The Research of Signal Analysis System Based on USB Bus

Due to the lack of data packet interception to accurately determine the hardware or software problem, for the signal analysis system can effectively solve the problem that the design of USB bus. The first, this paper analyzes the USB communication, describes the system structure of USB, USB physical interface and USB events; secondly, the USB bus signal analysis and the overall design of the system; finally, the software of the system is realized, and gives part of the source code. This paper has certain positive role for the hardware engineers and software R D personnel.