Serial Interface Bandwidth Scaling for Lower Link Power
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Solution Overview
Problem
Existing systems face challenges in efficiently managing bandwidth and power consumption of device interfaces in electronic devices, particularly in transporting data between processor core complexes and peripheral devices.
Innovation Solution
A device interface with dynamically adjustable bandwidth and power consumption, where transmission and reception channels are activated or deactivated based on desired bandwidth, using transmission channels and reception channels to optimize data transfer and reduce power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transmission channels are activated to increase bandwidth, then data transfer capability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic bandwidth adjustment by allowing the system to change the number of active transmission channels based on real-time data transfer requirements. The transmitter and receiver can dynamically activate or deactivate individual channels, enabling the system to adapt between high performance modes (multiple channels active) and low power modes (fewer channels active), thus resolving the contradiction between data transfer capability and power consumption
Solution Approach 2:
The system changes the operational parameter of bandwidth by adjusting the number of active transmission channels. This parameter change allows the system to match the actual data transfer needs with the available channel capacity, avoiding unnecessary power consumption when full bandwidth is not required while maintaining the ability to achieve high data transfer rates when needed
2Speed
If all transmission channels are always active, then data transfer speed is maximized, but power consumption cannot be reduced
Solution Approach 1:
The system transitions from a static configuration where all channels are always active to a dynamic configuration where channels can be activated or deactivated based on actual data transfer needs. This dynamic adjustment allows the system to maintain maximum data transfer speed when required while significantly reducing power consumption during periods of lower data transfer demand
Solution Approach 2:
The system employs periodic or event-driven activation of transmission channels based on data availability and transfer requirements. Rather than continuous operation, channels are activated periodically or in response to specific data transfer events, reducing overall power consumption while maintaining the capability for high-speed data transfer when data is available
Data Source
AI summary
This disclosure is directed to dynamic power management of a device interface based on a desired bandwidth for transporting data by the device interface. A device interface may packetize and transport raw data to a processor core complex or a peripheral device. In different embodiments, the peripheral device or the processor core complex may generate the raw data. The peripheral device and/or the processor core complex may increase or decrease a data bandwidth of the device interface for transporting the data. In different cases, the peripheral device or the processor core complex may dynamically activate and deactivate a different number of data links of the device interface based on dynamically determining the desired bandwidth. The peripheral device and/or the processor core complex may reduce a power consumption of the device interface by dynamically deactivating one or more of the data links based on the desired bandwidth being below the data bandwidth of the activated data links.