Multi-Die SoC Reset Circuits for Stable Cross-Voltage Power-On
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing 3D IC structures face challenges in stably controlling power for multiple dies due to differing voltage levels, leading to operational issues during interactions between stacked semiconductor dies.
Innovation Solution
A system-on-chip (SoC) design with separate reset circuits for each die, allowing independent control of power operations using different voltages, and incorporating power management circuits for information exchange between dies to stabilize power-on reset operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If different voltage levels are supplied to respective dies to meet performance requirements, then processing speed and memory capacity are improved, but stable power control for each die becomes difficult
Solution Approach 1:
The patent divides the power control function into separate reset circuits for each die. The first reset circuit controls the first die using a first voltage, while the second reset circuit controls the second die using a second voltage. This segmentation allows each die to receive appropriate voltage levels independently, improving both processing speed and stable power control.
Solution Approach 2:
The patent applies different voltage levels to different dies based on their specific requirements. The first die operates with a first voltage level while the second die operates with a second voltage level, allowing each die to have optimized power characteristics tailored to its functional requirements, thereby improving overall system productivity while maintaining reliable power control.
2Adaptability or versatility
If different voltage levels are supplied to respective dies, then power management flexibility is improved, but operational issues arise during interactions between dies
Solution Approach 1:
The patent introduces reset circuits as intermediary components between the power supply and each die. These reset circuits receive reset signals and translate them into appropriate voltage levels for each die, mediating the interaction between dies operating at different voltages. This allows power management flexibility while ensuring operational reliability during die interactions.
3Ease of operation
If separate reset circuits are used for each die, then independent power control is improved, but device complexity increases
Solution Approach 1:
The patent segments the reset control function into separate reset circuits for each die. While this increases device complexity by adding more circuits, it provides independent power control that simplifies operation and maintenance. Each reset circuit can be configured and controlled independently, making the system easier to operate despite the increased number of components.
Data Source
AI summary
A system-on-chip (SoC) including a first die and a second die adjacent to a surface of the first die, the second die connected to the first die. The first die may include a first reset circuit configured to output a first reset signal to operate the first die based on a first voltage received from a power supply, and the second die may include a second reset circuit configured to output a second reset signal to operate the second die based on a second voltage received from the power supply.