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CHAPTER 2 DEPENDENCE FUNCTIONS
Figure 2.4-1 Frame Number at Tracing
■ Trace Filter
To make effective use of the limited trace buffer capacity, in addition to the code fetch function, a trace filter
function is incorporated to provide a means of acquiring information about data accesses to a specific region.
The data trace filter function allows the following values to be specified for two regions:
- Address
- Address mask
- Access attribute (read/write)
Another function can be used so that sampling of redundant frames occupying two or more trace frames, such
as SLEEP and READY, can be reduced to sampling of one frame.
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-3
-2
-1
0 (Trigger point)