Processor component and method for memory sharing of the component

Abstract

The invention provides a processor component. The processor component comprises a memory, a coprocessor component and an application processor component, wherein the memory comprises a coprocessor component access area, an application processor component access area and a shared area; the coprocessor component comprises a coprocessor and a first memory arbiter; the coprocessor sends a read / write access request with priority access information; the first memory arbiter receives the access request sent by the coprocessor; the application processor component comprises a coprocessor controller, an application processor, a second memory arbiter and a memory controller; the coprocessor controller receives the access request sent by the first memory arbiter; the application processor sends the read / write access request with the priority access information; the second memory arbiter receives the access request sent by the coprocessor controller or the application processor and sequences the access request according to a priority level; and the memory controller receives the access request sent by the second memory arbiter and accesses the corresponding area of the memory. The invention also provides a memory sharing method of the processor component.

Description

technical field [0001] The invention relates to a processor, in particular to a structure of an application processor and a coprocessor in an embedded system and a memory sharing method. Background technique [0002] With the development of computer microprocessor and network technology, the function of embedded system becomes more and more powerful, and the scope of application is more and more extensive. In embedded systems, many additional functions exist in the form of peripheral circuits of the processor, so a large number of discrete components are required, and various types of input and output expansion are required. The processor also needs to increase the structure of the interface accordingly. , the structure is more complex and difficult to realize. [0003] The emergence of coprocessors solves this problem. However, usually, in embedded systems, coprocessors and application processors are provided with their own corresponding memory controllers and memory, and ...

AI Technical Summary

Problems solved by technology

Because the memory corresponding to the two processors is independent of each other, it is not convenient for mutual access between the two processors

In addition, because the memory required by the coprocessor is generally small, if a memory is configured separately for the coprocessor, it often does not occupy the entire capacity of the memory when used, which will cause waste of memory usage, which is not conducive to Reduce the cost

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