Configurable Debug Units for SoC Data Integrity Verification
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Solution Overview
Problem
Existing debugging mechanisms for integrated circuits are insufficient for verifying the proper operation of specific circuits within Systems-on-Chip (SoCs) and Systems-in-Package (SiPs), as they primarily focus on software analysis and lack the ability to monitor data exchange and generate traffic profiles across the entire system effectively.
Innovation Solution
A debug system with configurable debug units associated with each communication interface, allowing data insertion and reception, and capable of generating and comparing traffic profiles, which can be configured via software instructions executed by the processor, enabling direct monitoring and verification of data integrity across the interconnection network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional debugging mechanisms are used for integrated circuits, then software analysis can be performed, but the ability to monitor data exchange and verify circuit operation is insufficient
Solution Approach 1:
The debug system is segmented into multiple independent debug units, each associated with a specific communication interface. Each debug unit can independently monitor, insert, and remove data packets from the interconnection network, allowing distributed monitoring of data exchange across different circuits without requiring a centralized complex debugging mechanism.
Solution Approach 2:
Debug units act as intermediary components between the communication interfaces and the interconnection network. They insert debug data packets into the network and can remove or modify packets passing through, enabling indirect observation and control of data exchange between circuits without directly interfering with the core communication paths.
2Difficulty of detecting and measuring
If debug units are added to each communication interface to enable data insertion and reception, then data exchange monitoring capability is improved, but device complexity increases
Solution Approach 1:
Each debug unit is designed as a multi-functional component that can operate in multiple modes: monitoring data packets, inserting debug data packets, removing packets from the network, and comparing traffic profiles. This universal design allows a single debug unit structure to perform various debugging functions, reducing the need for separate specialized components for each function.
Solution Approach 2:
The debug units are integrated within the existing communication interface structure of the SoC. Each debug unit is nested within or associated with a specific communication interface, allowing the debugging functionality to be embedded within the existing system architecture rather than adding completely separate external debugging equipment.
3Measurement precision
If multiple debug units are configured to monitor data exchange across the interconnection network, then measurement precision of data integrity is improved, but the number of components increases
Solution Approach 1:
Debug units compare the traffic profiles of data packets they monitor against expected profiles to verify data integrity. This feedback mechanism allows each debug unit to autonomously detect errors or anomalies in data exchange, providing precise measurement of data integrity without requiring constant external intervention or additional comparison components.
Solution Approach 2:
The debug units create and compare copies of traffic profiles representing expected data exchange patterns. By comparing actual data packets against these copied profiles, the system can verify data integrity with high precision while using relatively simple comparison logic within each debug unit, rather than requiring complex centralized verification.
Data Source
AI summary
A system includes a processor and a plurality of circuits connected through an interconnection network, wherein associated to each circuit is a respective communication interface configured for exchanging data between the respective circuit and the interconnection network. In particular, a debug unit is associated with each communication interface. Each debug unit is configurable as a data-insertion point, wherein the debug unit transmits data by means of the respective communication interface to the interconnection network, or each debug unit is configurable as a data-reception point, wherein the debug unit receives data by means of the respective communication interface from the interconnection network.