MCU-based ACPI management method, system and device

Abstract

The invention provides an MCU-based ACPI management method, a system and a device. The method comprises the steps: 1, carrying out the power supply of an industrial control mainboard PSU, and enabling the MCU to initially work based on a management power supply; 2, the MCU judges the power management mode of the single-board CPU by continuously detecting MB_Mode_sel signals; 3, the industrial control mainboard PSU outputs an enabling instruction based on the MCU, and general voltage power supply to the load non-memory power supply and / or the load memory power supply is executed; 4, outputting multiple paths of different power supply enable signals through instruction adjustment of the MCU. The MCU is adopted to replace a SuperIO + logic circuit, the method has the advantages of high software and hardware integration level, flexible time sequence adjustment, short development and debugging period and low hardware development cost, and the problems that a traditional SuperIO + CPLD is complex in control logic, large in development and debugging difficulty, long in period and high in hardware cost are fundamentally solved.

Description

technical field [0001] The invention relates to the field of powering on computer motherboards in the industrial control industry, in particular to an MCU-based ACPI management method, system and equipment. Background technique [0002] During the power-on process of computer motherboards in the industrial control industry, the status of the single board and power management need to meet the ACPI (Advanced Configuration and Power Interface, advanced configuration and power interface) standard specifications. [0003] For motherboards that support suspend to memory, the power supply of the motherboard is usually divided into management power, load non-memory power, and load memory power. Currently, there are two main solutions for implementing ACPI management: [0004] The first solution is to use SuperIO to cooperate with CPLD (Complex Programming Logic Device, complex programmable logic device) to realize single-board status and power management during power-on. Among the...

AI Technical Summary

Problems solved by technology

Among them, SuperIO implements single-board S-state management, and discrete components implement single-board power supply timing control. However, for complex load non-memory power motherboards, power supply timing often requires ms-level front and rear timing requirements, and discrete component solution debugging is often time-consuming and laborious. , the development and debugging progress takes a long time, and after the PCB design is completed, the time interval between multiple power planes usually cannot be modified in a wide range, and it is difficult to meet the current increasingly complex timing control requirements

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