MEC1322 datasheet(343/456 Pages) MICROCHIP

Part #	MEC1322

Description	Keyboard and Embedded Controller for Notebook PC

PDF	456 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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 2014 - 2015 Microchip Technology Inc.

DS00001719D-page 343

MEC1322

29.0 PS/2 INTERFACE

29.1

Introduction

There are four PS/2 Ports in the MEC1322 which are directly controlled by the EC. The hardware implementation elim-

inates the need to bit bang I/O ports to generate PS/2 traffic, however bit banging is available via the associated GPIO

pins.

29.2

References

No references have been cited for this feature.

29.3

Terminology

There is no terminology defined for this section.

29.4

Interface

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

29.5

Signal Description

FIGURE 29-1:

I/O DIAGRAM OF BLOCK

TABLE 29-1:

SIGNAL DESCRIPTION TABLE

Name

Direction

Description

PS2DAT

INPUT/

OUTPUT

Data from the PS/2 device

PS2CLK

INPUT/

OUTPUT

Clock from the PS/2 device

PS/2 Interface

Interrupts

Power, Clocks and Reset

Host Interface

Signal Description

MEC1322 Datasheet(PDF) 343 Page - Microchip Technology