Intel® Core™ Ultra 200H and 200U Series Processors CFG and MEM Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 844345 | 01/29/2025 | 001 | Public |
Device Enable (DEVEN_0_0_0_PCI) – Offset 54
Allows for enabling/disabling of PCI devices and functions that are within the CPU package. The table below the bit definitions describes the behavior of all combinations of transactions to devices controlled by this register. All the bits in this register are Intel TXT Lockable.
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:19 | 0h | RO | Reserved |
| 18 | 0h | RW/L | (D6F1EN) This field has been deprecated. Please see South_IOE_Decode_0_0_0_MCHBAR_IMPH. |
| 17 | 1h | RW/L | (D10EN) 0: Bus 0 Device 10 is disabled and not visible. |
| 16 | 0h | RW | (D6F2EN) 0: Bus 0 Device 6 Function 2 is disabled and not visible. |
| 15 | 1h | RW/L | (D8EN) 0: Bus 0 Device 8 is disabled and not visible. |
| 14 | 1h | RW/L | (D14F0EN) 0: Bus 0 Device 14 Function 0 is disabled and hidden. |
| 13 | 0h | RW/L | (D6F0EN) This field has been deprecated. Please see South_IOE_Decode_0_0_0_MCHBAR_IMPH. |
| 12 | 1h | RW/L | (D9EN) 0: Bus 0 Device 9 is disabled and not visible. |
| 11 | 0h | RO | Reserved |
| 10 | 1h | RW/L | (D5EN) 0: Bus 0 Device 5 is disabled and not visible. |
| 9:8 | 0h | RO | Reserved |
| 7 | 1h | RW/L | (D4EN) 0: Bus 0 Device 4 is disabled and not visible. |
| 6:5 | 0h | RO | Reserved |
| 4 | 1h | RW/L | (D2EN) 0: Bus 0 Device 2 is disabled and hidden |
| 3 | 0h | RW/L | (D1F0EN) This field has been deprecated. Please see South_IOE_Decode_0_0_0_MCHBAR_IMPH. |
| 2:1 | 0h | RO | Reserved |
| 0 | 1h | RO | (D0EN) Bus 0 Device 0 Function 0 may not be disabled and is therefore hardwired to 1. |