12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767625 | 07/13/2023 | Public |
Device Capabilities (DCAP) – Offset 44
Device Capabilities
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31:29 | 0x0 | RO | Reserved (RSVD_M) Reserved. |
28 | 0x0 | RO | Function Level Reset Capable (FLRC) Not supported in Root Ports |
27:26 | 0x0 | RO | Captured Slot Power Limit Scale (CSPS) Not supported. |
25:18 | 0x0 | RO | Captured Slot Power Limit Value (CSPV) Not supported. |
17:16 | 0h | RO | Reserved |
15 | 0x1 | RO | Role Based Error Reporting (RBER) Indicates that this device implements the functionality defined in the Error Reporting ECN as required by the PCI Express 1.1 spec. |
14 | 0x0 | RO | Reserved. On previous version of the specification this was Power Indicator Present (PIP) Reserved. On previous version of the specification this was Power Indicator Present |
13 | 0x0 | RO | Reserved. On previous version of the specification this was Attention Indicator Present (AIP) Reserved. On previous version of the specification this was Attention Indicator Present |
12 | 0x0 | RO | Reserved. On previous version of the specification this was Attention Button Present (ABP) Reserved. On previous version of the specification this was Attention Button Present |
11:9 | 0x0 | RO | Endpoint L1 Acceptable Latency (E1AL) This field is reserved for root ports. |
8:6 | 0x0 | RO | Endpoint L0s Acceptable Latency (E0AL) This field is reserved for root ports. |
5 | 0x0 | RW/O | Extended Tag Field Supported (ETFS) The Root Port never needs to initiate a transaction as a Requester with the Extended Tag bits being set. This bit does not affect the root port's ability to forward requests as a bridge as the root port always supports forwarding requests with extended tags. |
4:3 | 0x0 | RO | Phantom Functions Supported (PFS) No phantom functions supported |
2:0 | 0x1 | RW/O | Max Payload Size Supported (MPS) BIOS should write to this field during system initialization. |