| 摘要 |
PROBLEM TO BE SOLVED: To provide a serial/parallel interface capable of determining at what point of time an error occurred on output data. SOLUTION: The data set on an internal register are temporarily retained on a latch circuit after being read out, and the data retained on the latch circuit are read out. Serial data are read out interlockingly with the lack or excess readout clocks, readout is repeated according to the number of the data on the internal register, and the first readout data are compared with the second and subsequent readout data. If a difference is detected, it is judged that a noise is mixed in readout clocks. |
