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CHAPTER 2 DEPENDENCE FUNCTIONS
■ Frame Number and Step Number in Single Trace
The sampled trace data is numbered in frame units. This number is called the frame number.
When displaying trace data, the starting location in the trace buffer can be specified using the frame number.
The trace data at the point where the sequencer termination trigger occurs is numbered 0; trace data sampled
before reaching the trigger point is numbered negatively, and the data sampled after the trigger point is
numbered positively (See Figure 2.2-11).
If there is no sequencer termination trigger point available, the trace data sampled last is numbered 0.
Figure 2.2-11 Frame Number in Single Trace
This program can analyze the single trace result and sort the buffer data in execution instruction units (only
when the MCU execution mode is the debugging mode).
In this mode, the following information is grouped as one unit, and each information unit is numbered. This
number is called the step number.
- Execution instruction mnemonic information
- Data access information
- Device status information
The step number at the sequencer termination trigger is numbered 0; information sampled before reaching the
trigger point is numbered negatively, and information sampled after the trigger point is numbered positively.
If there is no sequencer termination trigger point, the information sampled last is numbered 0.
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-3
-2
-1
0
+1
+2
+3
.
.
.
(Trigger point)
Delayed frames