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3.4.53. Software Lock Access Register

The TRCLAR characteristics are:


Controls access to registers using the memory-mapped interface.

When the software lock is set, write accesses using the memory-mapped interface to all ETM-R7 registers are ignored except for write accesses to the TRCLAR.

When the software lock is set, read accesses of TRCPDSR do not change the TRCPDSR.STICKYPD bit. Read accesses of all other registers are not affected.

Usage constraints

There are no usage constraints.


Available in all configurations.


See the register summary in Table 3.1 and Table 3.11.

Figure 3.60 shows the TRCLAR bit assignments.

Figure 3.60. TRCLAR bit assignments

Figure 3.60. TRCLAR bit assignments

Table 3.71 shows the TRCLAR bit assignments.

Table 3.71. TRCLAR bit assignments

Software lock key value:


Clear the software lock.

All other write values set the software lock.

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