DDR to SATA Signal Conversion Circuit for Memory Subsystems
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Solution Overview
Problem
Current memory systems face inefficiencies in utilizing multiple memory technologies, particularly in converting signals between DDR and SATA protocols, which affects data fetching and processing across different memory classes, leading to performance bottlenecks and resource consumption.
Innovation Solution
The implementation of a memory subsystem that includes NAND flash memory and dynamic random access memory, with dedicated circuits for converting DDR signals to SATA signals and vice versa, utilizing a memory bus architecture that allows communication between different memory classes, enabling efficient data fetching and processing across multiple memory technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple memory technologies (NAND flash and DRAM) are integrated in a memory subsystem, then storage capacity and performance are improved, but signal conversion complexity between different protocols (DDR and SATA) increases
Solution Approach 1:
The patent introduces protocol conversion circuits as intermediary components that translate between DDR and SATA protocols. These circuits act as mediators between the DRAM memory subsystem and NAND flash storage, enabling seamless data transfer between different memory technologies without requiring direct compatibility between them.
Solution Approach 2:
The memory subsystem is segmented into distinct functional components: a DRAM-based memory subsystem operating at DDR protocol, a NAND flash storage subsystem operating at SATA protocol, and dedicated conversion circuits for each interface. This segmentation allows each component to be optimized independently while maintaining overall system functionality.
2Adaptability or versatility
If dedicated conversion circuits are added for protocol translation, then interoperability between memory classes is improved, but resource consumption and system complexity increase
Solution Approach 1:
The protocol conversion circuits are pre-configured and positioned between the memory subsystems before data transfer occurs. The conversion circuits are activated in advance to prepare for protocol translation, ensuring that data can be efficiently transferred between DDR and SATA interfaces without requiring complex real-time translation decisions during data access.
3Productivity
If data is fetched using time between thread execution, then memory access efficiency is improved, but synchronization complexity and potential race conditions increase
Solution Approach 1:
The patent implements continuous data fetching operations that utilize the time intervals between thread executions to transfer data between memory subsystems. This approach ensures that memory access operations are performed continuously without idle waiting periods, improving overall memory access efficiency while the timing mechanism itself manages the synchronization requirements.
Data Source
AI summary
An apparatus and associated method/processing unit are provided for utilizing a memory subsystem including NAND flash memory and dynamic random access memory. Further included is a first circuit for receiving DDR signals and converting the DDR signals to SATA signals. The first circuit includes embedded dynamic random access memory. Also provided is a second circuit for receiving the SATA signals and converting the SATA signals to NAND flash signals. The second circuit is communicatively coupled to the first circuit via a first memory bus associated with a SATA protocol, the NAND flash memory via a second memory bus associated with a NAND flash protocol, and the dynamic random access memory. In operation, data is fetched using a time between an execution of a plurality of threads.