Cascade Storage Reset via Software Signal Conversion
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Solution Overview
Problem
In electronic devices, there is a challenge in resetting storage devices that are not directly connected to the application processor, as they cannot receive hardware reset signals directly, leading to difficulties in performing reset operations efficiently.
Innovation Solution
Incorporating a reset converter in the first storage device that generates a software reset signal in response to a hardware reset signal from the application processor, allowing the software reset signal to be transmitted to secondary storage devices, enabling them to perform a reset operation even if they are not directly connected to the application processor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If storage devices are connected in a cascade structure to increase storage capacity, then storage capacity is improved, but the ability to receive hardware reset signals directly deteriorates
Solution Approach 1:
The first storage device acts as an intermediary by receiving the hardware reset signal from the application processor and generating a software reset signal that is transmitted to the second storage device. This mediator approach allows the reset function to propagate through the cascade connection without requiring direct hardware reset signal access for all devices.
2Speed
If a hardware reset signal is transmitted directly from the application processor, then reset speed is improved, but the适用范围 (scope of application) deteriorates because only directly connected devices can receive it
Solution Approach 1:
The reset signal is transformed from a hardware reset signal to a software reset signal. This parameter change in the signal type allows the reset function to be transmitted through the data communication interface, enabling indirect connection devices to receive reset commands while maintaining the speed advantage of hardware-initiated resets.
3Reliability
If all storage devices are directly connected to the application processor, then reset operation reliability is improved, but device complexity increases
Solution Approach 1:
The system is segmented into direct connection devices (first storage device) and indirect connection devices (second storage device). The direct connection devices maintain reliable reset reception, while indirect devices use the software reset mechanism. This segmentation allows the system to achieve comprehensive reset coverage without requiring all devices to have direct connections.
Data Source
AI summary
An electronic device includes an application processor; and a first storage device that is, connected to the application processor and directly communicates with the application processor, and connected to a second storage device such that the second storage device communicates with the application processor through the first storage device, wherein the first storage device includes a reset converter configured to generate a software reset signal in response to a hardware reset signal received from the application processor, and wherein the software reset signal resets the second storage device.