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This register, together with the DBALO register, enables the TMC to locate the trace buffer in system memory. It contains bits >= bit of the start address of the trace buffer in system memory. The width of this register is given by: (AXI_ADDR_WIDTH- 32), however, if AXI_ADDR_WIDTHis <= 32 bits, this register is reserved and access type is RAZ/WI. Modifying this register, other than when in Disabled state, results in UNPREDICTABLE behavior. Software must program it with an initial value before setting CTL.TraceCaptEn bit to 1.
The DBAHI register characteristics are:
The following figure shows the bit assignments.
The following table shows the bit assignments.
Table 9-392 DBAHI register bit assignments
Read-As-Zero, Writes Ignored.
Data Buffer High Address. Holds the upper bits, that is, bit and above, of the AXI address that is used to locate the trace buffer in the system.