Domain-Selective Control Component for Latency Optimization
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Solution Overview
Problem
Existing data storage and retrieval systems face challenges in minimizing latency due to the disparity in clock frequencies between host and memory components, leading to increased end-to-end data propagation latency.
Innovation Solution
A domain-selective control component is implemented between the host and memory components, which selectively engages pipelined data processing operations within the timing domain with the lowest latency, using domain-crossing circuitry and frequency-comparator-generated domain-select signals to optimize pipeline traversal time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pipelined data processing operations are implemented in both timing domains, then data processing capability is improved, but pipeline traversal time increases due to frequency disparity between host and memory components
Solution Approach 1:
The control component dynamically selects which timing domain to implement pipelined data processing operations in, based on real-time frequency comparisons between host and memory components. The domain-select signal switches the pipeline engagement between faster and slower domains, making the system adaptive to changing frequency relationships and optimizing traversal time under different operating conditions
Solution Approach 2:
The system changes the operational parameter of pipeline engagement by selectively enabling or disabling pipelined operations in different timing domains based on frequency relationships. When the host domain frequency is higher, the host-side pipeline is engaged; when memory domain frequency is higher, the memory-side pipeline is engaged, thereby optimizing performance based on frequency parameter changes
2Adaptability or versatility
If domain-crossing circuitry is used to bridge timing domains, then adaptability to different frequency configurations is improved, but device complexity increases
Solution Approach 1:
The control component acts as an intermediary between the host and memory components, using domain-crossing circuitry to bridge the timing domain gap. The frequency-comparator-generated domain-select signals coordinate the domain-crossing FIFO operations, allowing the system to adapt to different frequency configurations while managing complexity through centralized control
Solution Approach 2:
The system replaces complex synchronous timing adjustment mechanisms with asynchronous domain-crossing FIFOs coordinated by frequency-comparator signals. This substitution allows the system to handle frequency disparities without requiring complex synchronous coordination, reducing overall system complexity while maintaining adaptability
Data Source
AI summary
A control component implements pipelined data processing operations in either of two timing domains bridged by a domain-crossing circuit according to one or more configuration signals that indicate relative clock frequencies of the two domain and/or otherwise indicate which of the two timing domains will complete the data processing operations with lowest latency.