4.2.2. CPUID Register

The CPUID characteristics are:

Purpose

Contains the part number, version, and implementation information that is specific to this processor.

Usage constraints

There are no usage constraints.

Attributes

Figure 4.2 shows the CPUID bit register assignments.

Figure 4.2. CPUID bit register assignments

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Table 4.3 shows the CPUID register bit assignments.

Table 4.3. CPUID bit register assignments

BitsFieldFunction
[31:24]IMPLEMENTER

Implementer code:

0x41

ARM.

[23:20]VARIANT

Major revision number n in the rnpm revision status. See Product revision status:

0x1.

[19:16]ARCHITECTURE

Indicates the architecture, ARMv8-M baseline:

0xC.

[15:4]PARTNO

Cortex-M23 processor part number:

0xD20.

[3:0]REVISION

Minor revision number m in the rnpm revision status. See Product revision status.

0x0.


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