| 摘要 |
<p>An asynchronous circuit (150) which is a first asynchronous circuit starts a process in response to the rising of a permission signal (al), raises a process completion signal (out) when the process is complete, and falls the completion signal (out) in response to the falling of the permission signal (al). A process start signal (satrt) which is an inversion signal of the process completion signal (out) is input to a control circuit (110) together with a clock signal (CLK). When both the start signal (start) and the clock signal (CLK) rise, the control circuit (110) raises the permission signal (al). When both the start signal (start) and the clock signal (CLK) fall, the control circuit (110) falls the permission signal (al). Thereby, while suppressing the increase of a circuit scale, processing speed of the asynchronous circuit can be maintained at a constant rate.</p> |
