Member companies recently wrapped up the fifth MIPI A-PHY® Compliance Program test event—the first held in Asia—marking another milestone in the program's development. This latest event expanded testing to cover advanced transmitter and receiver test scenarios, introduced protocol-level compliance testing for the first time and onboarded several new participating companies.
Organized by BitifEye Digital Test Solutions GmbH and hosted by iPasslabs in Taipei, Taiwan, the event was held 8-12 December, offering companies with devices under test (DUTs) the opportunity to collaborate with test equipment vendors in a confidential environment and receive valuable feedback about their devices.
Participating companies benefited from captured real-world test data and the ability to evaluate against defined pass/fail criteria. This exercise supported iterative refinement of the A-PHY Reference Compliance Test Suite (CTS) and the test environments themselves, further solidifying the overall program. Notably, the event reaffirmed A-PHY's exceptional bit error rate (BER) resilience under harsh electromagnetic interference (EMI), far surpassing noise tolerances seen in competing automotive SerDes technologies.
The December 2025 event included participants from BitifEye Digital Test Solutions GmbH, Keysight Technologies Inc., Novatek Microelectronics Corp., Sony Semiconductor Solutions Corporation, Teledyne LeCroy and Valens Semiconductor.
The Taipei event builds on the successes of the four previous test events, and collectively, they represent a major step forward in validating multi-vendor interoperability and strengthening the technical foundation of the A-PHY Compliance Program. These testing opportunities also confirm the maturity of the A-PHY test infrastructure and contribute to the broader adoption of MIPI A-PHY and the growth of the A-PHY ecosystem.
Developed by the A-PHY Working Group, the compliance program was initiated in response to strong demand from automotive OEMs and Tier 1 suppliers seeking assurance that implementations of MIPI A-PHY and A-PHY-related specifications in the MIPI Automotive SerDes Solutions (MASS™) framework meet stringent industry expectations. The program is being rolled out in phases, with the initial phase focusing on physical and link layer compliance, based on the current reference compliance test suite. Future phases will extend coverage to the protocol adaptation layers (PALs), ensuring robust interoperability for higher-layer protocols operating over A-PHY links.
When fully implemented, the program will allow automotive OEMs and system designers to validate that MIPI A-PHY devices have been tested and deemed compliant with the specifications and will support the automotive industry’s requirements for multi-vendor interoperability, functional safety, EMI robustness, and reduced development time and cost for A-PHY-based systems.
For more information about the MIPI A-PHY Compliance Program, contact George Goodman, technical program manager for the A-PHY Working Group.