Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
ID | Date | Version | Classification |
---|---|---|---|
615146 | 08/09/2019 | 1.2 | Public |
Device Capabilities (DEVCAP) – Offset 74
This register is not affected by D3HOT to D0 reset or FLR.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
30:29 | - | - | Reserved
|
28 | 1b | RW/L | Functional Level Reset (FLR) A 1 indicates that the Intel HD Audio subsystem supports the Function |
27:26 | 00b | RO | Captured Slot Power Limit Scale (SPLS) Hardwired to 0. |
25:18 | 00h | RO | Captured Slot Power Limit Value (SPLV) Hardwired to 0. |
17:15 | - | - | Reserved
|
14 | 0b | RO | Power Indicator Present (PIP) Hardwired to 0. |
13 | 0b | RO | Attention Indicator Present (AIP) Hardwired to 0. |
12 | 0b | RO | Attention Button Present (ABP) Hardwired to 0. |
11:9 | 000b | RW/L | Endpoint L1 Acceptable Latency (L1CAP) This bit is a RW/L. It will appear as RO to WHQL testing while allowing BIOS to write a value at boot that is determined by system testing. |
8:6 | 000b | RW/L | Endpoint L0s Acceptable Latency (L0SCAP) This bit is a RW/L. It will appear as RO to WHQL testing while allowing BIOS to write a value at boot that is determined by system testing. |
5 | 0b | RO | Extended Tag Field Support (ETCAP) Indicates 5 bit tag supported. |
4:3 | 00b | RO | Phantom Functions Supported (PFCAP) Indicates phantom functions notsupported. |
2:0 | 000b | RO | Max Payload Size Supported (MPCAP) Indicates 128B maximum payloadsize capability. |