C11.36 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 C11.1 ETM register summary on page C11-733.
31 02324 16 15 8 7 342728 20 19
NUMDVCNUMPCNUMSSCCNUMCIDC
NUMACPAIRS
91112
NUMRCPAIRS
NUMVMIDC
SUPPDAC
RES0
Figure C11-35 TRCIDR4 bit assignments
NUMVMIDC, [31:28]
Indicates the number of VMID comparators available for tracing:
0x1 One VMID comparator is available.
NUMCIDC, [27:24]
Indicates the number of CID comparators available for tracing:
0x1 One Context ID comparator is available.
NUMSSCC, [23:20]
Indicates the number of single-shot comparator controls available for tracing:
0x1 One single-shot comparator control is available.
NUMRSPAIR, [19:16]
Indicates the number of resource selection pairs available for tracing:
0x7 Eight resource selection pairs are available.
NUMPC, [15:12]
Indicates the number of processor comparator inputs available for tracing:
0x0 Processor comparator inputs are not implemented.
[11:9]
Reserved, RES0.
SUPPDAC, [8]
Indicates whether the implementation supports data address comparisons: This value is:
0 Data address comparisons are not implemented.
NUMDVC, [7:4]
Indicates the number of data value comparators available for tracing:
C11 ETM registers
C11.36 ID Register 4
100236_0100_00_en Copyright © 2015–2017, 2019 Arm Limited or its affiliates. All rights
reserved.
C11-780
Non-Confidential
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