MEC1322 datasheet(145/456 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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 2014 - 2015 Microchip Technology Inc.

DS00001719D-page 145

MEC1322

11.0 8042 EMULATED KEYBOARD CONTROLLER

11.1

Introduction

The MEC1322 keyboard controller uses the EC to produce a superset of the features provided by the industry-standard

8042 keyboard controller. The 8042 Emulated Keyboard Controller is a Host/EC Message Interface with hardware

assists to emulate 8042 behavior and provide Legacy GATEA20 support.

11.2

References

There are no references for this block.

11.3

Interface

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

11.4

Signal Description

Note:

There is no VCC emulation in hardware for this interface.

FIGURE 11-1:

I/O DIAGRAM OF BLOCK

TABLE 11-1:

SIGNAL DESCRIPTION TABLE

Name

Direction

Description

KBRST

Output

Keyboard Reset, routed to pin

8042 Emulated Keyboard Controller

Signal Description

Clock Inputs

Interrupts

Resets

Host Interface

MEC1322 Datasheet(PDF) 145 Page - Microchip Technology