Pipeline Gating Circuit With Bypass Modes for Speed-Power Tradeoffs
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Solution Overview
Problem
Current digital circuit designs face challenges in meeting low power consumption demands as circuit complexity and operation speed increase.
Innovation Solution
A pipeline circuit with a gating circuit that allows selective operation in two modes: one with gating and one without, enabling flexible timing and power consumption adjustment through bypassing gating circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If gating circuits are used in pipeline design to meet timing constraints, then computation speed is improved, but power consumption increases
Solution Approach 1:
The patent applies dynamics by making the gating circuit's operation mode adjustable rather than fixed. The gating circuit can dynamically switch between two modes: a first mode where it gates the input signal to output as the output signal (providing timing control), and a second mode where it passes the input signal through without gating (reducing power consumption). This dynamic adaptability allows the system to optimize between speed and power consumption based on real-time timing constraint requirements.
2Measurement precision
If gating circuits operate in first mode to provide timing control, then timing precision is improved, but power consumption increases
Solution Approach 1:
The patent implements parameter changes by allowing the gating circuit to change its operational state based on timing constraint requirements. When high timing precision is needed, the gating circuit operates in the first mode with full gating control. When timing constraints are looser, it switches to the second mode with reduced gating, thereby changing the parameter of gating intensity to balance timing precision and power consumption.
3Productivity
If pipeline design complexity increases to meet higher operation speeds, then productivity is improved, but power consumption increases
Solution Approach 1:
The patent applies segmentation by dividing the pipeline stages into segments with adjustable gating circuits. Each gating circuit can independently operate in different modes, allowing selective optimization of each pipeline stage. This segmentation enables the system to achieve high operation speeds in critical paths while maintaining lower power consumption in less critical stages, thereby improving overall productivity without proportionally increasing power consumption.
Data Source
AI summary
A pipeline circuit and a pipeline operating method are provided. The pipeline circuit includes a gating circuit that is configured to receive an input signal at an input end and selectively output the input signal as an output signal at an output end. In a first mode, the gating circuit receives the input signal that has been gated to output as the output signal. In a second mode, the gating circuit receives the input signal to output as the output signal.