Intel® Core™ Ultra 200H and 200U Series Processors for Edge Platforms
Datasheet Addendum
Enhanced Serial Peripheral Interface (eSPI)
Note: For any capability not mentioned in this section, refer to Chapter 40 Enhanced Serial Peripheral Interface (eSPI) of Intel® Core™ Ultra 200H and 200U Series Processors Datasheet Volume 1 of 2 (RDC Document #842704)
1. Functional Overview
The eSPI controller supports up to 4 devices. The eSPI controller supports 20 MHz, 25 MHz, 33 MHz, and 50 MHz. An eSPI device can support frequencies lower than the recommended maximum frequency (50 MHz). In addition, the eSPI device must support a minimum frequency of 20 MHz for default (reset) communication between the host and device.
Second Target Device Presence
| Signal Name | Type | Description | Availability |
| GPP_A13/ESPI_CS1#/USB-C_GPP_A13 | O | eSPI Chip Select1: Driving CS# signallow to select eSPI device for the transaction. | H/U Processor Line |
| GPP_A14/ESPI_CS2#/USB-C_GPP_A14 | O | eSPI Chip Select 2: Driving CS# signal low to selecteSPI device for the transaction. | H/U Processor Line |
| GPP_A15/ESPI_CS3#/USB-C_GPP_A15 | O | eSPI Chip Select 3: Driving CS# signal low to selecteSPI device for the transaction. | H/U Processor Line |
| GPP_A16/ESPI_ALERT0#/USB-C_GPP_A16 | I | eSPI Alert 0: Alert signal from eSPI deviceto the Processor. Note: If only a single device is connected, the eSPI Compatibility Specification requires that the device must operate with in-band Alert# signaling in order to free up the GPIO pin required for the discrete Alert# pin. | H/U Processor Line |
| GPP_A17/ESPI_ALERT1#/USB-C_GPP_A17 | I | eSPI Alert 1: Alert signal from eSPI device to the Processor. Note: If only a single device is connected, the eSPI Compatibility Spec requires that the device must operate with in-band Alert# signaling in order to free up the GPIO pin required for the discrete Alert# pin. | H/U Processor Line |
| GPP_A18/ESPI_ALERT2#/USB-C_GPP_A18 | I | eSPI Alert 2: Alert signal from eSPI device to the Processor. Note: If only a single device is connected, the eSPI Compatibility Spec requires that the device must operate with in-band Alert# signaling in order to free up the GPIO pin required for the discrete Alert# pin. | H/U Processor Line |
| GPP_A19/ESPI_ALERT3#/USB-C_GPP_A19 | I | eSPI Alert 3: Alert signal from eSPI device to the Processor. Note: If only a single device is connected, the eSPI Compatibility Spec requires that the device must operate with in-band Alert# signaling in order to free up the GPIO pin required for the discrete Alert# pin. | H/U Processor Line |
| Signal | Resistor Type | Value | Notes |
| ESPI_CS [3:0] # | Pull-up | 20 kohm +/- 30% | |
| ESPI_ALERT [3:0] # | Pull-up | 20 kohm +/- 30% |