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U2739M-B

DAB One-Chip Channel- and Source Decoder

Description

The U2739M-B is an integrated circuit in advanced

CMOS technology for demodulation and decoding of a

DAB signal according to ETS 300 401. The channel

decoder part includes the main features OFDM

demodulation & decoding and time & frequency synchro-

nization algorithms, using the embedded OAK DSP core.

The source decoder consists of an audio and a data

decoder part. The audio source decoder supports

ISO MPEG 1,2 layer 2 and the data decoder offers

2 independent packet mode decoders.

Several standard interfaces, like I

2

C/L3, I

2

S, SPDIF or

RDI are implemented to offer a flexible utilization.

Moreover the U2739M-B includes a mechanism to

replace respectively extend certain software modules by

using a special boot mode (so-called USE). For example,

the time & frequency synchronization modules can be

replaced by down-loading the corresponding user

software algorithms to the OAK DSP core.

Electrostatic sensitive device.

Observe precautions for handling.

Block Diagram

RAM

SLI, WAGC

Channel

decoder

U2739M鈥揂

I2S

DAC

Tuner

ADC

Audio

decoder

SPDIF

ROM

Data

decoder

V24/RS232

HSSO

MC

interface

RDI

interface

MCU

SFCO

RDI

Figure 1. Block diagram

Ordering Information

Extended Type Number

U2739M-BFT

U2739M-BFC

CQFP144

Package

T鈥揚QFP鈥揋100

Tray

Tray

Remarks

Rev. A1, 22-May-01

1 (69)

next

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