C10.36 ID Register 4

The TRCIDR4 characteristics are:

Purpose
Indicates the resources available in the ETM trace unit.
Usage constraints
There are no usage constraints.
Configurations
Available in all configurations.
Attributes
See C10.1 ETM register summary.
Figure C10-35 TRCIDR4 bit assignments
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NUMVMIDC, [31:28]

Indicates the number of VMID comparators available for tracing:

0x1One VMID comparator is available.
NUMCIDC, [27:24]

Indicates the number of CID comparators available for tracing:

0x1One Context ID comparator is available.
NUMSSCC, [23:20]

Indicates the number of single-shot comparator controls available for tracing:

0x1One single-shot comparator control is available.
NUMRSPAIR, [19:16]

Indicates the number of resource selection pairs available for tracing:

0x7Eight resource selection pairs are available.
NUMPC, [15:12]

Indicates the number of processor comparator inputs available for tracing:

0x0Processor comparator inputs are not implemented.
[11:9]

Reserved, res0.

SUPPDAC, [8]

Indicates whether the implementation supports data address comparisons: This value is:

0Data address comparisons are not implemented.
NUMDVC, [7:4]

Indicates the number of data value comparators available for tracing:

0x0Data value comparators not implemented.
NUMACPPAIRS, [3:0]

Indicates the number of address comparator pairs available for tracing:

0x4Four address comparator pairs are implemented.

The TRCIDR4 can be accessed through the external debug interface, offset 0x1F0.

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