Clock Translator for High-Resolution Parallel-to-Serial Timing
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Solution Overview
Problem
Existing parallel to serial conversion systems face challenges in achieving high resolution and accurate synchronization of clock signals at high speeds due to poor frequency resolution of source clocks.
Innovation Solution
A system and method that utilize a clock translator to generate a bit rate clock signal with improved resolution by combining a first reference clock signal and a second reference clock signal, where the second clock signal has a faster rate, allowing for better frequency control and synchronization, thereby enhancing the conversion process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single reference clock signal is used for parallel to serial conversion, then the system structure is simple, but the frequency resolution is poor at high speeds
Solution Approach 1:
The patent combines multiple reference clock signals (first reference clock signal and second reference clock signal) to generate the bit rate clock signal. This merging of clock sources allows the system to achieve high frequency resolution by utilizing the faster second reference clock while maintaining the frequency relationship defined by the first reference clock, thereby resolving the contradiction between simple structure and high resolution.
Solution Approach 2:
The clock translator serves as an intermediary device that takes multiple reference clock signals as inputs and produces a synthesized bit rate clock signal with improved resolution. This intermediary component enables the system to benefit from multiple clock sources without requiring complex direct integration, thus achieving high frequency resolution while managing system complexity.
2Measurement precision
If a faster reference clock is used, then the frequency resolution is improved, but the synchronization accuracy with the source clock deteriorates
Solution Approach 1:
The clock translator uses feedback mechanisms to maintain synchronization between the bit rate clock signal and the source data signal. By monitoring the relationship between the first reference clock and the synthesized bit rate clock, the system can adjust timing to ensure accurate synchronization while benefiting from the high resolution provided by the faster second reference clock.
Solution Approach 2:
The system dynamically adjusts the bit rate clock signal generation based on the relationship between multiple reference clocks. The clock translator can adaptively manage the timing and phase relationships, allowing the system to maintain synchronization accuracy while utilizing the high frequency resolution of the faster second reference clock signal.
Data Source
AI summary
A system and method for using one or more clock signals is disclosed. The system includes a clock translator that has a first input to receive a first reference clock signal and a second input to receive a second reference clock signal. The clock translator also includes an output to provide a bit rate clock signal having a clock frequency in a first ratio with respect to the frequency of the first reference clock but having a resolution based on at least a portion of the second reference clock signal. The second reference clock has a faster rate than the first reference clock.