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This register, together with the DBAHI register, enables the TMC to locate the trace buffer in system memory. This register contains bits [31:0] of the start address of the trace buffer in system memory. This register is 32-bits wide if AXI_ADDR_WIDTHis >= 32-bits. If the AXI_ADDR_WIDTHis 0, this register is reserved and access type is RAZ/WI. Software must program it before enabling trace capture, and the programmed value must be aligned to the Trace Memory Data Width and the Frame Width. Programming an unaligned value results in UNPREDICTABLE behavior. Modifying this register other than when in Disabled state results in UNPREDICTABLE behavior.
The DBALO register characteristics are:
The following figure shows the bit assignments.
The following table shows the bit assignments.
Table 9-391 DBALO register bit assignments
Data Buffer Low Address. Holds the lower 32 bits of the AXI address that is used to locate the trace buffer in system memory.