Debugging USB Type-C Driver # 1

USB Type-C provide multiple functions through USB Type-C connector. From Microsoft. it had redefine the driver as " Microsoft provides a USB Type-C Connector System Software Interface (UCSI) Specification-compliant driver for ACPI transport. "

Based on the USB Type-C driver, we call these drivers as USCI drivers.

Drivers combine with USB2.0 D+/D- and Super Speed TX/RX, V-Bus, Sideband Use (SBU) and Configuration Channel (CC), the matrix configurations through Type-C connector driver the USCI drivers to support various features through driver side.

First all, the USB Type-C cable is a plug and play device in the system. The different here was out side the traditional USB2.0 D+/D- with power delivery to init the USB device. USB Type-C still have V-Bus, Super Speed TX/RX devices which require the driver to init the features related drivers USB Type-C. These difference with combine drivers make the debugging with USB Type-C have more tasks effort to analysis the drivers in the system to understand working process cross various functions through Type-C. The sequence through UCSI drivers also contain drivers list to provide the topology to review USCI drivers in the system.

UCSI drivers combine with Windows Kernel drivers with multi-threads processes would let the debugging process more complex to understand the root cause when issue reproduced during test.

PD Protocol with Power delivery and power limitation combine with Type-C cable. These data and power combination behavior through USB Type-C let the analysis not only focus on Data Packets transfer but also power delivery.

#1 Just give a mindset to understand USCI Drivers with USB Type-C.