Interconnect Error Handling in Multi-Chip Packages
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-bandwidth semiconductor chip systems with integrated network IO components face challenges in timely error detection and handling due to differing error detection and handling mechanisms across various components, leading to potential system failures and costly resets.
Innovation Solution
A control unit, implemented as an endpoint, is introduced to manage error detection and handling across different interconnects, categorizing errors, assigning unique codes, and triggering appropriate actions to prevent system shutdowns, utilizing a combination of silicon photonics and high-speed interconnect buses for efficient error management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different error handling methods are used by main components and auxiliary components, then each component can operate with its optimized error handling mechanism, but system-level error detection and handling become challenging and inconsistent
Solution Approach 1:
An intermediary error handling layer is introduced between components with different error handling mechanisms. This layer translates and harmonizes error signals from various components using different methods into a unified system-level error detection framework, allowing component independence while ensuring system consistency.
Solution Approach 2:
A universal error handling interface is implemented that can accommodate multiple component-specific error handling methods. This interface provides a common framework that works with diverse error detection mechanisms across main and auxiliary components, enabling both versatility in component design and consistency in system-level error management.
2Productivity
If high-bandwidth network IOs are implemented, then data transmission capacity increases, but error detection and handling timing becomes more challenging
Solution Approach 1:
Error detection mechanisms are activated and configured in advance before high-bandwidth data transmission begins. Checksum calculations, error detection codes, and validation protocols are pre-established so that when data arrives at high speeds, error detection can occur immediately without adding latency to the high-bandwidth operation.
Solution Approach 2:
The error handling system is designed to rapidly process and skip through error detection and correction operations at speeds matching the high-bandwidth data flow. This allows error detection to keep pace with high-speed transmission without becoming a bottleneck, maintaining both high productivity and timely error detection.
Data Source
AI summary
A system level error detection and handling of the network IO in a multi-chip-package (MCP) die is provided. The error detection and handling mechanism conceived may be used between a system-on-chip (SoC) die and a different type of die, such as a die manufactured by a third-party (e.g., a high-bandwidth network IO die). To provide a timely indication in case of any part of the network is at fault, a control unit on the SoC die handles error detection on the network IO links using various indicators. After errors are detected, the control unit groups the errors into two categories: a link failure and a virtual channel failure. Such an error handling mechanism may consolidate the actions and provide consistency in hardware behavior.