AMDEVARCH, Activity Monitors Device Architecture Register

Defines the architect of the component. For Activity Monitors, this is Arm Limited.

Bits [31:28] are the JEP106 continuation code, 0b0100.

Bits [27:21] are the JEP106 identification code, 0b0111011.

Reads as 0b01000111011.

Access to this field is RO.

DEVARCH present. Indicates that the AMDEVARCH register is present.

Reads as 0b1.

Access to this field is RO.

Defines the architecture revision. For architectures defined by Arm this is the minor revision.

REVISION	Meaning
0b0000	Architecture revision is AMUv1.

All other values are reserved.

Access to this field is RO.

Defines this part to be an AMU component. For architectures defined by Arm this is further subdivided.

For AMU:

• Bits [15:12] are the architecture version, also identified as AMDEVARCH.ARCHVER.
• Bits [11:0] are the architecture part number, also identified as AMDEVARCH.ARCHPART.

AMDEVARCH.ARCHVER = 0x0, which corresponds to AMU architecture version AMUv1.

If FEAT_AMU_EXT32 is implemented, AMDEVARCH is 0xA66.

If FEAT_AMU_EXT64 is implemented, AMDEVARCH is 0xA67.

The value of this field is an IMPLEMENTATION DEFINED choice of:

ARCHID	Meaning
0x0A66	AMUv1, with FEAT_AMU_EXT32 implemented.
0x0A67	AMUv1, with FEAT_AMU_EXT64 implemented.

Access to this field is RO.