Intel® Core™ Processor (Series 3)

Formerly known as Wildcat Lake, Datasheet, Volume 1 of 2

ID Date Version Classification
913965 05/19/2026 001 Public
Document Table of Contents
RFM

Private Configuration Space Port ID

The Processor incorporates a wide variety of devices and functions. The registers within these devices are mainly accessed through the primary interface, such as PCI configuration space and IO/MMIO space. Some devices also have registers that are distributed within the Processor Private Configuration Space at individual endpoints (Target Port IDs) which are only accessible through the Processor Sideband Interface. These Processor Private Configuration Space Registers can be addressed via SBREG_​BAR or through SBI Index Data pair programming. .

Private Configuration Space Register Target Port IDs

Processor Device/Function Type

Target Port ID (hex)

General Purpose I/O (GPIO) Community 0

F259h

General Purpose I/O (GPIO) Community 1

F25Ah

General Purpose I/O (GPIO) Community 3

F25Bh

General Purpose I/O (GPIO) Community 4

F25Ch
General Purpose I/O (GPIO) Community 5 F25Dh

PCIe Controller #1 (SPA)

F201h

PCIe Controller #3 (SPC)

F203h

SMBus

F26Bh

eSPI / SPI

F26Dh

xHCI

F209h

CNVi

F251h

PSF4

F2B0h

PSF6

F2B1h

PSF8

F2B2h
PSF14 F2B3h
PSF15 F2B4h

ISH Controller

F25Eh

USB 2.0

F222h

UART, I2C, GSPI, I3C

F265h

Integrated Clock Controller (ICC)

F273h
GbE F20Dh
Real Time Clock (Host) F26Ch
LSx F267h
UFS F20Eh