MAS3529F datasheet(7/92 Pages) MICRONAS

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DATA SHEET

MAS 35x9F

Micronas

June 30, 2004; 6251-505-1DS

1.3. Application Overview

The following block diagram shows an example appli-

cation for the MAS 35x9F in a portable audio player

device. Besides a simple controller and the external

flash memories, all required components are inte-

grated in the MAS 35x9F. The MAS 35x9F supports

both speech and radio quality audio encoding, as well

as compressed-audio decoding tasks.

Fig. 1–1 depicts a portable power-optimized audio

application. The two embedded DC/DC converters of

the MAS 35x9F generate optimum power supply volt-

ages for the DSP core and also for state-of-the art

flash memories that typically require 2.7 to 3.3 V sup-

ply. The performance of the DC/DC converters

reaches efficiencies of up to 95%.

Fig. 1–1: Example of an application for the MAS 35x9F in a portable audio player device

MAS 35x9F

Portable Digital Music Player

A/D

Microphone

amplifier

D/A

Headphone

amplifier

Volume

optional

line in

optional

digital in

S/PDIF

serial

Crystal

Osc./PLL

DC/DC1

I2CDC/DC2

Audio

baseband

features

DSP Core

MP3

AAC

Optional

SC4

Downloads

Headphone

digital out

S/PDIF and serial

System clock

e.g. 2.2 V

e.g. 3.0 V

I2C

µC

Display

Keyboard

PC Connector

Battery

e.g. 1.0 V

Voltage

Monitor

G.729

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