| Field Name | Bits | Type | Reset Value | Description |
|---|
| CCSIZE | 28:25 | roRead-only | 0x0 | Indicates the size of the cycle counter in bits minus 12.and so on up to 0b1000, indicating the cycle counter is 20 bits in length.All other values are reserved.If cycle counting is not implemented, as indicated by IDR0., this field is 0b0000. |
| DVSIZE | 24:20 | roRead-only | 0x0 | Indicates the data value size in bytes. |
| DASIZE | 19:15 | roRead-only | 0x0 | Indicates the data address size in bytes. |
| VMIDSIZE | 14:10 | roRead-only | 0x1 | Indicates the VMID size. |
| CIDSIZE | 9:5 | roRead-only | 0x4 | Indicates the Context ID size. |
| IASIZE | 4:0 | roRead-only | 0x8 | Indicates the instruction address size. |