Stacked Memory Channel Activation for Bandwidth and Synchronization
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Solution Overview
Problem
Existing stack memory systems face challenges in efficiently managing connectivity and synchronization between multiple memory devices and a computing device, leading to suboptimal data transmission and error detection.
Innovation Solution
A memory system with a computing device and multiple memory devices connected via control and memory physical channels, utilizing through silicon vias (TSVs) for high-speed data transfer, and a selector to manage channel activation based on selection signals, along with error detection and synchronization mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple memory physical channels are connected to control physical channels in a stack memory system, then data transmission bandwidth is improved, but connectivity management complexity and synchronization difficulty increase
Solution Approach 1:
The system segments the connectivity management by introducing a base chip that divides and manages multiple memory physical channels independently. Each memory channel can be controlled and activated separately through the base chip, reducing the overall management complexity while maintaining high bandwidth through parallel channel operation.
Solution Approach 2:
The base chip acts as an intermediary between the computing device and multiple memory devices. It manages the connectivity and synchronization between control physical channels and memory physical channels, simplifying the interface and reducing complexity for the computing device while enabling high-speed data transmission through coordinated channel management.
2Productivity
If memory physical channels are activated based on connection status, then data transmission efficiency is improved, but channel synchronization and error detection complexity increase
Solution Approach 1:
The system implements feedback mechanisms where the base chip monitors the activation status and connection state of each memory physical channel. Based on this feedback, it dynamically adjusts channel activation and synchronization, ensuring efficient data transmission while maintaining proper coordination and error detection across all channels.
Solution Approach 2:
The base chip performs preliminary actions by pre-configuring and pre-synchronizing memory physical channels before data transmission begins. It establishes the connection status and activation state in advance, which simplifies the synchronization process and enables efficient data transmission without complex real-time coordination.
3Speed
If through silicon vias (TSVs) are used for connecting memory chips, then data transmission speed is improved, but manufacturing precision requirements and connection reliability challenges increase
Solution Approach 1:
The base chip serves as an intermediary layer that absorbs and compensates for TSV alignment variations. It provides a robust interface that masks the manufacturing precision challenges of TSV connections, enabling high-speed data transmission through carefully engineered connection management and signal routing that tolerates typical TSV fabrication variations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances data transmission efficiency and error detection across multiple memory devices, optimizing system performance and reducing errors in data transfer.
Implementation Method 1
connected by through silicon vias (TSVs)
Data Source
AI summary
A memory system includes a computing device including one or more control physical channels and a memory device including a plurality of memory physical channels. A memory physical channel, among the plurality of memory physical channels, that is connected to a first control physical channel among the one or more control physical channels is activated.