Intel® 800 Series Chipset Family Platform Controller Hub (PCH)

Datasheet, Volume 1 of 2

ID Date Version Classification
833778 01/07/2025 Public
Document Table of Contents

Signal Description

Signal Name

Type

Description

GPP_​D09/SML0CLK

I/OD

System Management Link 0 Clock:

SMLink0 is used between PCH's LAN controller and the PHY.

External Pull-up resistor required.

GPP_​D10/SML0DATA

I/OD

System Management Link 0 Data:

SMLink0 is used between PCH's LAN controller and the PHY..

External Pull-up resistor required.

GPP_​C05/SML0ALERT#/USB-C_​GPP_​C05

I/OD

System Management 0 Alert:

SMLink0 is used between PCH's LAN controller and the PHY.

External Pull-up resistor required.

GPP_​D04/SML1CLK

I/OD

System Management Link 1 Clock: SMBus link to optional Embedded Controller or BMC. External Pull-up resistor required.

GPP_​D15/SML1DATA

I/OD

System Management Link 1 Data: SMBus link to optional Embedded Controller or BMC. External Pull-up resistor required.

GPP_​B21/SML1ALERT#/PCHHOT#

I/OD

System Management 1 Alert: Alert for the SMBus controller to optional Embedded Controller or BMC. A soft-strap determines the native function SML1ALERT# or PCHHOT# usage.

This is NOT the right Alert pin for USB-C* usage. SMLink4 should be used for USB-C* usage.

External Pull-up resistor is required on this pin.

GPP_​H09/SML2CLK/USB-C_​GPP_​H09

I/OD

System Management Link 2 Clock: SMBus link to external PHY.

External Pull-up resistor required.

GPP_​H10/SML2DATA/USB-C_​GPP_​H10

I/OD

System Management Link 2 Data

External Pull-up resistor required.

GPP_​H11/SML2ALERT#/USB-C_​GPP_​H11

I/OD

System Management 2 Alert: Alert for the SMBus controller to optional Embedded Controller or BMC.

External Pull-up resistor required.

GPP_​H12/SML3CLK/USB-C_​GPP_​H12

I/OD

System Management Link 3 Clock: SMBus link to external PHY.

External Pull-up resistor required.

GPP_​H13/SML3DATA/USB-C_​GPP_​H13

I/OD

System Management Link 3 Data

External Pull-up resistor required.

GPP_​H14/SML3ALERT#/USB-C_​GPP_​H14

I/OD

System Management 3 Alert: Alert for the SMBus controller to optional Embedded Controller or BMC.

External Pull-up resistor required.

GPP_​H15/SML4CLK/USB-C_​GPP_​H15

I/OD

System Management Link 4 Clock:

SMBus link to PD Controllers.

External Pull-up resistor required.

GPP_​H16/SML4DATA/USB-C_​GPP_​H16

I/OD

System Management Link 4 Data

SMBus link to PD Controllers.

External Pull-up resistor required.

GPP_​H17/SML4ALERT#/USB-C_​GPP_​H17

I/OD

System Management 4 Alert:

SMBus link to PD Controllers.

External Pull-up resistor required.

GPP_​C04/ISH_​UART0_​TXD/SML0BCLK/I2C2_​SCL/USB-C_​GPP_​C04 I/OD

System Management Link 0 B Clock

External Pull-up resistor required.

Note:Alternate interface from/to same SML0 controller

GPP_​C03/ISH_​UART0_​RXD/SML0BDATA/I2C2_​SDA/USB-C_​GPP_​C03 I/OD

System Management Link 0 B Data

External Pull-up resistor required.

Note:Alternate interface from/to same SML0 controller

GPP_​E21/ISH_​UART0_​CTS#/SML0BALERT# I/OD

System Management 0 Alert: Alert for the SMBus controller to optional Embedded Controller or BMC.

External Pull-up resistor required.

Note:Alternate interface from/to same SML0 controller

INTRUDER# I

Intruder Detect

SMI# OD System Management Interrupt (SMI) - Event indication to BMC (Server)
NMI# OD Non Maskable Interrupt (NMI)- Event indication to BMC (Server)