12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767625 | 07/13/2023 | Public |
Device Enable (DEVEN_0_4_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 | 0x0 | RW/L | (D6F1EN) 0: Bus 0 Device 6 Function 1 is disabled and not visible. |
17 | 0x1 | RW/L | (D10EN) 0: Bus 0 Device 10 is disabled and not visible. |
16 | 0x1 | RW/L | (D6F2EN) 0: Bus 0 Device 6 Function 2 is disabled and not visible. |
15 | 0x1 | RW/L | (D8EN) 0: Bus 0 Device 8 is disabled and not visible. |
14 | 0x1 | RW/L | (D14F0EN) VMD Enable - |
13 | 0x0 | RW/L | (D6F0EN) 0: Bus 0 Device 6 Function 0 is disabled and not visible. |
12 | 0x1 | RW/L | (D9EN) 0: Bus 0 Device 9 is disabled and not visible. |
11 | 0h | RO | Reserved |
10 | 0x1 | RW/L | (D5EN) 0: Bus 0 Device 5 is disabled and not visible. |
9:8 | 0h | RO | Reserved |
7 | 0x1 | RW/L | (D4EN) 0: Bus 0 Device 4 is disabled and not visible. |
6 | 0x1 | RW/L | (D3F7EN) NVMe - Device 3 function 7 enable. |
5 | 0x0 | RW/L | (D3F0EN) NVMe - Device 3 function 0 enable. |
4 | 0x1 | RW/L | (D2EN) 0: Bus 0 Device 2 is disabled and hidden |
3 | 0x1 | RW/L | (D1F0EN) 0: Bus 0 Device 1 Function 0 is disabled and hidden. |
2 | 0x1 | RW/L | (D1F1EN) 0: Bus 0 Device 1 Function 1 is disabled and hidden. |
1 | 0x1 | RW/L | (D1F2EN) 0: Bus 0 Device 1 Function 2 is disabled and hidden. |
0 | 0x1 | RO | (D0EN) Bus 0 Device 0 Function 0 may not be disabled and is therefore hardwired to 1. |