| GPP_A00/ESPI_IO0 | I/O | eSPI Data Signal 0: Bi-directional pin used to transfer data between the PCH and eSPI device. |
| GPP_A01/ESPI_IO1 | I/O | eSPI Data Signal 1: Bi-directional pin used to transfer data between the PCH and eSPI device |
| GPP_A02/ESPI_IO2/PRIMWARN#/PRIMPWRDNACK | I/O | eSPI Data Signal 2: Bi-directional pin used to transfer data between the PCH and eSPI device |
| GPP_A03/ESPI_IO3/PRIMACK# | I/O | eSPI Data Signal 3: Bi-directional pin used to transfer data between the PCH and eSPI device |
| GPP_A04/ESPI_CS0# | O | eSPI Chip Select 0: Driving CS# signal low to select eSPI device for the transaction. |
| GPP_A05/ESPI_CLK | O | eSPI Clock: eSPI clock output from the PCH to device. |
| GPP_A06/ESPI_RESET# | O | eSPI Reset: Reset signal from the PCH to eSPI device. |
| GPP_A07/ESPI_CS1# | O | eSPI Chip Select 1 :Driving CS# signal low to select eSPI device for the transaction. |
| GPP_A08/ESPI_CS2# | O | eSPI Chip Select 2:Driving CS# signal low to select eSPI device for the transaction. |
| GPP_A09/ESPI_CS3# | O | eSPI Chip Select 3:Driving CS# signal low to select eSPI device for the transaction. |
| GPP_A10/ESPI_ALERT0# | I | eSPI Alert 0 :Alert signal from eSPI device to the PCH. 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. |
| GPP_A11/ESPI_ALERT1# | I | eSPI Alert 1 : Alert signal from eSPI device to the PCH. 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. |
| GPP_A12/ESPI_ALERT2# | I | eSPI Alert 2: Alert signal from eSPI device to the PCH. 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. |
| GPP_A13/ESPI_ALERT3# | I | eSPI Alert 3: Alert signal from eSPI device to the PCH. 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. |