Multi-Rate Receiver Clocking for Arbitrary Data Rate Transceivers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional transceiver circuitry is limited by predetermined data rates, making it difficult to support the entire operating range of standards like HDMI, which requires arbitrary clock rates, and solutions involving phase-locked loops with wide tuning ranges are costly.
Innovation Solution
The transceiver circuitry is reconfigured to operate at different data rates by using rate detection circuitry to determine the frequency of a reference clock signal, generating a corresponding receiver clock signal, and configuring the receiver circuitry to accommodate changes in data rates, allowing it to support various input-output protocols with arbitrary data rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transceiver circuitry uses predetermined data rates, then the circuit design is simple and cost-effective, but the adaptability to support arbitrary clock rates (such as HDMI standards) is limited
Solution Approach 1:
The transceiver circuitry is designed with dynamic reconfiguration capability, allowing it to adapt its operating parameters (data rate, clock frequency) based on the detected input signal characteristics. The circuit can switch between different operational modes to support arbitrary clock rates while maintaining a relatively simple base design.
Solution Approach 2:
The invention employs parameter change by detecting the input clock frequency and adjusting the transceiver's operating parameters accordingly. The system modifies its internal timing and sampling parameters to match the detected data rate, enabling support for multiple standards without requiring completely different circuit designs for each rate.
2Adaptability or versatility
If a phase-locked loop with wide tuning range is used to support arbitrary data rates, then the adaptability to different HDMI applications is improved, but the cost increases
Solution Approach 1:
Instead of using expensive wide-tuning-range phase-locked loops, the invention employs a more economical approach using rate detection circuitry combined with reconfigurable transceiver logic. This substitutes costly analog components with cheaper digital processing elements that achieve the same adaptability goal.
Solution Approach 2:
The invention replaces the traditional analog phase-locked loop mechanism with a digital-based rate detection and reconfiguration system. This substitution uses digital signal processing and control logic instead of analog frequency synthesis, reducing component costs while maintaining the ability to support arbitrary data rates.
3Reliability
If transceiver circuitry is designed for specific data rates, then the manufacturing precision and reliability are improved, but the ease of operation across different protocols is reduced
Solution Approach 1:
The transceiver circuitry is designed with universal functionality to support multiple protocols and data rates within a single device. The rate detection circuitry identifies the incoming signal characteristics, and the reconfiguration logic adapts the transceiver parameters accordingly, allowing one circuit to perform multiple functions across different HDMI standards and protocols.
Data Source
AI summary
Techniques to operate circuitry in an integrated circuit are provided. The circuitry may include rate detection circuitry, receiver circuitry, and configuration circuitry. The receiver circuitry may receive a data stream with an arbitrary data rate. The rate detection circuitry may receive a reference clock signal that is associated with the received data stream. The rate detection circuitry determines the frequency of the reference clock signal such that an appropriate clock signal may be generated for the receiver circuitry. The receiver clock signal may be generated by clock generation circuitry that is coupled to the rate detection circuitry. The configuration circuitry may accordingly configure the receiver circuitry based at least on the determined frequency of the reference clock signal so that the receiver circuitry may operate at the arbitrary data rate.