Memory Controller Terminal Arrangement for Signal Skew Reduction
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Solution Overview
Problem
Memory systems experience signal skew and interference during data input/output operations due to signal line intersections, which can lead to performance issues and increased costs from adding separate package layers to prevent these problems.
Innovation Solution
The memory system incorporates a physical interface circuit with data input/output terminals arranged in a specific pattern to prevent signal line intersections, allowing data to be transmitted through multiple channels without crossing, thereby reducing signal skew and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data input/output terminals for different channels are arranged adjacent to each other, then signal transmission efficiency is improved, but signal skew and interference occur due to signal line intersections
Solution Approach 1:
The patent applies dimensionality change by transitioning from a two-dimensional planar arrangement of terminals to a three-dimensional stacked arrangement. Terminals for different channels are positioned at different heights (vertical dimension) rather than adjacent in the same plane, which prevents signal line intersections while maintaining transmission efficiency. The vertical stacking allows signal lines to run in different spatial layers without crossing, thus resolving the contradiction between transmission efficiency and signal integrity.
2Reliability
If signal lines are arranged to prevent intersections, then signal skew and interference are prevented, but device complexity increases due to additional routing requirements
Solution Approach 1:
By utilizing the vertical dimension for terminal arrangement, the patent simplifies routing complexity. Signal lines can be directly connected to terminals at their respective vertical positions without requiring complex lateral routing to avoid intersections. This vertical stacking approach naturally prevents signal line crossings while maintaining simple, direct signal paths, thus resolving the contradiction between signal integrity and routing complexity.
3Reliability
If separate package layers are added to prevent signal line intersections, then signal skew and interference are prevented, but manufacturing cost increases
Solution Approach 1:
The patent achieves signal line separation by utilizing the vertical dimension within the existing package structure, rather than adding separate package layers. Terminals for different channels are positioned at different heights, allowing signal lines to be routed in different vertical layers without requiring additional external package layers. This approach prevents signal intersections while avoiding the increased manufacturing costs associated with adding separate package layers.
Data Source
AI summary
Embodiments of the present disclosure relate to a memory system and a memory controller, in which data input/output terminals in different data input/output terminal groups corresponding to different channels may be arranged adjacent to each other, thereby preventing skew of a signal occurring during data input/output operations and interference between different signals and reducing the cost required for implementing the memory system.