Yes. The Directed and Broadcast ENTTM CCCs (see specification Section 5.1.9.3.8) allow the Controller to enter and exit the test modes. Support for the ENTTM CCC is optional for I3C Targets.

The I3C v1.1+ and I3C Basic v1.1.1 specifications also define an optional Defining Byte for the GETCAPS CCC: the Read Fixed Test Pattern command (see specification Section 5.1.9.3.19). This provides simple Bus testing that can be supported by I3C Controllers and Targets.

FAQ Type: 
I3C