1. Overview
This guide describes how computers and other hosts interface to the Synaptics TouchPad.
The first section describes the TouchPad generally, including operating modes, features,
host interactions, and principles of operation, with many historical notes comparing older
versions of the Synaptics TouchPad with the present one, version 4.5. (See page 4.)
The Synaptics TouchPad family supports a variety of protocols for communicating with
the host computer. The next few sections describe the available protocols:
· The PS/2 protocol is the method that most portable computers use to interface with
keyboards and pointing devices. (See page 27.)
· The Serial protocol connects the pointing device to the host using a standard
RS-232 serial port. (See page 50.)
· The ADB protocol is used by Apple Macintosh family computers. (See page 64.)
