| 摘要 |
PROBLEM TO BE SOLVED: To generate parallel data with arbitrary word lengths.SOLUTION: A waveform memory 66 stores a data sequence constituted of M-bit parallel data. A sequence memory 60 stores sequence information and data cancellation information showing how many pieces of data are canceled from the last data in the data sequence. A sequence 62 and a waveform memory control circuit 64 read the data sequence from the waveform memory 66 using the sequence information. A barrel shifter 68 shifts data in the next data sequence of the data sequence by J bits when the number of effective bits in the last parallel data of the data sequence becomes M-J by data cancellation or data shift based on the data cancellation information. A data shift control circuit generates data-enable showing the validity or invalidity of the data in the data sequence based on the data shift and the data cancellation information. A coupling circuit 72 couples valid data in the data sequence using the data-enable. |
