MIPI A-PHY® is a long-reach serializer-deserializer (SerDes) physical layer interface for automotive applications, including ADAS, ADS and other surround-sensor applications, including cameras and in-vehicle infotainment (IVI) displays.
The specification provides an asymmetric data link in a point-to-point or daisy-chain topology, with high-speed unidirectional data, embedded bidirectional control data and optional power delivery, all over a single cable. This reduces wiring, cost and weight, and allows designers to optimize systems for the performance, cost and complexity required by their use cases, providing scalability and flexibility to meet a broad range of speed and design needs. For integration with existing network backbones, A-PHY complements Ethernet, CAN, FlexRay and other interfaces.
It is anticipated that the first vehicles using A-PHY components will be in production in 2024.
In addition to automotive uses, the specification will be well-suited for applications such as IoT and industrial.
MIPI A-PHY was developed by the MIPI A-PHY Working Group and is available to MIPI Alliance members. A-PHY v1.0 was also adopted as an IEEE standard in June 2021 and is available as IEEE 2977-2021. A-PHY v1.1 will also be submitted for adoption as an IEEE standard.
For information about becoming a member, see Join MIPI.