Serial Receiver Wake-Up for High-Speed Link Data Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing serial communication link technologies face challenges in accurately detecting high-speed data transmission modes, leading to potential loss of data due to inadequate receiver circuit configurations, which can result in re-transmission and increased latency when switching between idle and high-speed modes.
Innovation Solution
A receiver subsystem comprising a signal detection circuit, speed detection circuit, and data receiver circuit is employed to monitor the communication link, detecting the presence of high-speed data by comparing signal magnitudes to a reference voltage and determining transition rates, thereby activating appropriate subcircuits to prevent data loss and ensure proper sampling and recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If receiver circuit components are kept powered down during idle mode to save energy, then energy consumption is reduced, but data detection capability is lost when high-speed data arrives
Solution Approach 1:
The system performs preliminary detection of signal presence and transition rates before fully activating receiver circuit components. This allows the system to prepare for high-speed data reception in advance, ensuring reliable detection while minimizing energy consumption during idle periods.
Solution Approach 2:
The receiver circuit components dynamically transition between powered down and powered up states based on detected signal characteristics. This dynamic adaptation allows the system to optimize energy consumption while maintaining data detection capability when needed.
2Reliability
If receiver circuit components are powered up continuously to ensure data detection, then data detection capability is maintained, but energy consumption increases
Solution Approach 1:
The system performs preliminary detection using minimal circuitry before activating full receiver components. This preliminary action ensures data detection capability is maintained while avoiding continuous powering of all components.
Solution Approach 2:
The system uses partial action by activating only the necessary subcircuits based on detected signal characteristics. Instead of powering up all components continuously, only the required portions are activated, reducing energy consumption while maintaining adequate detection capability.
3Measurement precision
If signal detection threshold is set low to detect weak signals, then detection sensitivity is improved, but false detection of noise increases
Solution Approach 1:
The system performs preliminary detection of signal presence before committing to full data reception. This two-stage approach allows sensitive detection of weak signals while providing a verification step to filter out false detections from noise.
Solution Approach 2:
The system uses feedback from the detection circuits to verify signal presence and characteristics before activating full receiver functionality. This feedback mechanism helps distinguish between actual signals and noise, reducing false detection rates.
4Reliability
If all receiver subcircuits are activated immediately upon signal detection, then data recovery reliability is improved, but activation time and latency increase
Solution Approach 1:
The system performs preliminary detection and verification of signal characteristics before activating all receiver subcircuits. This preliminary action reduces unnecessary activations and decreases latency while maintaining data recovery reliability for genuine high-speed data signals.
Solution Approach 2:
The system activates only the necessary subcircuits based on detected signal characteristics rather than activating all subcircuits immediately. This partial activation approach reduces latency while maintaining adequate data recovery reliability.
Data Source
AI summary
A serial data receiver subsystem included in a computer system may include a data detection circuit, a speed detection circuit, and a receiver circuit that includes multiple subcircuits. The data detection circuit performs a comparison of a reference voltage to the magnitude of signals received via a communication link that encodes a serial data stream consisting of multiple data symbols. Using a result of the comparison, the data detection circuit may activate a signal present indicator indicating the presence of data on the communication link. Once the signal present indicator is active, the speed detection circuit checks the number of transitions to determine a rate at which data is being transmitted. In response to a determination that the rate of the data being transmitted exceeds a threshold value, the receiver circuit activates one or more of the multiple subcircuits.