| 摘要 |
An I/O controller 20 that is connected to a I/O controller 20a via a transfer path. The I/O controller 20 includes a buffer 22 including a plurality of entries that stores data to be transmitted to the I/O controller 20a. The I/O controller 20 includes a tag checker 29 that detects final data to be transmitted to the I/O controller 20a among the data stored in the entries in the buffer 22. The I/O controller 20 includes a PRBS generator 36 that generates test data for testing the transfer path and the I/O controller 20a, when the tag checker 29 detects the final data. The I/O controller 20 includes a SerDes macro 39 that transmits the test data generated by the PRBS generator 36 to the I/O controller 20a, after transmitting the final data detected by the tag checker 29.
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