| 摘要 |
PURPOSE:To shorten the input and output time required for serial signals by setting the serial input and output circuits of a digital signal processor to the circuit composition which directly inputs and outputs as an analog signal. CONSTITUTION:The analog signal such as voice from the outside, which is inputted to the analog signal input terminal 46, is inputted to the A/D converter 42, converted to the digital signal, and inputs parallel data to ACC41 as they stand by the analog control clock. In other words, the analog signal from the outside is directly inputted to ACC41 without passing D.Bus24. On the other hand, the output signal of ACC41 is directly connected to the D/A converter, and therefore, the analog signal is outputted from the output terminal 47 by inputting the analog signal output control clock to the input terminal 48 in outputting the operation results to the outside after they are latched on ACC41. As a result, data processing time can be shorten to about 1/bit length. |
