Circuit Board Switch for Graphics Card Energy Saving
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Solution Overview
Problem
Existing circuit boards require manual line-jumping and disassembly of the host casing to support graphics cards with energy-saving functions, which is inconvenient.
Innovation Solution
A circuit board design that includes a platform controller hub, a peripheral component connector, and a switch controlled by a GPIOB pin, which selectively connects or disconnects a line between the connector pin and the clock request pin to support energy-saving modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual line-jumping is used to support graphics cards with energy-saving function, then the graphics card compatibility is improved, but the operation convenience deteriorates due to required host casing disassembly
Solution Approach 1:
The circuit board automatically detects the graphics card type through the detection circuit and selectively activates the corresponding clock signal transmission path without requiring manual intervention. The system performs self-configuration based on detected card characteristics, eliminating the need for users to disassemble the host casing and perform manual line-jumping operations.
2Reliability
If manual line-jumping is required, then precise clock signal routing is achieved, but the device complexity increases due to additional manual configuration steps
Solution Approach 1:
A detection circuit and control circuit are introduced as intermediaries between the graphics card and the clock signal transmission paths. The detection circuit identifies the graphics card type, and the control circuit automatically selects and activates the appropriate clock signal path based on the detection results, thereby achieving precise routing without manual configuration.
Solution Approach 2:
The manual mechanical line-jumping process is replaced with an automated electrical detection and control system. The system uses electrical signals to detect card type and automatically switches between different clock signal transmission paths, eliminating the need for physical manual configuration while maintaining routing precision.
3Adaptability or versatility
If the clock signal is continuously transmitted to support all graphics card types, then compatibility is improved, but energy consumption increases
Solution Approach 1:
The clock signal transmission path is dynamically activated based on the detected graphics card type. The control circuit selectively enables only the necessary clock signal paths after detection, rather than continuously transmitting clocks to all potential destinations. This dynamic activation reduces unnecessary energy consumption while maintaining support for both energy-saving and non-energy-saving graphics cards.
Data Source
AI summary
A circuit board includes a platform controller hub (PCH), a peripheral component connector and a switch. The PCH includes a clock request pin and a GPIOB pin. The peripheral component connector includes a connector pin. The switch is controlled by the GPIOB pin and is coupled between a low potential and a line between the connector pin and the clock request pin and is configured to: conduct the line and the low potential based on a high potential of the GPIOB pin; and disconnect the line and the low potential based on the low potential of the GPIOB pin.