Receiving Device Mode Switching for Clock Power Reduction
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Solution Overview
Problem
Electronic receivers consume unnecessary power when clock generation blocks operate during periods without data transmission, leading to increased power consumption.
Innovation Solution
A receiving device with a reception circuit and a controller that determines operation modes based on data signals, turning off low-power receivers when not in use, and using synchronization signals to manage power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clock generation block operates continuously to maintain timing signals, then the receiver can always receive data when transmitted, but the receiver unnecessarily consumes power during periods when data is not generated
Solution Approach 1:
The receiver dynamically adjusts its operation mode between high-speed mode and low-power mode based on the operation mode signals received from the transmitter. The clock generation block and receiver are turned off when in low-power mode, and activated when high-speed mode is detected, allowing the system to adapt its power consumption to actual data transmission needs while maintaining reliable data reception capability when required
2Speed
If the receiver operates in high-speed mode continuously to ensure fast data transmission, then data can be transmitted at maximum speed, but power consumption increases significantly
Solution Approach 1:
The receiver switches between high-speed mode and low-power mode based on operational requirements. When high-speed data transmission is needed, the receiver operates in high-speed mode with the clock generation block active. When data transmission can proceed at lower speeds or is not currently occurring, the system transitions to low-power mode, significantly reducing power consumption while maintaining the capability to switch back to high-speed mode when required
Solution Approach 2:
The system changes the operational parameters of the receiver by switching between different operation modes (high-speed mode and low-power mode). This parameter change allows the receiver to adjust its clock generation frequency and power consumption levels to match the actual data transmission requirements, achieving optimal balance between transmission speed and energy efficiency
Data Source
AI summary
There is provided a receiving device including a reception circuit provided in a physical area and a controller provided in a logical area. The reception circuit generates data based on a differential signal received from a transmitter, and transfers the data to the logical area. The controller determines an operation mode based on the data, generates an operation control signal based on the operation mode, and transfers the generated operation control signal to the reception circuit.