USB data monitoring apparatus

摘要

In the USB data monitoring apparatus, when a SYNC data of the received data signal is SYNC pattern 80H, and the PID data is a data showing that it is a token packet, the ADDR/ENDP judgement circuit 13 judges whether the ADDR data and ENDP data of the received data signal coincide with the ADDR/ENDP data of the recording object which is set in the ADDR/ENDP setting table circuit. Then, only when the ADDR data and ENDP data of the received data signal coincide with the ADDR/ENDP data of the recording object, the data signal is recorded in the memory by the memory writing control section. <IMAGE>