| 摘要 |
PROBLEM TO BE SOLVED: To perform channel accumulation of external input data without providing any adder. SOLUTION: A multiplication part 20-1 of a DSP 20 multiplies the external input data from an external input part 21 by level control data and the multiplication result is stored in an 8-stage FIFO(first-in first-out) 19. At the start of a 1DAC(digital-to-analog converter), a selection part 18 selects the output from the 8-stage FIFO 19 and then an adder 15 adds it to waveform data of a 1st time-division channel. Then a selection part 18 selects the delay output from an 8-stage delay 16 and then the channel accumulation of the external input data and waveform data of 32 time-division channels is performed. |
