Navigating GMSL: How Pixel and Tunnel Modes Enhance System Performance

Technical Article Overview

Gigabit Multimedia Serial Link (GMSL) has become a foundational technology for high-bandwidth automotive camera and sensor connectivity. But not all GMSL operating modes behave the same way, and the difference between pixel mode and tunnel mode can have significant implications for system architecture and inter-standard compatibility.

This technical Q&A from Analog Devices examines one of the most important design considerations in GMSL systems: the lack of D-PHY™ to C-PHY™ translation support in tunnel mode. Engineers designing camera modules, serializer/deserializer links, or multisensor systems will find practical guidance on where this limitation arises, how it affects downstream signal processing, and what design workarounds are available.

Whether you are architecting a new ADAS platform or troubleshooting interoperability in an existing design, this article provides the technical clarity needed to make informed SerDes topology decisions. Learn how GMSL operating mode selection can affect automotive imaging system performance and design flexibility.