| 摘要 |
<p>PURPOSE:To reduce the load of a microprocessor serving as a control means by applying an interruption to the microprocessor when the channel end of the voice data is detected. CONSTITUTION:The interruption bits are always inputted to a channel end detecting means 55 from a memory means 51. The means 55 detects the end of a channel by the interruption bit and outputs an interruption signal to a microprocessor (muP)53 serving as a control means 53. The means 55 contains a circuit which stores the channels arrived at their ends respectively. The muP53 discriminates a channel arrived at its end and allows an address instructing means 52 to instruct the start address of the channel voice data stored in a register of the means 55 as the next reading address. In such a way, the load of the muP53 serving as a control means can be reduced.</p> |
