A-PHY serves as the foundation of MASSSM (MIPI Automotive SerDes Solutions), a family of specifications that when complete, will provide automotive OEMs and their suppliers with end-to-end high-performance connectivity solutions for the growing number of cameras, sensors and displays that enable automotive applications.
Yes. A-PHY v1.1, already in development and expected to be released in 2021, will double the high-speed data rate to 32 Gbps and increase the uplink data rate to 200 Mbps. Future releases, beyond v1.1, will further increase the highest data rate to 48 Gbps and beyond.
Industry implementation is expected by 2024. MIPI expects samples to be available prior to 2024.
No. As MIPI A-PHY is designed as a high-speed asymmetric solution, it can complement and be integrated with other network backbones such as Ethernet, CAN, FlexRay and other interfaces.
Yes, MIPI A-PHY is defined to support the required functional safety requirements per ISO26262:2018, including message counter, CRC-32, keep-alive mechanism and other provisions to enable creation of a system-level, end-to-end solution.
MIPI A-PHY can support direct and daisy-chained connections.
MIPI A-PHY v1.0 supports five speed gears (2, 4, 8, 12 and 16 Gbps) to provide design flexibility. This model is scalable and provides a roadmap to support data rates of 48 Gbps and beyond in later A-PHY releases.
What is the distance (range) that A-PHY can reach? Is it possible to go longer distance at a reduced performance?
MIPI A-PHY can reach up to 15m using coaxial cable with up to four inline connectors. There is no lower limitation for distance. For any other channel, system simulation should reflect the specific system implementation capabilities.
Yes. MIPI A-PHY will support approved third-party protocols. For instance, as part of this effort, protocol adaptation layers (PALs) have been released for VESA’s DisplayPort and Embedded DisplayPort standards (VESA DP and eDP), as well as for I2C and GPIO. Additional PALs are scheduled to be developed for Ethernet and I3C.
Yes. MIPI A-PHY is the only long-reach SerDes standard to support CSI-2 and DSI-2. All available MIPI CSI-2 and DSI-2 versions will be supported via protocol adaptation layers (PAL/CSI-2 and PAL/DSI-2). These protocol adaptation layers are expected to be released in early 2021.