| 摘要 |
PURPOSE:To avoid a fault caused by the wrong data by providing a function to detect an error of data and inhibiting the latch of the fetched data in case a data error is detected and also informing the detecting result of the data error to a microcomputer. CONSTITUTION:It is checked whether the data to be fetched by an SIPO circuit 101 contains an error or not. If a data error is detected, the latch of data is inhibited to a latch circuit 102. Accordingly, a malfunction that is caused by a fact that the wrong data is latched by the circuit 102 is prevented. In addition, as the detecting result of the data error is sent to a microcomputer, it is possible to transfer again a command from the microcomputer in case of occurrence of a data error.
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