Register file reading and isolating method controlled by asynchronous clock

Abstract

The invention belongs to the technical field of microprocessors and particularly relates to a register file reading and isolating method controlled by an asynchronous clock. The method includes the steps of detecting whether read operation needs to be conducted on a register file or not when having access to a flow level of the register file on the basis of a microprocessor framework with a basic flow line structure, and keeping the read address of the register file unchanged through a partial asynchronous clock network if the read operation conducted on the register file is found to be useless, namely, an instruction does not need to have access to the register file, or the required operation number can be obtained through a feedback network. Due to the fact that the read operation of the register file is read asynchronously, if the address is kept unchanged, the corresponding logic can not be turned over, and useless register file reading power consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of microprocessors, and in particular relates to an asynchronous clock-controlled register file read isolation method. Background technique [0002] The register file is the first-level storage unit in the processor and the core component of a modern microprocessor. Because the access to the register file is characterized by high speed and high frequency, the power consumption and power consumption density of the register file are quite large. , so that it has become the main component of energy consumption and power consumption hotspot of the microprocessor. High energy consumption poses a challenge to microprocessors, especially those in the embedded application field, and power consumption hotspots will lead to a decrease in circuit stability and life. Therefore, research on reducing the power consumption of the register file has very important practical significance. [0003] figure 1 Shows the tradit...

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Problems solved by technology

[0004] In the traditional microprocessor architecture, there is no special circuit to isolate the read of the register file. Even if a useless read operation is found during the actual instruction execution, the read operation of the register file will not be shielded, resulting in unnecessary For this shortcoming, it is necessary to detect the read of the register file, and once a useless read operation is found, the read of the register file is shielded to reduce power consumption

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