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The PMPIDR4 characteristics are:
Provides information to identify a Performance Monitor component.
For more information, see 'About the Peripheral identification scheme'.
ThisImplementation registerof isthis presentregister only when FEAT_PMUv3_EXT is implemented and an implementation implements PMPIDR4. Otherwise, direct accesses to PMPIDR4 are RES0OPTIONAL.
If FEAT_DoPD is implemented, this register is in the Core power domain. If FEAT_DoPD is not implemented, this register is in the Debug power domain.
This register is required for CoreSight compliance.
PMPIDR4 is a 32-bit register.
This register is part of the PMU block.
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RES0 | SIZE | DES_2 |
Reserved, RES0.
Size of the component. Log2 of the number of 4KB pages from the start of the component to the end of the component ID registers.
Reads as 0b0000.
Access to this field is RO.
Designer, JEP106 continuation code, least significant nibble. For Arm Limited, this field is 0b0100.
This field has an IMPLEMENTATION DEFINED value.
Access to this field is RO.
This interface is accessible as follows:
Accesses to this register use the following encodings in the external debug interface:
PMPIDR4 can be accessed through the PMU block as follows:
Frame | Offset |
---|---|
PMU | 0xFD0 |
3005/0907/2022 1517:5708; 21c5a6dd0fdaf10a712e2f2d6fffbdbd66d4d96fb0421fa9a8865165f9b91af9b4a566111f866305
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