Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2
| ID | Date | Version | Classification |
|---|---|---|---|
| 834576 | 10/10/2024 | 001 | Public |
DAP USB 3.0 Port <N> Status (DAP_ESS_PORT_STATUS_REG_0_MMIO) – Offset 8acc
Control and status registers for all DRD eSS links.
All bits in this register must be in the Always ON Power domain (un-gated SUS or AON as appropriate).
The register applies to individual port. The offset of each port: 0x8ACC + N*0x10.
For example:
Port 0 offset: 0x8ACC
Port 1 offset: 0x8ADC
Port 2 offset: 0x8AEC
...
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:16 | 0h | RO | Reserved (RSVD1) Hardwired to 0. |
| 15 | 0h | RO | Hardware VBus (HARDWARE_VBUS) Indicates live value of HW VBus signal. This bit only applies to Port 0 when configured as micro AB |
| 14 | 0h | RO | Reserved |
| 13:8 | 0h | RO | Reserved (RSVD2) Hardwired to 0. |
| 7:0 | 10h | RO/V | Operation State (OPERATION_STATE) This field reflect live value of the DRD operation states with one-hot encodings stipulated as follows: |