A status notification method in a USB Type-C interface circuit, a device having a USB Type-C interface circuit, and an information processing system.

摘要

PROBLEM TO BE SOLVED: To improve reliability and maintainability. SOLUTION: In a state notification method in a USB Type-C interface circuit in which a device and a host device are connected via a Type-C cable compliant with the USB (Universal Serial Bus) Type-C standard, the device controller is a device. Detects abnormal conditions that occur inside. The device controller notifies the Type-C controller of the detection information indicating the detected abnormal state. The Type-C controller analyzes the cause from the abnormal state based on the detection information and obtains the analysis result. The Type-C controller uses the CC line to notify the host device of the detection information and the analysis result. [Selection diagram] Fig. 3