MEC1322 datasheet(278/456 Pages) MICROCHIP

Part #	MEC1322

Description	Keyboard and Embedded Controller for Notebook PC

PDF	456 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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278 / 456 page

MEC1322

DS00001719D-page 278

 2014 - 2015 Microchip Technology Inc.

24.0 TACH

24.1

Introduction

This block monitors TACH output signals (or locked rotor signals) from various types of fans, and determines their

speed.

24.2

References

No references have been cited for this feature.

24.3

Terminology

There is no terminology defined for this section.

24.4

Interface

This block is designed to be accessed externally via the pin interface and internally via a registered host interface.

24.5

Signal Description

24.6

Host Interface

The registers defined for the TACH are accessible by the various hosts as indicated in Section 24.11, "EC-Only Regis-

ters".

FIGURE 24-1:

I/O DIAGRAM OF BLOCK

TABLE 24-1:

SIGNAL DESCRIPTION TABLE

Name

Direction

Description

TACH INPUT

Input

Tachometer signal from TACHx Pin.

Signal Description

TACH

Interrupts

Power, Clocks and Reset

Host Interface

MEC1322 Datasheet(PDF) 278 Page - Microchip Technology