Intel® 700 Series Chipset Family On-Package Platform Controller Hub (PCH)

Datasheet, Volume 1 of 2
Supporting Raptor Lake - PX Platforms

ID 765585
Date 01/30/2023
Version 001
Document Table of Contents

Enhanced Serial Peripheral Interface (eSPI)

The PCH provides the Enhanced Serial Peripheral Interface (eSPI) to support connection of an EC (typically used in mobile platform) or an SIO (typically used in desktop platform) to the platform. Below are the key features of the interface:

  • 1.8 V support only
  • Support for Master Attached Flash and Slave Attached Flash.
  • Support for up to 50 MHz (configured by soft straps)
  • Up to quad mode support
  • Support for PECI over eSPI
  • Support for Multiple OOB Master (dedicated OOB channel for different OOB masters in the PCH such as PMC and CSME)
  • Transmitting RTC time/date to the slave device upon request
  • In-band messages for communication between the PCH and slave device to eliminate side-band signals.
  • Real time SPI flash sharing, allowing real time operational access by the PCH and slave device.

Acronyms

Acronyms

Description

EC

Embedded Controller

MAFCC

Master Attached Flash Channel Controller (MAFCC)

OOB

Out-of-Band

TAR

Turn-around cycle

References

Specification

Document Number/Location

Enhanced Serial Peripheral Interface (eSPI) Specifications

https://downloadcenter.intel.com/download/27055/eSPI

Platform Environment Control Interface (PECI 3.1) for 14nm, 10nm Processor Implementation Guide

630138