Tessent MissionMode provides automation and on-chip IP to enable semiconductor chips in an automotive electronics system to be tested and diagnosed at any point during a vehicle’s functional operation. This helps to achieve ISO 26262 safety and long-term reliability requirements.
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Tessent MissionMode is the only commercial solution that provides the infrastructure for system software-based access to any test and diagnosis capabilities integrated within an automotive chip.
Tessent MissionMode provides system-level low latency access to all on-chip test resources for on-line test and diagnosis. The hierarchical network of scan insertion bit switches allows for communication to the distributed test resources. An IEEE 1149.1 test access port provides external access to the IJTAG network.
The Tessent MissionMode controller can be configured to operate in two different modes. In CPU access mode, the controller supports parallel read and write operations to and from a CPU bus. In the direct memory access (DMA) mode, the Tessent MissionMode controller reads command data preloaded in a non-volatile memory such as a ROM.
Tessent MissionMode is delivered with an ISO 26262 software tool qualification report that provides the required evidence of the tool’s suitability for ISO 26262 related tasks. The report can be used to simplify the ASIL device certification process significantly. All Tessent software tool qualification reports are certified by SGS-TüV Saar.
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