Design method of programmable management of multiple power supply domains

Abstract

The invention discloses a design method of programmable management of multiple power supply domains. The method includes: selecting an instruction source of controlling the multiple power supply domains through register configuring, namely generating a control instruction by internal software programming or generating the control instruction by external equipment; sending the control instruction to a control execution unit after it is judged, through parsing, that the control instruction is a valid instruction; and carrying out turning-on or turning-off control on a power supplying switch to the controllable power supply domain by the control execution unit according to the received parsed instruction. According to the design method, flexibility of management on the controllable power supply domains is improved, an application scene can be more tightly combined to shut down the controllable power supply domain, which is in a chip and does not need to work, in time, and power consumption is highly effectively reduced. At the same time, the external triggering source and a communication unit share one external IO port, and chip hardware resources are saved.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a design method for programmable management of multiple power domains. Background technique [0002] After the development of integrated circuit technology to deep submicron nodes, power consumption has become a restrictive factor in the design of large-scale integrated circuits. In particular, the static power consumption of the chip accounts for an increasing proportion of the total power consumption. Effectively reducing static power consumption can prolong system standby time and battery life. [0003] According to related technologies, it has become a common practice in the design of large-scale integrated circuits to divide a chip into multiple power domains and control them so as to cut off the power supply of power domains that do not need to work. However, the existing multi-power domain management methods mainly use a hardware state machine to control the power supp...

AI Technical Summary

Problems solved by technology

Once the chip is designed and produced, the working status of the power domain cannot be modified, and the power domain cannot be flexibly managed according to different application scenarios.

In addition, the existing multi-power domain management method is mainly that the chip actively controls the working status of the power domain according to the working situation, and cannot turn off or turn on the designated power domain in time according to the external environment or the working requirements of the equipment.

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