Device Idle Control (DEVIDLE_CONTROL) – Offset 24c - 001 - ID:834576 | Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2

Introduction
CNVi WiFi* PCI Configuration
eSPI PCI Configuration
eSPI PCR
GPIO Commumity 0
GPIO Commumity 1
GPIO Commumity 2
GPIO Commumity 3
GPIO Commumity 4
GPIO Commumity 5
GSPI Additional MMIO
GSPI DMA
GSPI MMIO
GSPI PCI Configuration
I2C Additional MMIO
I2C DMA
I2C MMIO
I3C / I2C / UART / GSPI PCR
I3C Additional MMIO
I3C DMA
I3C MMIO
I3C PCI Configuration
IDE-Redirect (IDE-R) PCI Configuration
Integrated GbE PCI Configuration
Integrated Sensor Hub (ISH) MMIO
Integrated Sensor Hub (ISH) PCI Configuration
Intel(R) Management Engine Interface (MEI) MMIO
Intel(R) Management Engine Interface (MEI) PCI Configuration
Intel® High Definition Audio MMIO
Intel® High Definition Audio PCI Configuration
Intergrated GbE MMIO
Keyboard and Text (KT) PCI Configuration
P2SB PCI Configuration
PCIe* PCI Configuration
PMC I/O Based
PMC MMIO
PMC PCI Configuration
PMC SSRAM PCI Configuration
RTC Index
RTC PCR
SATA ABAR
SATA AIDPBA
- AHCI Index Register (INDEX)
- AHCI Data Register (DATA)
SATA Initialization (SIR) Index
SATA MXPBA
- MSI-X Pending Bit Array QW 0 (MXPQW0_DW0)
- MSI-X Pending Bit Array QW 1 (MXPQW0_DW1)
SATA MXTBA
SATA PCI Configuration
SATA Port 0 ABAR
SATA Port 1 ABAR
SATA Port 2 ABAR
SATA Port 3 ABAR
SATA Port 4 ABAR
SATA Port 5 ABAR
SATA Port 6 ABAR
SATA Port 7 ABAR
SMBus MMIO and I/O
SMBus PCI Configuration
SMBus PCR
SMBus TCO I/O
SPI MMIO
SPI PCI Configuration
THC MMIO Common
- Device Idle Control Register (THC_M_CMN_DEVIDLECTRL)
- THC LTR Control Register (THC_M_CMN_LTR_CTRL)
THC MMIO Port
THC PCI Configuration
UART Additional MMIO
UART DMA
UART MMIO
UART PCI Configuration
USB MMIO
USB PCI Configuration
xDCI MMIO Device
xDCI MMIO Global
xDCI PCI Configuration

Device Idle Control (DEVIDLE_CONTROL) – Offset 24c

Bit Range	Default	Access	Field Name and Description
31:5	0h	NA	reserved (reserved0) reserved
4	0h	RO	intr_req_capable (intr_req_capable) intr_req_capable, Set to 1 by HW if it is capable of generating an interrupt on command completion, else 0
3	1h	RW/1C	restore_required (restore_required) When set (by HW), SW must restore state to the IP. The state may have been lost due to a reset or full power lost. SW clears the bit by writing a 1. This bit will be set on initial power up. Note: If SW is setting bit 3 together with any other bit of this register, only bit 3 is written; SW is required to do 2 writes in this case : bit 3 first and all other bits second. This (Restore Required) field of the D0i3C register (defined in the chassis power gating HAS) needs to be preserved during the S0ix restore window even though the D0i3C register is being restored (during restore window, RR bit should be restored to 1
2	0h	RW	devidle (devidle) devidle, SW sets this bit to 1 to move the function into the DevIdle state. Writing this bit to 0 will return the function to the fully active D0 state (D0i0)
1	0h	NA	intr_req (intr_req) intr_req, Reserved
0	0h	RO	cmd_in_progress (cmd_in_progress) cmd_in_progress, HW sets this bit on a 1->0 or 0->1 transition of DEVIDLE. While set, the other bits in this register are not valid and it is illegal for SW to write to any bit in this register. HW clears this bit upon completing the DevIdle transition command. When clear, all the other bits in the register are valid and SW may write to any bit. If Interrupt Request (IR) was set for the current command, HW may clear this bit before the interrupt has been made visible to SW, since when SW actually handles a particular interrupt is not visible to the HW. SW writes to this bit have no effect.

Capabilities (CAPABLITIES)

Reserved (Reserved2) Capabilities (CAPABLITIES)