FULL SOFTWARE FLEXIBILITY WITH TWO

24X24 BIT DSP CORES

AM/FM PROCESSING

AUDIO-PROCESSING AND SOUND-PROC-

ESSING

HARDWARE RDS FILTER, DEMODULATOR

& DECODER

INTEGRATED CODEC

IIC AND SPI CONTROL INTERFACES

SPI DEDICATED TO DISPLAY MICRO

6 CHANNEL SERIAL AUDIO INTERFACE SAI

SPDIF RECEIVER WITH SAMPLE RATE

CONVERTER

EXTERNAL MEMORY INTERFACE

DOUBLE DEBUG INTERFACE

ON-CHIP PLL

5V-TOLERANT 3V I/O INTERFACE

MULTIFUNCTION GENERAL PURPOSE I/O PORTS

DESCRIPTION

The TDA7500 is an integrated circuit implement-

ing a fully digital, integrated and advanced solu-

tion to perform the signal processing in front of

the power amplifier and behind the AM/FM tuner

or any other audio sources. The chip integrates

two 43 MIPs DSP cores: one for stereo decoding,

noise blanking, weak signal processing and multi-

This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.

September 1999

®

dig. aud. in

8+3

DSP1

X Register

Ram 512

Y Register

Ram 512

Program

Ram 1024

Rom 256

4

DSP0

Grp & blk

sync., error

correction

4

4

RDS

2

DSP Orpheus Core

FM processing,

AM processing,

Traffic mem., Dolby,

X bus 0

X bus 1

Exchange

Interface

Ext. Memory

Interface

IIC / SPI

Program

Ram 5632

Rom 256

Y Register

Ram 512

X Register

8.55MHz

CLK in

Int

Reset

5

VDD

GND

5

uP control

RDS

128k (4M) x 8

DSP Orpheus Core

Audio processing,

Sound processing

XTAL Osc.,

PLL

RDS

Filter

Debug, Test Interface

SPI

Serial Audio

Interface

4

dig. aud. out

Mux

Audio Bus 6 ch.

Audio Bus Synch.

Main micro

Error corrected RDS blocks

alternatively:

RDS clk, dat, qual, ARI

SPDIF

Interface

Sample Rate

Converter

Demod.

Σ∆ Modulator

Σ∆ Modulator

SC Filter

SC Filter

SC Filter

SC Filter

SC Filter

SC Filter

Noise

Shaper

Noise

Shaper

Noise

Shaper

Oversampling

Filter

Oversampling

Filter

Oversampling

Filter

Σ∆ Modulator

Σ∆ Modulator

Decimation

Filter

Decimation

Filter

Voltage

Ref.

Codec

Ctl Reg.

Test I/F

6

signal/line out

6

supply

2

3

clkt, wst, clkr, wsr

Input Multiplexer,

Analog Level Adjust

analog audio in

2

3

4

2

3

1

CC

CD

tel,navi

AM/FM lev.

AM/FM mpx

RDS mpx

AM-IF

1

Analog Volume Control,

Line Driver

IIC

3

AM

Noise

Detector

VDD GND

32

2

CDC input

4

4

SPI

Display uP

Spectrum Analyser

Debug, Test Interface

(3 I/O's)

4

(3 I/O's)

RDS bit/blk Int.

Mute

Cref

MD input

1 stereo channel

2

CODEC-ref

VS

SigGnd RefOut

Output

select.

(4 I/O's)

(1 I/O)

(2 I/O's)

(4 I/O's)

2 channel analog bypass

Ram 512

including 12 GPIO• s

including 12 GPIO• s

Speech synth., etc...

DAC-ref

Test

CD input

17

Data, ctl

Address

(4 I/O's)

(2 I/O's)

(1 I/O)

BLOCK DIAGRAM

TQFP100 Power with Slug Down

TDA7500

DIGITAL AM/FM SIGNAL PROCESSOR

PRODUCT PREVIEW

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