PCB Channel Topology for Memory Capacity Flexibility
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Solution Overview
Problem
Current memory systems face challenges in efficiently supporting both low and high capacity configurations using a single form factor, as existing solutions often require multiple form factors for different memory capacities, leading to increased production complexity and inefficiency.
Innovation Solution
A printed circuit board (PCB) design that incorporates a combination of point-to-point and daisy chain topologies for channels, allowing for flexible configuration of memory chip mounting areas to accommodate various memory capacities within a single form factor, enabling efficient production and usage across different applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single form factor is used for both low and high capacity memory systems, then production complexity is reduced, but channel configuration flexibility is insufficient
Solution Approach 1:
The channel group is divided into two subsets: a first subset configured in point-to-point topology and a second subset configured in daisy-chain topology. This segmentation allows each subset to be independently configured based on capacity requirements, enabling a single form factor to support both low and high capacity memory systems while maintaining production efficiency.
Solution Approach 2:
The channel configurations are made dynamic and adjustable rather than fixed. The memory controller can selectively activate point-to-point or daisy-chain topology for different channel subsets based on the specific capacity requirements, allowing the system to adapt between low and high capacity configurations using the same physical form factor.
2Adaptability or versatility
If multiple form factors are used for different memory capacities, then channel configuration flexibility is improved, but production complexity increases
Solution Approach 1:
A single universal form factor is designed to perform multiple functions by supporting both point-to-point and daisy-chain channel topologies. The memory controller can configure the channel groups in different topologies based on capacity requirements, eliminating the need for multiple specialized form factors and reducing production complexity while maintaining configuration flexibility.
3Productivity
If point-to-point topology is used for all channels, then data operation efficiency is improved, but manufacturing flexibility for different capacities is reduced
Solution Approach 1:
Different channel subsets are assigned different topology qualities based on their specific functions. The first subset uses point-to-point topology optimized for high-speed data operations, while the second subset uses daisy-chain topology suitable for extended capacity configurations. This local differentiation allows each channel group to operate at optimal efficiency for its intended purpose while maintaining overall system flexibility.
4Adaptability or versatility
If daisy-chain topology is used for all channels, then manufacturing flexibility for different capacities is improved, but data operation efficiency is reduced
Solution Approach 1:
The system applies different topology qualities to different channel subsets based on their specific requirements. The point-to-point configured channels handle high-speed data operations where efficiency is critical, while the daisy-chain configured channels provide the necessary manufacturing flexibility for various capacity configurations. This localized optimization ensures that each channel group operates at its optimal performance level.
Data Source
AI summary
A memory system includes a printed circuit board, at least one memory chip mounted on the printed circuit board, and a memory controller arranged on the printed circuit board and connected to 2N (where N is an integer of 2 or more) channels, the memory controller configured to perform a write operation and a read operation on the at least one memory chip. In the printed circuit board, a first subset of the channels corresponds to a first channel group configured in a point to point topology, and a remaining subset of the channels corresponds to a second channel group configured in a daisy chain topology.