| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem in which; in a multi-master bus system having a hierarchized bus structure, a writing master notifies another reading master without waiting for a write reply from a shared memory device depending on a pathway for writing data and a pathway for reading data, and even if data is read, execution sequence of write transaction and read transaction can be secured, while always waiting for the write reply from the shared memory device unnecessarily loses performance. <P>SOLUTION: When handing over of data is performed through a shared memory between two masters in a multi-master bus system having a hierarchized bus structure, sequence of write access and read access is secured, by making an optimal slave generate a write reply according to a pathway for writing data and a pathway for reading data. <P>COPYRIGHT: (C)2012,JPO&INPIT |
