介绍了循环冗余码基本原理、USB协议中的循环冗余校验以及CRC校验的串、并行设计和Verilog HDL代码实现。