Intel® Core™ Ultra 200S, Intel® Core™ Ultra 200S Plus ,Intel® Core™ Ultra 200HX and 200HX Plus Series Processors

Datasheet, Volume 1 of 2

ID Date Version Classification
832586 03/17/2026 Public
Document Table of Contents
LAM

PCH Multiple External eSPI Device Support

For the Direct eSPI interface, there is only one eSPI chip select between the processor and the PCH. The processor Direct eSPI controller initializes the PCH Direct eSPI target and the four channels during the initialization flow. However, the processor Direct eSPI controller supports multiple external eSPI devices connected to the PCH eSPI controller including the peripheral channel, OOB channel, and VW channel. The Flash channel is only supported on CS0 on the PCH eSPI controller.