This document shows step-by-step how to decode USB transfers associated with higher-level protocols than USB. Enabling Global Connectivity Computer Access Technology Corporation Tel: (408) 727-6600, Fax: (408) 727 -6622 www.catc.com How to do File Based Decoding for USB Application Note Introduction This document shows step-by-step how to decode USB transfers associated with higher-level protocols than USB. As a pre-requisite it is assumed that the reader is familiar with the CATC Trace viewer software and is able to set the display to the transfer level. Introduction..........................................................................................……