Secondary PCI Express Extended Capability Header (SPEECH) – Offset a30 - 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
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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

Secondary PCI Express Extended Capability Header (SPEECH) – Offset a30

This is the Secondary PCI Express Extended Capability Header registers. Refer description for each individual field below for more details of the register functionality.

Bit Range	Default	Access	Field Name and Description
31:20	0h	RW/O	Next Capability Offset (NCO) This field contains the offset to the next PCI Express Capability structure or 000h if no other items exist in the linked list of Capabilities. For Extended Capabilities implemented in Configuration Space, this offset is relative to the beginning of PCI compatible Configuration Space and thus must always be either 000h (for terminating list of Capabilities) or greater than 0FFh. The bottom 2 bits of this offset are Reserved and must be implemented as 00b and software must mask them to allow for future uses of these bits.
19:16	0h	RW/O	Capability Version (CV) This field is a PCI-SIG defined version number that indicates the version of the Capability structure present. For systems that support Secondary PCI Express Extended Capability, BIOS should write a 1h to this register else it should write 0.
15:0	0h	RW/O	PCI Express Extended Capability ID (PCIEECID) This field is a PCI-SIG defined ID number that indicates the nature and format of the Extended Capability. PCI Express Extended Capability ID for the Secondary PCI Express Extended Capability is 0019h. For systems that support Secondary PCI Express Extended Capability, BIOS should write a 0019h to this register else it should write 0.

Bit Range

Default

Access

Field Name and Description

31:20

RW/O

Next Capability Offset (NCO)

This field contains the offset to the next PCI Express Capability structure or 000h if no other items exist in the linked list of Capabilities.
For Extended Capabilities implemented in Configuration Space, this offset is relative to the beginning of PCI compatible Configuration Space and thus must always be either 000h (for terminating list of Capabilities) or greater than 0FFh.
The bottom 2 bits of this offset are Reserved and must be implemented as 00b and software must mask them to allow for future uses of these bits.

19:16

RW/O

Capability Version (CV)

This field is a PCI-SIG defined version number that indicates the version of the Capability structure present.
For systems that support Secondary PCI Express Extended Capability, BIOS should write a 1h to this register else it should write 0.

15:0

RW/O

PCI Express Extended Capability ID (PCIEECID)

This field is a PCI-SIG defined ID number that indicates the nature and format of the Extended Capability.
PCI Express Extended Capability ID for the Secondary PCI Express Extended Capability is 0019h. For systems that support Secondary PCI Express Extended Capability, BIOS should write a 0019h to this register else it should write 0.

Link Control 3 (LCTL3)

RP PIO Header Log DW4 Register (RPPIOHLR_DW4) Link Control 3 (LCTL3)