| 摘要 |
PURPOSE:To easily execute an operation test of an error processing circuit by providing a logic circuit for taking logic of a signal generated from an error detecting circuit, and a signal generated from a pseudo error generating part, and outputting its result to the error processing circuit. CONSTITUTION:In case of executing an operation test of an error processing circuit 2, a pseudo error generating part 1A is operated from the outside by using a shift path, and from the generating part 1A, a pseudo error generating signal 6, namely, a level signal of '1' is outputted. When this signal 6 is outputted, a logic circuit 1B consisting of an OR circuit outputs the '1' level signal being its OR to the circuit 2, irrespective of an error generating signal 4 outputted from an error detecting circuit 1. In this case, the circuit 2 executes a prescribed processing, based on the '1' level signal being the signal 6. As a result, an operation test of the circuit 2 can be executed. |
