Multi-Drop Storage Structure with Impedance Termination for Signal Integrity
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Solution Overview
Problem
In solid-state drives (SSDs) with a multi-drop structure, the interface speed is crucial for high capacity and performance, but unmounted memory devices can generate noise that deteriorates Signal Integrity (SI) and Power Integrity (PI) characteristics.
Innovation Solution
The implementation of a storage device with a storage controller, non-volatile memory, and termination modules, including impedance elements connected to power or ground voltages, to manage data signals and reduce noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple memory devices are mounted and connected to the controller in a multi-drop structure, then the storage capacity and performance are improved, but noise is generated that deteriorates Signal Integrity and Power Integrity characteristics
Solution Approach 1:
The patent introduces termination modules as intermediary components between the controller and memory devices, and between memory devices themselves. These termination modules contain impedance elements that act as mediators to absorb signal reflections and noise, preventing them from propagating through the multi-drop bus and degrading signal integrity while allowing the high-capacity multi-drop configuration to function properly
2Quantity of substance
If multiple memory devices are mounted and connected to the controller in a multi-drop structure, then the storage capacity and performance are improved, but noise is generated that deteriorates Power Integrity characteristics
Solution Approach 1:
The termination modules serve as intermediary components that also address power integrity issues. By providing controlled impedance paths to ground or power rails, these modules stabilize voltage levels on the bus, preventing noise-induced voltage fluctuations that would otherwise degrade power integrity in the multi-drop configuration
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
Improves signal and power integrity by absorbing signal reflections, enhancing eye time and voltage margin characteristics in the non-volatile memory devices.
Implementation Method 1
a first termination module including a first impedance element that electrically connects the first wiring to at least one of a power voltage or a ground voltage
Data Source
AI summary
A storage device having a multi drop structure is provided. The storage device comprises a storage controller configured to output a data signal, a first non-volatile memory configured to receive the data signal, a first wiring electrically connected to the storage controller and configured to transfer the data signal, a first termination module including a first impedance element that electrically connects the first wiring to at least one of a power voltage or a ground voltage, a second wiring electrically connected to the first wiring and configured to transfer the data signal to the first non-volatile memory, and a third wiring electrically connected to the first wiring and configured to transfer the data signal to the first termination module.