SERDES Error Detection for Low-Latency Data Links
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Solution Overview
Problem
Current data communications architectures, such as IDE/ATA, SCSI, and PCI, face performance limitations and inefficiencies in handling high-speed data communications, leading to latency issues due to overhead processing and inadequate handling of voluminous data at high clock frequencies.
Innovation Solution
A data communications architecture employing serializers and deserializers (SERDES) with a data interface that encodes and decodes data using protocols like 8b10b encoding, along with error detection and management mechanisms, including data buffers, training modules, debugging modules, and error injection/detection, to reduce latency and enhance reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional data communication architectures (IDE/ATA, SCSI, PCI) are used, then device compatibility and ease of implementation are maintained, but data communication bandwidth is limited and latency increases due to overhead processing requirements
Solution Approach 1:
The patent replaces traditional mechanical/electrical parallel communication interfaces (IDE/ATA, SCSI, PCI) with an optical communication system using light sources, photodetectors, and optical waveguides. This substitution enables higher bandwidth data transmission while reducing overhead processing requirements, directly addressing the contradiction between productivity and device complexity.
2Reliability
If overhead processing calculations are performed for data communication, then error detection and control functions are provided, but overall data communication speed decreases and bandwidth is reduced
Solution Approach 1:
The patent extracts error detection and control functions from the main data communication path by implementing dedicated overhead processing circuits that operate in parallel. This allows error detection to be performed without blocking the primary data transmission flow, thereby maintaining high communication speed while ensuring reliability through separate error handling mechanisms.
3Speed
If high clock frequency data communication is implemented, then data processing speed is improved, but latency increases and communication reliability decreases due to timing errors and signal integrity issues
Solution Approach 1:
The patent implements preliminary actions by pre-synchronizing clock signals between transmitter and receiver, and by pre-establishing optical communication channels before actual data transmission begins. This preparation work is performed in advance to eliminate timing errors and signal integrity issues that would otherwise cause latency at high clock frequencies, enabling fast and reliable communication.
Data Source
AI summary
A data communications architecture employing serializers and deserializers that reduces data communications latency. In an illustrative implementation, the data communications architecture communicates data across communications links. The architecture maintains various mechanisms to promote data communications speed and to avoid communication link down time. These mechanisms perform the functions including but not limited to generating processing debug information, processing link identification information, injecting errors across communications links and performing error detection.