| 摘要 |
PURPOSE:To prevent the load of a control section and the capacity of a buffer and a memory from being increased by transmitting/receiving a signal while code number is counted and applying prescribed processing when the number reaches a designated code number so as to quicken the effective transfer speed. CONSTITUTION:A counter circuit CTR counts the code number and acts like the counter circuit of an address of a buffer MB, and designates an address via a buffer control circuit MBC and outputs the result of count to a comparator circuit CMP. The comparator circuit CMP compares the result of count with a numeral commanded by the control section CPU in advance and when they are coincident, the result is informed to the control section CPU via a control bus (c). The information is transmitted by the control of the control circuit CPU. |
