12.4. CTM

The CoreSight CTI channel signals from all the processors are combined using a simplified Cross Trigger Matrix (CTM) so that a single cross trigger channel interface is presented in the Cortex-A57 MPCore multiprocessor. The CTM can combine up to four internal channel interfaces, corresponding to each processor, and one external channel interface.

In the simplified CTM:

The internal channel acknowledgement signals from the CTIs are not used because the CTIs and the CTM are in the same PCLKDBG domain.

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