W9986D

MPEG Audio Layer III Decoder

GENERAL DESCRIPTION

The W9986D is a highly integrated USB MPEG

audio decoder chip with Digital Voice Recorder

(DVR) function built-in. This MPEG Layer III audio

decoder is capable of decoding layer III compressed

streams, as specified in MPEG 1 and MPEG 2 ISO

standards. And it also has integrated many

peripheral controllers such that it can directly

interface to audio codec, flash memory, USB, etc, to

minimize PC board area and system cost.

FEATURES

Single-chip MPEG Audio Decoder with Voice

Recoder /Decoder

48 MIPS 16-bit DSP with internal OM and DM for

MPEG audio decoder and DVR function

48 MHz double-frequency W78C58 micro

controller with internal 64Kbytes program ROM

and 6 Kbytes data RAM

I2S and SSI audio codec serial interface

SmartMedia, CompactFlash and MMC flash

memory interface. Hardware for SmartMedia

ECC and MMC CRC generation

USB 1.1 full speed interface that support Control,

Bulk-In, Bulk-Out and Interrupt-In transfer by

hardware or 8051 software

24 GPIO for keypad and system control

MPEG 1/2/2.5 Layer3 Decoder

ISO/IEC 11172-3 MPEG 1 audio layer 3 decoder

ISO/IEC 13818-3.2 MPEG 2 audio layer 3

decoder

MPEG 2.5 lower sampling frequencies audio

decoder

Support all the sampling frequencies of 48, 44.1,

32, 27.4, 22.05, 16, 12, 11.025, and 8 KHz

Low Bit Rate DVR (Digital Voice Recorder)

5.3/6.3 Kbps bit rate voice recording

8KHz voice sampling frequency with 16-bit

resolution

Support Silence-Detection and

Comfort-Noise-generation

Digital Sound Control

Digital volume control and stereo channel mixer

Digital bass and treble control

Low power 2.5V (core) and 3.3V (I/O) Operation,

with 5V input tolerance

128-pin LQFP Package

APPLICATIONS

Following figure shows a typical portable player

using W9986D.

PC

W9986D

Single-Chip USB

MPEG Audio Decoder

Audio

Codec

MIC

LCD

USB

Program Memory

Flash Memory

SmartMedia/

CompactFlash

MultiMetiaCard

SPK

Keypad

Optional

8051/52 ICE or uC

Winbond Corporate Headquarters

Taipei Sales Office

Winbond Electronics North America Corp.

Winbond Electronics H.K. Ltd.

Tel: 886-3-5790666

Tel: 886-2-27190505

Tel: 1-408-943666

Tel: 852-27513100

Fax: 886-3-5796139

Fax: 886-2-27197502

Fax: 1-408-9436668

Fax: 852-27552064

Details are subject to change without notice. All trade marks are property of their respective holders.

Oct. 2001