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廬

TDA7429S

TDA7429T

DIGITALLY CONTROLLED AUDIO PROCESSOR

WITH SURROUND SOUND MATRIX

3 STEREO/4 STEREO INPUTS

INPUT ATTENUATION CONTROL IN 0.5dB

STEP

TREBLE MIDDLE AND BASS CONTROL

THREE SURROUND MODES ARE AVAIL-

ABLE:

- MUSIC: 4 SELECTABLE RESPONSES

- MOVIE AND SIMULATED:

256 SELECTABLE RESPONSES

FOUR SPEAKERS ATTENUATORS:

- 4 INDEPENDENT SPEAKERS CONTROL

IN 1dB STEPS FOR BALANCE FACILITY

- INDEPENDENT MUTE FUNCTION

ALL FUNCTIONS PROGRAMMABLE VIA SE-

RIAL BUS

DESCRIPTION

The TDA7429 is volume tone (bass middle and

treble) balance (Left/Right) processors for quality

audio applications in TV and Hi-Fi systems.

PIN CONNECTION (TQFP44)

SDIP42

TQFP44

ORDERING NUMBERS:

TDA7429S

TDA7429T

It reproduces surround sound by using program-

mable phase shifters and a signal matrix. Control

of all the functions is accomplished by serial bus.

The AC signal setting is obtained by resistor net-

works and switches combined with operational

amplifiers.

Thanks to the used BIPOLAR/CMOS Technology,

Low Distortion, Low Noise and DC stepping are

obtained.

R_IN4

R_IN3

R_IN2

35

44

LP1

HP1

HP2.

REAROUT

REARIN

VAR_L

BASSO_L

VAR_R

BASSO_R

BASS_LO

BASS_LI

1

2

3

4

5

6

7

8

9

10

11

12

BASS_RO

43

42

41 40

39

38

37

36

34

33

32

31

30

29

28

27

26

25

24

23

MONITOR_R

MONITOR_L

L_IN1

L_IN2

L_IN3

L_IN4

AUXOUT_L

AUXOUT_R

L_OUT

R_OUT

DIG_GND

13

BASS_RI

14

MIDDLE_LO

15 16

MIDDLE_RO

MIDDLE_LI

17

MIDDLE_RI

18

TREBLE_R

19

TREBLE_L

20

AGND

21

SDA

22

SCL

R_IN1

D96AU532

CREF

PS1

PS2

PS3

PS4

V

S

LP

July 1999

1/20

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