Information processing device, image display device, and information processing method

Abstract

An information processing device includes: a first processing unit which asserts a first chip select signal or a second chip select signal in accordance with an address space to access; and a second processing unit accessible by the first processing unit by a first access method or a second access method, wherein when asserting the first chip select signal, the first processing unit accesses the second processing unit by the first access method, and when asserting the second chip select signal, the first processing unit accesses the second processing unit by the second access method.

Description

technical field [0001] The present invention relates to an information processing device, an image display device, an information processing method, and the like. Background technique [0002] In recent years, functions of circuit systems serving as information processing devices have become more complex in response to user demands for higher functionality. Therefore, a plurality of integrated circuits integrating processing circuits and the like for realizing various functions are mounted on the circuit system. In general, integrated circuits such as a central processing unit (Central Processing Unit: CPU) and an interface circuit are mounted on this circuit system, and the integrated circuits are connected to each other via a bus. [0003] In such a circuit system, for example, the CPU accesses other integrated circuits for control to achieve expected functions. When the CPU accesses other integrated circuits, the CPU outputs a chip selection signal as a device selection...

AI Technical Summary

Problems solved by technology

Therefore, when the device can be accessed by multiple access methods, it is necessary to rewrite the access time in the control register, etc. by software, and there is a problem that the access method cannot be switched at high speed.

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