1997 Jul 02

2

Philips Semiconductors

Objective specification

MPEG2 audio decoder

SAA2503

FEATURES

• Single-chip MPEG2 multichannel audio decoder

• Decodes MPEG high quality audio:

– MPEG1 layer 2 (44.1 kHz)

– MPEG2 multichannel layer 2 (48 kHz)

– Supports pause frames

• Outputs 2 channels

– Quasi surround down-mixing for Left and Right Dolby

surround channel (Lt and Rt)

– Stereo down-mixing for stereo reproduction

– Stereo signal selection

– Single channel down-mixing

• Karaoke modes

• Linear PCM modes:

– Down-sampling from 96 to 48 kHz

– Pass 48 kHz signals

• IEC 958 output interface (IEC 1937 formatted)

• IEC 958 output simultaneously available while decoding

MPEG2

• Output flags for direct control

• Stand-alone operation possible (self-booting)

• No external DRAM or SRAM required

• On-chip PLL for internal clock generation

• 13.5 or 27 MHz master clock

• 100 pins plastic LQFP package

• 5 V power supply.

APPLICATIONS

This IC is mainly intended for use in Digital Versatile Disc

(DVD) players. However it may also be used in any

application that is able to accept an MPEG2 audio

bitstreams such as:

• Set top boxes

• Multimedia PCs

• Digital television

• Next generation audio equipment.

GENERAL DESCRIPTION

The SAA2503 incorporates all necessary functions, such

as MPEG2 multichannel audio decoding plus

down-mixing, MPEG1 layer 2 decoding, Linear PCM

(LPCM) processing all producing high quality audio.

Together with the serial audio interfaces and the IEC 958

transmitter this allows for the complete audio function of a

DVD player in a single chip.

ORDERING INFORMATION

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

SAA2503HT

LQFP100

plastic low profile quad flat package; 100 leads; body 14 x 14 x 1.4 mm

SOT407-1