12th Generation Intel® Core™ Processors Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767625 | 07/13/2023 | Public |
Device Command (CMD) – Offset 4
Device Command
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 Reporting 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 Enable (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 | Video Palette Snooping (VPS) Reserved per PCI-Express spec. |
4 | 0x0 | RO | Memory Write Invalidate (MWI) Reserved per PCI-Express spec. |
3 | 0x0 | RO | Special Cycle Enable (SCE) Reserved per PCI-Express and PCI bridge spec. |
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) IO Space Enable. Not implemented. |