| 摘要 |
A delay apparatus includes a DLL circuit including a delay element, the DLL circuit generating a first control signal for controlling the delay element in order that the delay element delays a reference clock inputted into the delay element by one cycle, and a strobe delay element having a configuration identical to a configuration of the delay element, the strobe delay element delaying the strobe signal inputted from an outside by an amount of delay corresponding to a second control signal. The delay apparatus further includes a strobe delay controlling circuit obtaining the second control signal, from the first control signal and an expectation value for the amount of delay to be made by the strobe delay element, and a clock supplying circuit supplying the DLL circuit with the reference clock having a frequency higher than a frequency of the strobe signal.
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