Intel® Processor and Intel® Core™ i3 N-Series

Datasheet, Volume 1 of 2

ID 759603
Date 01/04/2023
Version 001
Document Table of Contents

TCO Modes

TCO Compatible Mode

In TCO Legacy/Compatible mode, only the host SMBus is used. The TCO Target is connected to the host SMBus internally by default. In this mode, the Intel® Converged Security Engine (Intel® CSE) SMBus controllers are not used and should be disabled by soft strap.

TCO Compatible Mode SMBus Configuration

The table below includes a list of events that will report messages to the network management console.

Event Transitions that Cause Messages

Event

Assertion?

Deassertion?

Comments

INTRUDER# pin

Yes

No

System must hung in S0 state

Watchdog Timer Expired

Yes

NA

System will enter to hung state

SMBALERT# pin

Yes

Yes

System must hung in S0 state

BATLOW#

Yes

Yes

System must hung in S0 state

CPU_​PWR_​FLR

Yes

No

System will enter to hung state

Advanced TCO Mode

The PCH supports the Advanced TCO mode in which SMLink0 and SMLink1 are used in addition to the host SMBus.

In this mode, the Intel® CSE SMBus controllers must be enabled by soft strap in the flash descriptor. Refer to the figure below for more details.

In advanced TCO mode, the TCO target can either be connected to the host SMBus or the SMLink0.

SMLink1 can be connected to an Embedded Controller (EC).

Advanced TCO Mode