ARM Cortex-A35 User Manual

C11.59 Software Lock Access Register
The TRCLAR characteristics are:
Purpose
Controls access to registers using the memory-mapped interface, when PADDRDBG31 is
LOW.
When the software lock is set, write accesses using the memory-mapped interface to all ETM
trace unit 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
Accessible only from the memory-mapped interface.
Configurations
Available in all configurations.
Attributes
See C11.1 ETM register summary on page C11-733.
31
0
KEY
Figure C11-57 TRCLAR bit assignments
KEY, [31:0]
Software lock key value:
0xC5ACCE55 Clear the software lock.
All other write values set the software lock.
The TRCLAR can be accessed through the external debug interface, offset 0xFB0.
C11 ETM registers
C11.59 Software Lock Access Register
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C11-807
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ARM Cortex-A35 Specifications

General

Brand	ARM
Model	Cortex-A35
Category	Computer Hardware
Language	English