| 摘要 |
<p>An overflow signal (OVF) of a counter (41) is used such that a time of overflow occurrence is a checkpoint, and the data at that time(for example, a signal (A), a control signal (V_A) and a counter value) are stored in a debug storing part (32). That is, for example, the control signal (V_A) and overflow signal (OVF) are inputted to an OR circuit (42), an output signal (a) of which is used to control the data storage and shift operation of the debug storing part (32). In this way, not only when the control signal (V_A) exhibits "1" but also at the time of overflow occurrence, the data (signal (A) and counter value at that time) are stored in the debug storing part (32).</p> |
