CIRCUIT FOR USING SHARED MEMORY, AND METHOD OF STORING DETERMINATION RESULT OF ARBITRATION CONTENT OF ARBITRATOR OF THIS CIRCUIT

摘要

According to an embodiment, a circuit for using a shared memory is provided, which has a plurality of function circuits, a bus, an arbitrator, and a communication measuring device. Each of a plurality of the function circuits performs a prescribed calculation. The bus communicates an input/output signal of each of the function circuits. The arbitrator assigns a use right of the bus to each of the function circuits. The communication measuring device measures a communication time of each of the function circuits, determines whether or not the measured communication time is within a range of a reference communication time set for each of the function circuits, and stores this determination result in a determination result storage device accessible from outside.

主权项

1. A circuit for using a shared memory comprising;
a plurality of function circuits, each of which performs a prescribed calculation; a bus to communicate an input/output signal between the bus and each of the function circuits; an arbitrator to assign a use right of the bus to each of the function circuits; and a communication measuring device which measures a communication time of each of the function circuits, determines whether or not the measured communication time is within a range of a reference communication time set for each of the function circuits, and stores the determination result in a determination result storage device accessible from outside.