| 摘要 |
PROBLEM TO BE SOLVED: To shift data fast with nearly no additional delay time by inputting a double-word input for filling data and the data to be shifted and then multiplexing and outputting them in parallel. SOLUTION: A 1st multiplexer 100 receives the double words for filling the space of shifted data and the data to be shifted and outputs the filling data with filling data control signals C1 and C2 and a 2nd multiplexer 112 receives the filling data and data to be shifted from the 1st multiplexer 100 and selects the bits, etc., of inputted data and filling data with a shift control signal M0. A 3rd multiplexer 118 selects the filling data selected by the 2nd multiplexer 112 and the data to be shifted with shift control signals M1 and M2 and a 4th multiplexer 124 selects the data outputted from the multiplexers 118 and 110 with a control signal H and outputs them. |
