| 摘要 |
Processing ability can be easily decreased in a processor connected by a bus to a device that is a bus master. A controller of an electronic device has a processor and a bus controller that is the bus master of the processor, the bus controller including a mode determining section that determines mode based on a state of the processor, and a performance controller that, for a prescribed mode, inserts a wait time in an acknowledgement signal to be output to the processor.
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