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The RAM Write Pointer High register sets bits >= bit of the write pointer that is used to write entries into the trace memory. Software must program it before enabling trace capture.
The RWPHI register characteristics are:
The following figure shows the bit assignments.
The following table shows the bit assignments.
Table 9-389 RWPHI register bit assignments
Read-As-Zero, Writes Ignored.
RAM Write Pointer High. Bits  and above of the RAM write pointer.