12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767625 | 07/13/2023 | Public |
Command Reg (CMD_MMIO) – Offset 8604
Mirror of physical register as CMD
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
15:11 | 0x0 | RO | Reserved (RSVD) Reserved |
10 | 0x0 | RW | Interrupt Disable (INTR_DIS) When cleared to 0, the function is capable of generating interrupts. When 1, the function can not generate its interrupt to the interrupt controller. Note that the corresponding Interrupt Status bit is not affected by the interrupt enable. |
9 | 0x0 | RO | Fast Back to Back Enable (FBE) Fast Back to Back Enable |
8 | 0x0 | RW | SERR# Enable (SERR) When set to 1, the XHC is capable of generating (internally) SERR#. |
7 | 0x0 | RO | Wait Cycle Control (WCC) Wait Cycle Control |
6 | 0x0 | RW | Parity Error Response (PER) When set to 1, the XHCI Host Controller will check for correct parity (on its internal interface) and halt operation when bad parity is detected during the data phase as recommended by the XHCI specification. Note that this applies to both requests and completions from the system interface. |
5 | 0x0 | RO | VGA Palette Snoop (VPS) VGA Palette Snoop |
4 | 0x0 | RO | Memory Write Invalidate (MWI) Memory Write Invalidate |
3 | 0x0 | RO | Special Cycle Enable (SCE) Special Cycle Enable |
2 | 0x0 | RW | Bus Master Enable (BME) When set, it allows XHC to act as a bus master. |
1 | 0x0 | RW | Memory Space Enable (MSE) This bit controls access to the XHC Memory Space registers. If this bit is set, accesses to the XHC registers are enabled. The Base Address register for the XHC should be programmed before this bit is set. |
0 | 0x0 | RO | I/O Space Enable (IOSE) Reserved as 0. Read-Only. |