System on a chip (SoC) system clock control method and SoC

Abstract

The invention discloses a system on a chip (SoC) system clock control method and a SoC. According to the SoC system clock control method and the SoC, when an executive module or a function module is carried out an internal arithmetic or is interacted with the other modules, a processor does not participate in a clock control any more, the executive module is used for controlling, and a smaller unit is used for controlling, that is a plurality of transmission (Trans) operations under an operation are used for driving. An idle phase among the operations corresponds to a dry running of an original method, and the executive module does not operate any more, so that a control signal can be generated through the executive module according to an actual working condition, a clock signal required by the executive module is generated precisely, dry running states of the executive module are reduced to reduce times of circuit flip, and power dissipation of the SoC is effectively reduced.

Description

technical field [0001] The invention relates to a SoC system clock control method and a SoC applying the method. Background technique [0002] SoC is System on Chip, system on chip or system-on-chip, which refers to an integrated circuit that contains a complete system. [0003] With the development of technology, the integration level of SoC is getting higher and higher, and the power consumption is also increasing. Reducing SoC power consumption is not only a matter of reducing energy consumption, but also involves the heat dissipation design of the system. Therefore, reducing power consumption It has become an important topic in IC design today. [0004] In an SoC system, there are various ways to reduce power consumption, among which controlling clock switches to reduce circuit flipping is the main way to reduce power consumption. The increased circuit area in this way is relatively small, and the additional loss is relatively small. [0005] In SoC, such as figure 1...

AI Technical Summary

Problems solved by technology

This method still requires the master device or the processor to control the clock signal, which cannot fundamentally solve the technical problem in the first aspect above.

Images