| 摘要 |
PROBLEM TO BE SOLVED: To store even the serial data of the final cycle that are smaller than the number of bits of parallel data with no loss and then read the serial data into and out of a line memory which stores the inputted serial data after converting them into the parallel data. SOLUTION: The line memory device 100 includes a line memory macro 101 which uses serial/parallel conversion, a shift register 111 which has its capacity equal to the bit width of the data to be converted into the parallel data, a selector 109 and a control block 110 which controls the register 111 and selector 109. In such a constitution, it is possible to store all digital signals S102 in the memory 100 and then to read them out with no loss by storing the data (which cannot be stored in the macro 101) of the final cycle whose signals S102 are smaller than the number of bits of serial/parallel conversion into the register 111.
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