| 摘要 |
PROBLEM TO BE SOLVED: To implement a small scale mechanism for inputting/outputting data to/from a memory at high speed having always high priority for a built-in memory of a processor.SOLUTION: An information processing apparatus includes a processor for executing pipeline processing to instructions, a memory built in the processor, and an input/output control means for accessing the memory with high priority. A memory access arbitration method includes the steps of suspending clock supply to the processor when accesses to the memory from the processor and the input/output control means compete (S512), executing the access to the memory from the input/output control means (S506), and releasing the clock wait of the processor after the access to the memory from the input/output control means ends and executing the access to the memory from the processor (S507, S511). |
