| 摘要 |
PROBLEM TO BE SOLVED: To detect the error of a reception packet without the need of an expensive externally mounted circuit which is used for CRC(cyclic redundancy checksum) calculation, for example. SOLUTION: A serial/parallel(S/P) conversion circuit 110 converts inputted reception data into parallel data in accordance with a timing signal which a timing generation circuit 120 generates and outputs it to a CPU 130. The CPU 130 refers to data inputted from the S/P conversion circuit 110, retrieves prescribed diagnosis information stored in a memory 140 such as CRC and PN(pseudo random number) codes. An error detection means compares prescribed diagnosis information such as the CRC and PN codes with CRC and PN codes in reception data and executes the error detection processing of the reception packet. |
