| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiple transaction bus system by improving an advanced micro control bus structure system (AMBA). SOLUTION: This immediate permission bus arbiter (300) realizes the multiple transaction bus system, A bus bridge is a means for connecting two separated buses and securing data integrity, is defined by a clear master/slave protocol and is usually related to the use of two arbiters. An arbiter on a primary bus has to operate separately from an arbiter on a secondary bus due to the constraint of real system time. The main bus arbiter (300) that enables a main bus master (351) to receive control immediate permission on a bus is defined. Even though other masters (352, 353 and 354) having low priorities make a bus request, the immediate permission bus arbiter (300) never gives the bus. Thus, predictable real time transfer is made possible.
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