| 摘要 |
PURPOSE:To store time-variable data and time-invariable data together on the same memory and to reduce the size and cost by storing both time-variable data and time-invariable data corresponding to time-division channels in data areas having addresses corresponding to respective time-division channels. CONSTITUTION:In the data areas of a RAM 25 having addresses corresponding to the time-division channels, the time-variable data and time-invariable data corresponding to the time-division channels are both stored; and the time- variable data is stored in, for example, the high-order bits of a data area of each address and the time-invariable data is stored in the low-order bits. The time-variable data and time-invariable data which are read out of the RAM 25 by the time-division channels at the same timing and while the time-variable data is processed, the time-invariable data is held by a holding means, so that the time-variable data and time-invariable data of the respective time-division channels can be stored on the same RAM 25 at the same timing. |
