The CTI enables the debug logic, ETM, and PMU, to interact with each other and with other CoreSight components. This is called cross triggering. For example, you can configure the CTI to generate an interrupt when the ETM trigger event occurs.
The CTI is connected to a number of trigger inputs and trigger outputs. You can connect each trigger input to one or more trigger outputs. Figure 15.1 shows the debug system components and the available trigger inputs and trigger outputs.
The CTI also implements a synchronous channel interface as defined in the CoreSight Architecture Specification for communication with other CoreSight components.