- EMBEDDED UNIVERSAL SERIAL BUS USB DEBUG EUD FOR MULTI-INTERFACED DEBUGGING IN ELECTRONIC SYSTEMS

摘要

An integrated Universal Serial Bus (USB) debug (EUD) for multi-interfaced debugging in electronic systems is disclosed. Electronic systems include complex integrated circuits (ICs) that require large-scale testing and debugging to ensure good quality and performance. In exemplary aspects, EUD is provided in an electronic system. The EUD is configured to transmit control information to a plurality of internal debugging interfaces in the electronic system and / or to collect debugging information from a plurality of internal debugging interfaces in the electronic system. The EUD is also configured to convert the debugging information into the USB format so that the debugging information can be accessed externally via the USB interface provided by the electronic system. EUD can provide non-invasive monitoring of electronic systems. The electronic system can use the USB port for communications in mission mode while EUD is enabled. Additionally, the electronic system can turn on or off all system clocks during the power-save mode, while the EUD continues to function.