Altera cyclone V Technical Reference page 718

10-8
Cross Trigger Interface
Cross Trigger Interface
CTIs allow trigger sources and sinks to interface with the ECT. Each CTI supports up to eight trigger
inputs and eight trigger outputs, and is connected to a CTM.
inputs, trigger outputs, and CTM channels of a CTI.
Figure 10-3: CTI Connections
The following figure shows the eight potential trigger input and trigger output connections that are
supported.
The HPS debug system contains the following CTIs:
• csCTI—performs cross triggering between the STM, ETF, ETR, and TPIU.
• FPGA-CTI—exposes the cross-triggering system to the FPGA fabric.
• CTI-0 and CTI-1—reside in the MPU debug subsystem. Each CTI is associated with a processor and
the processor's PTM.
Cross Trigger Matrix
A CTM is a transport mechanism for triggers traveling from one CTI to one or more CTIs or CTMs. The
HPS contains two CTMs. One CTM connects csCTI and FPGA-CTI; the other connects CTI-0 and CTI-1.
The two CTMs are connected together, allowing triggers to be transmitted between the MPU debug
subsystem, the debug system, and the FPGA fabric.
Each CTM has four ports and each port has four channels. Each CTM port can be connected to a CTI or
another CTM.
Altera Corporation
CTI
Trigger Inputs
Figure 10-3
Trigger Outputs
shows the relationship of trigger
Channel
Connection
CoreSight Debug and Trace
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2016.10.28