Intel® Core™ Ultra 200V Series Processors

Datasheet, Volume 1 of 2

ID Date Version Classification
829568 05/27/2025 004 Confidential
Document Table of Contents

WAIT States from eSPI Device

There are situations when the device cannot predict the length of the command packet from the controller. For non-posted transactions, the device is allowed to respond with a limited number of WAIT states.

A WAIT state is a 1-byte response code. They must be the first set of response byte from the device after the TAR cycles.