Clock Recovery Delay Adjustment for Multi-Line Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic circuits face inefficiencies in data communication due to the limitations of single-line signal transmission, which can lead to errors from noise, and the increased complexity of multi-line communication systems degrades efficiency further, necessitating a more effective method for clock recovery and data transmission.
Innovation Solution
An electronic circuit configured to receive signals through three or more communication lines, utilizing a clock-data recovery circuit and a control value generation circuit to recover a clock and adjust delays based on communication conditions, ensuring optimal clock edges and setup/hold periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If three or more communication lines are used for data transmission, then communication efficiency is improved, but device complexity increases
Solution Approach 1:
The reception circuit is divided into multiple functional blocks: buffer unit for signal reception, clock-data recovery circuit for clock extraction, and control value generation circuit for delay adjustment. This segmentation allows each block to handle specific tasks independently, improving overall communication efficiency while managing complexity through modular design.
Solution Approach 2:
The clock-data recovery circuit serves multiple functions: it recovers the clock signal from the received data signal, generates control values for delay adjustment, and provides timing synchronization for the entire reception circuit. This multi-functionality reduces the need for separate dedicated circuits, thereby managing device complexity while maintaining high communication efficiency.
2Productivity
If clock signal is extracted from signal transition, then communication efficiency is improved, but reliability degrades under varying communication conditions
Solution Approach 1:
The delay amount in the clock-data recovery circuit is dynamically adjusted based on communication conditions. The control value generation circuit continuously monitors the recovered clock signal and adjusts the delay amount to optimize clock edge timing, ensuring reliable data sampling even when communication conditions vary. This dynamic adjustment maintains reliability while preserving the efficiency benefits of clock extraction from signal transitions.
Solution Approach 2:
The control value generation circuit uses feedback from the recovered clock signal and reception signals to adjust the delay amount. By monitoring the timing relationship between clock edges and data transitions, the circuit automatically compensates for variations in communication conditions, thereby maintaining reliable operation while keeping the clock extraction method efficient.
3Device complexity
If delay amount is fixed, then device complexity is reduced, but setup/hold period optimization is insufficient under varying conditions
Solution Approach 1:
The delay amount parameter in the clock-data recovery circuit is changed based on communication conditions. The control value generation circuit adjusts this parameter to optimize the setup and hold periods for data sampling. By dynamically changing this critical parameter, the circuit ensures reliable operation under varying conditions without requiring overly complex fixed-structure designs.
Data Source
AI summary
An electronic circuit receives transmission signals from three or more communication lines. The electronic circuit includes a clock-data recovery circuit and a control value generation circuit. The clock-data recovery circuit outputs a recovered clock based on a transition generated in reception signals. The clock-data recovery circuit outputs recovered signals based on the recovered clock and the reception signals. The recovered clock has a first edge in response to the transition generated in the reception signals. The recovered clock has a second edge in response to a reset signal generated based on a delay of the recovered clock. The delay of the recovered clock is adjusted based on a control value provided from the control value generation circuit. The control value is adjusted based on change of a communication condition.