| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a circuit that automatically adjusts dispersions in a signal transmission time in a long distance signal transmission system as a system especially between LSIs. SOLUTION: A variable delay control circuit 5 measures a difference in delays between a selector output signal 102 and a received signal 106 resulting from the selector output signal 102 that passes through a variable delay circuit 3, an input output buffer 6, a transmission line 8, and is reflected in a receiver side LSI terminal 12 and returns through the transmission line 8 and the input output buffer 6 again. Thus, delays in the input output buffer 6 and in the transmission line 8 are checked and a delay in the variable delay circuit 3 is adjusted so as to obtain a delay as a setting value of the system.</p> |
