Daisy-Chained Memory Subsystems for Scalable Bandwidth and Capacity
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Solution Overview
Problem
Current memory systems face limitations in communication capacities and storage density, with storage devices failing to scale with the increasing demand for data storage, leading to inefficiencies in bandwidth utilization and higher costs due to the need for intermediate switches and additional power requirements.
Innovation Solution
A cascaded configuration of memory subsystems connected in series, with an interfacing subsystem managing communication and data management as a unified system, eliminating the need for intermediate switches and optimizing bandwidth distribution across multiple drives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If memory systems use traditional parallel connection with intermediate switches, then communication capacity is maintained, but device complexity and power consumption increase
Solution Approach 1:
The patent removes intermediate switches from the memory system architecture by implementing a daisy-chained connection where each memory device directly connects to the host controller through a serial interface. This extraction of unnecessary components reduces device complexity and eliminates the power consumption associated with intermediate switching devices.
Solution Approach 2:
The patent introduces a serial communication interface as an intermediary mechanism that enables direct point-to-point communication between the host controller and each memory device in the chain. This intermediary interface replaces the need for complex parallel switching infrastructure while maintaining communication capacity.
2Quantity of substance
If storage density is increased to meet growing data demands, then storage capacity improves, but communication bandwidth utilization becomes inefficient
Solution Approach 1:
The patent implements a dynamic communication protocol that adapts bandwidth allocation based on the position of memory devices in the daisy chain and their specific data transfer requirements. This dynamic approach ensures efficient bandwidth utilization across the serial interface while supporting high storage capacity systems.
Solution Approach 2:
The patent changes the communication interface parameters from traditional parallel connections to a high-speed serial connection with adjustable baud rates and data widths. This parameter change enables the system to maintain efficient bandwidth utilization even as storage capacity scales by adding more devices to the chain.
3Quantity of substance
If more memory devices are connected to increase storage capacity, then storage density improves, but the need for intermediate switches increases complexity and cost
Solution Approach 1:
The patent segments the memory system into independently addressable devices connected in a daisy-chain topology, where each device can be individually managed and accessed. This segmentation allows storage capacity to scale by simply adding more devices to the chain without requiring additional intermediate switches or complex interconnect structures.
Solution Approach 2:
The patent creates a universal daisy-chain interface that can accommodate any number of memory devices with the same connection protocol. This multi-functional interface design allows the system to scale storage capacity uniformly without introducing different types of interconnect components or increasing structural complexity.
Data Source
AI summary
Methods, apparatuses, and systems related to serially chained memory subsystems are described. The grouped set of chained subsystems may coordinate internal communications and operations across the separate subsystems within the set. Memory locations for related or connected data may be dynamically computed to be across multiple subsystems to allow for parallel processing, failure/error recovery, or the like.