Enabling the next generation USB 3.1 (Gen 2) in mobile devices

Optimization methodology of USB 3.1 Gen 1 serial link interface on mobile devices is proposed. The goal is upgrading to USB 3.1 Gen 2 which is running at 10 GB/s. Rigorous 3D electromagnetic full-wave modeling based on a divide and conquer approach is used to analyze both channel loss budget and eye diagrams. Effective driver equalization, interconnect loss and eye opening are the metrics used to optimize the link by means of Design of Experiments and a Response Surface Model. Main factors affecting the time budget of the link are cable's length and on board discontinuities.