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13.8.33. ID Register 2

The TRCIDR2 characteristics are:

Purpose

Returns the maximum size of the following parameters in the trace unit:

  • Cycle counter.

  • Data value.

  • Data address.

  • VMID.

  • Context ID.

  • Instruction address.

Usage constraints

There are no usage constraints.

Configurations

Available in all configurations.

Attributes

See the register summary in Table 13.3.

Figure 13.35 shows the TRCIDR2 bit assignments.

Figure 13.35. TRCIDR2 bit assignments

Figure 13.35. TRCIDR2 bit assignments

Table 13.36 shows the TRCIDR2 bit assignments.

Table 13.36. TRCIDR2 bit assignments
BitsNameFunction
[31:29]-

Reserved, res0.

[28:25]CCSIZE

Size of the cycle counter in bits minus 12:

0x0

The cycle counter is 12 bits in length.

[24:20]DVSIZE

Data value size in bytes:

0x00

Data value tracing is not implemented.

[19:15]DASIZE

Data address size in bytes:

0x00

Data address tracing is not implemented.

[14:10]VMIDSIZE

Virtual Machine ID size:

0x1

Virtual Machine ID is 8 bits.

[9:5]CIDSIZE

Context ID size in bytes:

0x4

Maximum of 32-bit Context ID size.

[4:0]IASIZE

Instruction address size in bytes:

0x8

Maximum of 64-bit address size.


The TRCIDR2 can be accessed through the external debug interface, offset 0x1E8.

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