13.7.27 Context ID Comparator Control Register 0

The TRCCIDCCTLR0 characteristics are:
Purpose
Contains Context ID mask values for the TRCCIDCVR0 register.
Usage constraints
  • Only accepts writes when the trace unit is disabled.
  • If software sets a mask bit to 1 then it must program the relevant byte in TRCCIDCVRn to 0x00.
Configurations
There is one Context ID comparator, set by TRCIDR4.NUMCIDC.
Attributes
A 32-bit RW trace register.
The following figure shows the TRCCIDCCTLR0 bit assignments.
Figure 13-28 TRCCIDCCTLR0 bit assignments
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The following table shows the TRCCIDCCTLR0 bit assignments.

Table 13-30 TRCCIDCCTLR0 bit assignments

Bits Name Function
[31:4] - Reserved, RES0.
[3:0] COMP0
Controls the mask value that the trace unit applies to TRCCIDCVR0. Each bit in this field corresponds to a byte in TRCCIDCVR0. When a bit is:
0The trace unit includes the relevant byte in TRCCIDCVR0 when it performs the Context ID comparison.
1The trace unit ignores the relevant byte in TRCCIDCVR0 when it performs the Context ID comparison.
The TRCCIDCCTLR0 can be accessed through the internal memory-mapped interface and the external debug interface, offset 0x680.
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