Command (CMD) – Offset 4 - 1.2 - ID:615146 | Intel® 400 Series Chipset On-Package Platform Controller Hub

Introduction
8254 Timer
Advanced Programmable Interrupt Controller (APIC)
APIC Indirect
CNVi PCI Configuration
DCI PCR
- DCI Control (ECTRL)
EMMC Additional
EMMC Memory Mapped
EMMC PCI Configuration
eMMC PCR
- Dynamic Clock Gating Control (GPPRVRW1)
Enhanced SPI (eSPI) PCI Configuration
eSPI PCR
FIA Configuration PCR
GbE Configuration
GbE Memory Mapped I/O
Generic SPI (GSPI) Additional
Generic SPI (GSPI) DMA Controller
Generic SPI (GSPI) Memory Mapped
GPIO Community 0
GPIO Community 1
GPIO Community 2
GPIO Community 3
GPIO Community 4
GSPI PCI Configuration
High Definition Audio (D31:F3) Memory Mapped I/O
High Definition Audio (D31:F3) PCI Configuration
HPET Memory Mapped
I2C Additional
I2C DMA Controller
I2C Memory Mapped
I2C PCI Congifuration
IDE Redirect PCI Configuration (D22:F2)
Integrated Clock (ICC) Configuration
- CMU_ONE_DWORD25 (cmu_one_dword25)
Intel RST for PCIe Storage (Remapping) PCI Configuration (D24:F0)
Intel RST for PCIe Storage MMIO
Intel(R) Management Engine Interface PCI Configuration
Intel(R) MEI MMIO
- DEVIDLE Control (HECI1_DEVIDLEC)
Intel(R) Trace Hub Configuration
Intel® HD Audio PCR
- Function Configuration (FNCFG)
Interrupt
Interrupt PCR
IO Trap
ISH
ISH PCH Configuration
ISH PCR
- Power Management Control (PMCTL)
Keyboard and Text (KT) Additional Configuration
- Power Management Control and Status (KT_CSXE_PMD_PMCSRBSE_PMCSR)
Keyboard and Text (KT) PCI Configuration (D22:F3)
LPC Configuration
LPC PCR
- General Control And Function Disable (GCFD)
OPI PCR
P2SB PCI Configuration
PCI Express* Port Configuration
PMC I/O Based
PMC Memory Mapped
PMC SSRAM PCI Configuration
Power Management Configuration
Processor Interface Memory
PSF1
PSF2
PSF3
PSF4
PSF5
RTC Indexed
RTC PCR
SATA ABAR
SATA AIDP
- AHCI Index Register (INDEX)
- AHCI Data Register (DATA)
SATA Configuration
SATA Initialization (SIR) Index
SATA MXPBA
- MSI-X Pending Bit Array QW 0 (MXPQW0_DW0)
SATA MXTBA
SDXC (SD Card) PCR
- Dynamic Clock Gating Control (GPPRVRW1)
SDXC Additional Memory Mapped
SDXC Memory Mapped
SDXC PCI Configuration
SMBus Configuration
SMBus I/O and Memory Mapped I/O
SMBus PCR
SMBus TCO I/O
SPI Configuration
SPI Memory Mapped
Thermal Reporting Configuration
Thermal Reporting Memory Mapped
UART Additional Memory Mapped
UART DMA Controller
UART Memory Mapped
UART PCI Configuration
xDCI MMIO Device
xDCI MMIO Global
xDCI PCI Configuration
xHCI Configuration
xHCI Memory Mapped

Command (CMD) – Offset 4

Bit Range	Default	Access	Field Name and Description
14:11	-	-	Reserved
10	0b	RW	Interrupt Disable (ID) Enables the device to assert an INTx#. When set, the Intel(r) HD Audio controller's INTx# signal will be de-asserted. When cleared, the INTx# signal may be asserted. Note that this bit does not affect the generation of MSI's.
9	0b	RO	Fast Back to Back Enable (FBE) Not implemented. Hardwired to 0.
8	0b	RW	SERR Enable (SEN) Functionality not implemented. This bit is R/W to pass PCIe compliance testing.
7	0b	RO	Wait Cycle Control (WCC) Not implemented. Hardwired to 0.
6	0b	RW	Parity Error Response (PER) Functionality not implemented. This bit is R/W to pass PCIe compliance testing.
5	0b	RO	VGA Palette Snoop (VPS) Not implemented. Hardwired to 0.
4	0b	RO	Memory Write and Invalidate Enable (MWI) Not implemented. Hardwired to 0.
3	0b	RO	Special Cycle Enable (SCE) Not implemented. Hardwired to 0.
2	0b	RW	Bus Master Enable (BME) 1 = Enable, 0 = Disable. Controls standard PCI Express bus mastering capabilities for Memory and IO, reads and writes. Note that this also controls MSI generation since MSI are essentially Memory writes.
1	0b	RW	Memory Space Enable (MSE) When set, enables memory space accesses to the Intel HD Audio controller.
0	0b	RO	I/O Space (IOS) The Intel HD Audio controller does not implement IO Space, therefore this bit is hardwired to 0.

Status (STS)

Device ID (DID) Status (STS)