Master Device Request Control Circuit Power Management
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Solution Overview
Problem
System-on-chip (SOC) technologies face challenges in reducing power consumption while maintaining performance, as increased integration of components leads to higher power consumption without sufficient operational speed improvements.
Innovation Solution
A master device and method that control the power level of the request control circuit based on measured service levels, specifically by adjusting the number of outstanding requests and using dynamic voltage and frequency scaling, to reduce power consumption without affecting performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the integration degree of SOC is increased by integrating additional components into one chip, then the functionality and component density are improved, but the power consumption is increased
Solution Approach 1:
The patent implements dynamic power management by making the request control circuit's operational state variable rather than fixed. The circuit dynamically adjusts its activity based on real-time service level measurements, transitioning between active and reduced-power states to match actual system needs.
Solution Approach 2:
The patent changes the power level parameter of the request control circuit based on measured service levels. By adjusting power consumption as a variable parameter rather than maintaining a constant high-power state, the system achieves lower overall power consumption while maintaining necessary functionality.
2Productivity
If the number of integrated IP devices and operational speed are increased, then the performance level is improved, but the power consumption is increased
Solution Approach 1:
The patent applies partial action by having the request control circuit operate at full capacity only when service levels indicate genuine need. Otherwise, the circuit operates at reduced capacity, avoiding excessive power consumption while maintaining sufficient performance for actual workload requirements.
Solution Approach 2:
The patent implements a feedback mechanism where service level measurements inform power level adjustments. The system continuously monitors performance metrics and uses this feedback to dynamically adjust the power consumption of the request control circuit, ensuring power is consumed only when performance benefits are achieved.
3Loss of energy
If the power level of the request control circuit is reduced to decrease power consumption, then the energy efficiency is improved, but the service level may be degraded
Solution Approach 1:
The patent uses service level measurements as feedback to determine appropriate power levels. This closed-loop control ensures that power consumption is reduced only when service levels indicate the system can tolerate the reduction, maintaining reliability while improving energy efficiency.
Solution Approach 2:
The patent makes the power level dynamic rather than static, allowing the system to adapt power consumption to actual service requirements. This dynamic adjustment prevents both over-consumption and under-performance by continuously matching power levels to service needs.
Data Source
AI summary
A method of controlling a master device includes, providing a measured service level by measuring a service level with respect to requests of a master device that is connected to a slave device through an interconnect device and generates the request to demand services from the slave device and controlling a power level of a request control circuit included in the master device based on the measured service level. Power consumption of the master device and the system including the master device is reduced without performance degradation by controlling the power level of the request control circuit adaptively based on the measured service level.