Memory Controller Address Segmentation for Multi-Memory Decoding
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Solution Overview
Problem
Existing storage devices require redesign of the controller when the type or design of the memory is changed, leading to inefficiencies and limitations in optimizing or extending memory performance.
Innovation Solution
A controller that uses a first decoder for selecting an operation word line and a second decoder for selecting an operation bit line, with address bits divided into portions to facilitate addressing various memory types or designs without altering the controller design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the memory type or design is changed to enhance performance, then memory performance is improved, but the controller requires redesign
Solution Approach 1:
The controller is designed with universal decoding capabilities that can handle multiple memory types and designs through a single unified architecture. The first decoder handles word line selection while the second decoder handles bit line selection, creating a flexible system that can adapt to different memory configurations without requiring controller redesign.
Solution Approach 2:
The address bits are divided into portions that are selectively used by different decoders. The first address bit portion controls the first decoder for word line selection, while the second address bit portion controls the second decoder for bit line selection. This segmentation allows the controller to accommodate different memory designs by reconfiguring how address bits are distributed to decoders.
2Manufacturing precision
If the controller is redesigned for each memory type, then memory control precision is improved, but manufacturing complexity and cost increase
Solution Approach 1:
A single controller design with universal decoding logic can precisely control multiple memory types through configurable decoder operations. The first decoder and second decoder work together to provide precise addressing without requiring separate controller designs for each memory type, simplifying manufacturing while maintaining control precision.
Solution Approach 2:
The controller achieves precise control of different memory types by changing operational parameters such as address bit allocation, decoder configuration, and timing sequences rather than redesigning the hardware. This allows the same controller to be manufactured once and then configured for different memory specifications through parameter adjustments.
Data Source
AI summary
A portion of an address bit for column addressing or an address bit for row addressing for a memory is used for addressing. Addressing may be performed using another address bit, thereby making it possible to easily address various types of memories or extended memories without changing or extending the address bit.