CELL PHASE CHANGE CIRCUIT

摘要

PURPOSE:To automatically recover trouble after release of an input condition even at the time of abnormal write or read and to prevent the loss of cells to minimize an influence of trouble. CONSTITUTION:Input data 10 and a write-pulse 12 are written in a FIFO 1, and its contents are outputted by a read permission signal 30. The output of the FIFO 1 and a read pulse 21 are written in a register 230. A read control means 200 gives the read permission signal 30 to the FIFO 1 and the register 230 based on a read clock signal 21, a read pulse 22, a write pulse 24, and the read pulse held in the register 230 and gives a control signal 25 to a selector 210 to selectively output output data 20.