C10.49 Context ID Comparator Control Register 0

The TRCCIDCCTLR0 characteristics are:

Purpose
Controls the mask value for the context ID comparators.
Usage constraints
  • Accepts writes only when the trace unit is disabled.
  • If software uses the TRCCIDCVRn registers, where n=0 to 3, then it must program this register.
  • If software sets a mask bit to 1 then it must program the relevant byte in TRCCIDCVRn to 0x00.
Configurations
Available in all configurations.
Attributes
See C10.1 ETM register summary.
Figure C10-48 TRCCIDCCTLR0 bit assignments
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[31:4]

Reserved, res0.

COMP0, [3:0]

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 external debug interface, offset 0x680.

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