| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an integrated circuit for controlling a bus right acquisition request and approval such that a bus can be efficiently used, when an internal resource such as a memory can be directly accessed from a built-in debugging circuit. <P>SOLUTION: The integrated circuit includes: a bus; a processing unit executing a user program; and the debugging circuit transferring an instruction inside an instruction register to the processing unit via the bus in response to an instruction transfer request from the processing unit, connected to the bus. When the processing unit suspends the execution of the user program and performs the instruction transfer request to the debugging circuit, the debugging circuit performs a response for freeing a use right of the bus from the processing unit in a period between the instruction transfer request and instruction transfer operation. <P>COPYRIGHT: (C)2011,JPO&INPIT |
