Presentation
Achieving High-Integrity Safety for 360-Degree Automotive Display Soc's RETIME-IP: A Static Analysis Approach to ASIL-D Compliance
DescriptionThe RETIME-IP is a critical component in OMNIVISION's image sensor SoC, used in automotive, 360-degree surround-view systems. This IP is responsible for receiving raw data from upstream image sources, processing it, and storing it into SRAM for consumption by downstream modules. Given that this SoC is classified as ISO-26262 ASIL-D, the RETIME-IP must also adhere to ASIL-D requirements, in accordance with the ASIL decomposition guidelines set forth in ISO 26262-10:2018, Clause 11. While the RETIME-IP was initially designed with several safety-mechanisms (SMs) to meet the necessary fault coverage, subsequent fault injection analysis identified the need for additional SMs to reach the ASIL-D targets.
This paper outlines a novel methodology using a Certified tool as per ISO26262-8:11. Using Static Analysis fault classification to find the safety gaps and thereby add SMs only in the areas required without the increase in the hardware. An intuitive way of fault classification to ISO26262 classification is employed. Also to reduce the faults that need to be simulated, Constant-Analysis, is employed to mark blocked faults as safe. The result was not only achieving the ASIL-D SPFM target of 99% but also achieving it in much less iterations, thereby saving project time compared to similar SoC projects.
This paper outlines a novel methodology using a Certified tool as per ISO26262-8:11. Using Static Analysis fault classification to find the safety gaps and thereby add SMs only in the areas required without the increase in the hardware. An intuitive way of fault classification to ISO26262 classification is employed. Also to reduce the faults that need to be simulated, Constant-Analysis, is employed to mark blocked faults as safe. The result was not only achieving the ASIL-D SPFM target of 99% but also achieving it in much less iterations, thereby saving project time compared to similar SoC projects.
Event Type
Engineering Poster
TimeWednesday, July 293:00pm - 4:00pm PDT
LocationDAC Pavilion, Exhibit Floor
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