| 摘要 |
<p>PURPOSE:To decrease the ineffective part of a data signal by setting the value of a pointer for a transmitted frame within one frame after the value of the pointer for a received frame is changed. CONSTITUTION:A frame memory 1, write control circuit 2, read control circuit 3, pointer detection circuit 4, pointer buffer 5, selector 6, selector control circuit 7, reception side frame counter 8, transmission side frame counter 9, down counter 30, buffer 31 for address storage and comparator 32 are provided. Even when the value of the pointer in the received frame is changed, phase difference with the new pointer is detected before the pointer of the transmitted frame is generated. Accordingly, the new pointer value is generated in one frame, namely, after the phase difference between the received frame and transmitted frame. Thus, the ineffective part of communication data can be decreased.</p> |
