Automotive Applications Drive MIPI A-PHY Development

By _MIPI Alliance Blog

June 3, 2019

Q: In August 2018, MIPI Alliance announced development work had begun on MIPI A-PHY^SM. What is A-PHY?

MIPI A-PHY is a physical layer specification targeted for advanced driver-assistance systems (ADAS) and autonomous driving systems (ADS) and other surround sensor applications in automotive (e.g., for displays, cameras), but also for other longer-reach applications such as IoT and industrial. While most MIPI specifications are designed for shorter reaches for use within mobile devices, A-PHY will be capable of reaching up to 15 meters in the demanding automotive environment.

Q: Why did MIPI set out to develop this specification?

There were several compelling reasons. First, MIPI has a long history of enabling cameras and displays in mobile and other areas, and MIPI CSI-2^SM and MIPI DSI^SM/DSI-2^SM specifications (used with MIPI C-PHY^SM and D-PHY^SM) are already implemented in automobiles. But today, integrating the many cameras and displays found in cars to other devices and systems is challenging, and this will become even more difficult as more cameras, displays and sensors are added to support autonomous driving and other applications.

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