Method, device and system for testing power consumption of subsystems in SOC system

Abstract

The invention discloses a method, a device and a system for testing power consumption of subsystems in an SOC system, and relates to the technical field of system chip testing. A method for testing the power consumption of subsystems in an SOC system, each subsystem is provided with an independent DCDC power supply, and the power management module controls the switch of the DCDC power supply to turn on or off, so that the target subsystem to be tested works under the DCDC power supply; and, An independent clock selection switch is set for each subsystem through the PLL control circuit, and the target subsystem to be tested works on the PLL clock by controlling the clock selection switch corresponding to each subsystem to be turned on or off. The invention can independently control the power supply and PLL clock of each subsystem, and control the output and shutdown of the power supply and PLL clock, so that the power consumption analysis of the subsystem becomes simple.

Description

technical field [0001] The invention relates to the technical field of system chip testing, in particular to a system power consumption testing method and application. Background technique [0002] At present, more and more embedded systems appear in daily life, especially the application of SOC (System On Chip). SOC chips are usually composed of many circuit modules or IP, including digital, analog, radio frequency and digital-analog hybrid circuits, etc., which have the characteristics of large scale, high integration, and small size. With the continuous evolution of SOC technology, the system performance is getting stronger and stronger, and the power consumption of the system is becoming more and more important. At present, system power consumption has become a key indicator to measure product competitiveness: the smaller the system power consumption, the longer the life, and the stronger the competitiveness. The power consumption of the system is mainly reflected in t...

AI Technical Summary

Problems solved by technology

As an example, see figure 1 As shown, for example, the SOC system can usually include various functional subsystems such as ARM (Advanced RISC Machines), DSP (Digital Signal Processing), GPU (Graphics Processing Unit) and peripheral control modules. The entire SOC system Power and clock are often not independently provided to each subsystem. Usually, a DCDC (DC voltage to DC voltage) power supply supplies power to multiple subsystems of the system. For example, the ARM subsystem and the DSP subsystem use the same DCDC (DC voltage to DC voltage) power supply. DC voltage) power supply, the same PLL (phaselocked loop phase-locked loop) clock may be used by multiple subsystems and SOC internal bus at the same time, it is difficult to decompose the power consumption of each module

[0003] On the other hand, various subsystems are often still in a cooperative working state. For example, when the GPU encodes and decodes video data, the DSP is processing data algorithms, and the ARM is cooperating with routine operations. Multiple subsystems are involved in the work. At this time, the power consumption may exceed At this time, it is also necessary to analyze which subsystem the power consumption of the system is mainly consumed in.

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