Programmable Memory Interfaces for Clean CA/Data Routing
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Solution Overview
Problem
Existing wire routing and bonding technologies face challenges in satisfying design constraints for circuit boards and integrated circuit (IC) packages, particularly in efficiently managing multiple CA and data interfaces to support various operational modes and threading configurations, which complicates clean circuit board routing and wire bonding.
Innovation Solution
The implementation of programmable command-and-address (CA) and data interfaces in memory devices, allowing for selection of operational modes, active CA interfaces, and data interfaces based on register bits and pin signals, enables adjustable threading and efficient resource utilization in clamshell configurations, facilitating clean circuit board routing and wire bonding in IC packages with multiple dies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple CA and data interfaces are implemented to support various operational modes and threading configurations, then adaptability and versatility are improved, but device complexity increases
Solution Approach 1:
The patent implements programmable CA and data interfaces that can be dynamically configured through register bits and pin signals. The interfaces can be programmatically enabled or disabled based on operational mode, allowing the system to adapt its complexity level to match the required functionality rather than maintaining fixed high complexity across all operating conditions.
Solution Approach 2:
The memory device incorporates multiple CA interfaces and data interfaces that can serve different operational modes and threading configurations. These interfaces are designed to be universally applicable across various operational scenarios, with the ability to be selectively activated to match the specific operational requirements, thereby providing versatility without requiring permanently complex interface management.
2Adaptability or versatility
If programmable interfaces with multiple operational modes are implemented, then adaptability is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent divides the interface system into separable CA interfaces and data interfaces, each with independent programmable control through register bits and pin signals. This segmentation allows different interface combinations to be activated based on the operational mode, enabling cleaner circuit board routing and wire bonding by deactivating unnecessary interfaces rather than routing all possible connections.
3Productivity
If multiple CA interfaces are active simultaneously, then productivity is improved through parallel processing, but device complexity increases
Solution Approach 1:
The patent enables dynamic activation and deactivation of CA interfaces and data interfaces through programmable control mechanisms. Multiple interfaces can be simultaneously active when parallel processing is required, while individual interfaces can be deactivated when not needed, allowing the system to optimize productivity while managing complexity through selective activation rather than permanent multi-interface complexity.
Data Source
AI summary
A memory device comprising a programmable command-and-address (CA) interface and/or a programmable data interface is described. In an operational mode, two or more CA interfaces may be active. In another operational mode, at least one, but not all, CA interfaces may be active. In an operational mode, all of the data interfaces may be active. In another operational mode, at least one, but not all, data interfaces may be active. The memory device can include circuitry to select: an operational mode; a sub-mode within an operational mode; one or more CA interfaces as the active CA interface(s); a main CA interface from multiple active CA interfaces; and/or one or more data interfaces as the active data interfaces. The circuitry may perform these selection(s) based on one or more bits in one or more registers and/or one or more signals received on one or more pins.