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Sound subsystem (model dependent), Power subsystem – Texas Instruments EXTENSA 570CD User Manual

Page 46

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Two I/O windows per socket

Programmable card access cycle timing

8- or 16-bit CPU interface

8- or 16-bit PCMCIA interface support

ATA disk interface support

Automatic flash memory timing support

Easy host interface using ISA I/O addresses 03E0h, 03E1h

Mixed-voltage (3.3V or 5V) operation

Dual-socket-interface, 208-pin QFP

4.2.8

Sound Subsystem (Model Dependent)

Some models of the Extensa 57x Series notebooks are equipped with a
16-bit stereo sound system including:

Built-in microphone and stereo speakers

Stereo line input (5-pin jack, DIP)

Stereo Line Output (5-pin jack, DIP)

External microphone input (5-pin jack, DIP)

Audio chipset

The sound subsystem is physically implemented on the IR/Sound Board.

4.2.9

Power Subsystem

The Power Subsystem consists of the following major parts:

Power Management (hardware and software components)

AC Adapter

Power Supply Board

Nickel Metal Hydride (NiMH) Battery Pack

Optional Secondary Battery Pack (Lithium Ion) if not using the Media
Bay for a floppy drive or CD-ROM Drive

4.2.9.1

Power Management

The notebook is equipped with a power management function that
minimizes battery usage for prolonged battery operation and automatically
recharges the batteries when the notebook is used with an AC adapter.

4-8 Theory of Operation