Processing unit with adjustable operation frequency and relative method

Abstract

The present invention provides a kind of processing unit with adjustable operation frequency and its relative method. The processing unit includes one clock module to provide reference clock; and one processing kernel coupled to the clock module to process one first command based on the reference clock. The clock module includes one multiple phase clock generator to generate several original clock signals with different phases; and one phase selector coupled to the multiple phase clock generator and the processing kernel so as to select one original clock signal based on the first command to generate the reference clock.

Description

technical field [0001] The invention relates to a processor, in particular to a processing unit with adjustable operating frequency and a related method. Background technique [0002] Processor (processor) is a very important component in a computer system. It can extract (fetch) program instructions and data from the system memory, perform logic operations or mathematical operations related to program instructions on the extracted data, and perform operations The resulting results are stored back in system memory. Generally speaking, measuring the time required for a processor to process a specific job (or program) can represent the execution efficiency (performance) of a processor, and the time required for a processor to process a program can be expressed as: (program The number of instructions contained in ) × (the clock cycle required for each instruction) × (the length of a clock cycle). Therefore, the execution efficiency of the processor will be determined by vario...

AI Technical Summary

Problems solved by technology

[0004] For example, most processors will at least divide the instruction processing program into an instruction fetch (instruction fetch) stage, a decoding (decode) stage, an execution (execution) stage, and a write back (write back) stage, and Usually the execution phase requires the most processing time, so when designing a processor, the clock cycle of the system clock is generally designed to be available for the execution phase to process more complex instructions (because this is usually the speed bottleneck of the processor) Length, if the clock cycle used is too short, when the processor processes instructions that require a long execution time, there will be execution errors or execution failures (fail)

Images