| 摘要 |
A control method of the present invention comprises: a step for predetermining a priority level for accessing a slave via a bus with respect to a plurality of bus masters, as a basic priority; a step for determining a reference access frequency with respect to the plurality of bus masters, based on a required transfer rate; a step for counting an actual valid access frequency for each of the plurality of bus masters; a step for measuring a predetermined reference time; a step for determining an actual access priority of the plurality of bus masters based on the reference access frequency of the plurality of bus masters, the valid access frequency within the reference time, and the basic priority; and a step for granting access permission with respect to the plurality of bus masters, according to the actual access priority.
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