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MIPI A-PHY: A Resilient Asymmetric Data Transport for a Vehicle’s Lifespan (.PDF Download)

June 24, 2021

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In September 2020, the MIPI Alliance announced the release of its new A-PHY specification, the first industry-standard, long-reach, serializer-deserializer (SerDes) physical-layer (PHY) interface. MIPI A-PHY v1.0 serves as the foundation of an end-to-end system designed to simplify the integration of cameras, sensors, and displays across a vehicle.

The specification provides a robust, multi-gigabit asymmetric data link, providing high-speed unidirectional data, embedded bidirectional control data, and optional power delivery over a single cable. MIPI A-PHY offers a near-zero packet-error rate (PER) of 10-19 for unprecedented performance over the vehicle lifetime, ultra-high immunity to electromagnetic-interference (EMI) effects in demanding automotive conditions, cable reach up to 15 meters, and data rates as high as 16 Gb/s with a roadmap to 48 Gb/s and beyond.