| 摘要 |
A USB simulation apparatus 1 in an embodiment of the invention sets an address of a device to communicate, a transfer mode or a band by a setting part 12a within a CPU 11, and manages test items (for example, error packet or abnormal sequence) every transaction by a transaction management part 12b, and determines an answer signal inputted from a communication opposed side by a received data determination part 12c, and branches the subsequent processing according to a determination result to select test items or sending data executed in the next transaction.
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