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The ERRPIDR3 characteristics are:
Provides discovery information about the component.
For more information, see 'About the Peripheral identification scheme'.in the Arm® Architecture Reference Manual, Armv8, for Armv8-A architecture profile.
Implementation of this register is OPTIONAL.
This register is present only
when RAS is implemented.
Otherwise, direct accesses to ERRPIDR3 are RES0.
ERRPIDR3 is a 32-bit register.
The ERRPIDR3 bit assignments are:
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 | REVAND | CMOD |
Reserved, RES0.
Component revision.
This field reads as an IMPLEMENTATION DEFINED value.
Reserved, RES0.
IMPLEMENTATION DEFINED.
Component minor revision. ERRPIDR2.REVISION and this field together form the revision number of the component, with REVISION being the most significant part and REVAND the least significant part.
Component minor revision. ERRPIDR2.REVISION and ERRPIDR3.REVAND together form the revision number of the component, with ERRPIDR2.REVISION being the most significant part and ERRPIDR3.REVAND the least significant part. When a component is changed, ERRPIDR2.REVISION or ERRPIDR3.REVAND must be increased to ensure that software can differentiate the different revisions of the component. If ERRPIDR2.REVISION is increased then ERRPIDR3.REVAND should be set to 0b0000.
This field reads as an IMPLEMENTATION DEFINED value.
Customer Modified. If the value of this field is non-zero, then the component has IMPLEMENTATION DEFINED.modifications.
Customer Modified.
Indicates the component has been modified.
A value of 0b0000 means the component is not modified from the original design.
Any other value means the component has been modified in an IMPLEMENTATION DEFINED way.
For any two components with the same Unique Component Identifier:
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 | REVISION | CMOD |
|
Reserved, RES0.
IMPLEMENTATION DEFINED.
Component revision. When a component is changed, ERRPIDR3.REVISION must be increased to ensure that software can differentiate the different revisions of the component.
IMPLEMENTATION DEFINED.
Customer Modified.
Indicates the component has been modified.
A value of 0b0000 means the component is not modified from the original design.
Any other value means the component has been modified in an IMPLEMENTATION DEFINED way.
For any two components with the same Unique Component Identifier:
If the value of the CMOD fields of both components equals zero, the components are identical.
If the value of the CMOD field of either of the two components is non-zero, they might not be identical, even though they have the same Unique Component Identifier.
If the CMOD fields of both components have the same non-zero value, it does not necessarily mean that they have the same modifications.
This field reads as an IMPLEMENTATION DEFINED value.
Component | Offset |
---|---|
RAS | 0xFEC |
Accesses on this interface are RO.
1327/1209/2019 1518:1348; 391b5248b29fb2f001ef74792eaacbd6fc72f2116134483bd14dc8c12a99c984cbfe3431cc1c9707
Copyright © 2010-2019 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.
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