| 摘要 |
PURPOSE:To receive a variable frame signal of an optional length without a complicated chain processing by designating an address in a unit length area by a counter for counting a byte number of a receiving frame signal, reading out the next dead area number when a value of the counter concerned reaches the byte number of the unit length area, and writing continuously the receiving frame signal in the designated unit length area. CONSTITUTION:A receiving frame signal inputted from a serial data input terminal IN is written in an address designated by a counter 3 of a unit length area designated by a register 2. When a count value of the counter 3 reaches a byte number of a unit length area of a receiving buffer BUFF, it is informed to a control circuit 4 by a count end signal 102, the counter 3 is cleared, and also the next area number is read out of a first-in/first-out register 1 and set to the register 2. |
