| 摘要 |
PURPOSE:To allow the circuit to be restored automatically after an input condition is restored even when abnormal write or read is implemented and to minimize the effect of a fault less than a required effect. CONSTITUTION:An input data 10 and a write pulse 12 are written to an FIFO 1 based on a write clock signal 11 and the content of the FIFO 1 is read based on a read clock signal 21 and a read enable signal 30. A read control means 200 gives the read enable signal 30 to the FIFO 1 based on the write pulse 24 and the read pulse 22 from the FIFO 1 and gives a control signal 25 to a selector 210 to allow the FIFO 1 to select the read data 23 and a nonsignificant cell from a nonsignificant call generating means 220 and to output them. |
