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PDF TDA7429S Data sheet ( Hoja de datos )
| Número de pieza | TDA7429S | |
| Descripción | DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX | |
| Fabricantes | ST Microelectronics | |
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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.
July 1999
LP1
HP1
HP2.
REAROUT
REARIN
VAR_L
BASSO_L
VAR_R
BASSO_R
BASS_LO
BASS_LI
44 43 42 41 40 39 38 37 36 35 34
1 33
2 32
3 31
4 30
5 29
6 28
7 27
8 26
9 25
10 24
11 23
12 13 14 15 16 17 18 19 20 21 22
MONITOR_R
MONITOR_L
L_IN1
L_IN2
L_IN3
L_IN4
AUXOUT_L
AUXOUT_R
L_OUT
R_OUT
DIG_GND
D96AU532
1/20
1 page  
BLOCK DIAGRAM (TDA7429S)
TDA7429S - TDA7429T
5/20
5 Page 
TDA7429S - TDA7429T
DATA BYTES
Address = 80(HEX)
FUNCTION SELECTION:
The first byte (subaddress)
MSB
LSB
SUBADDRESS
D7 D6 D5 D4 D3 D2 D1 D0
B X X X 0 0 0 0 INPUT ATTENUATION
B X X X 0 0 0 1 SURROUND & OUT & EFFECT
CONTROL
B X X X 0 0 1 0 PHASE RESISTOR
B X X X 0 0 1 1 BASS & NATURAL BASE
B X X X 0 1 0 0 MIDDLE & TREBLE
B X X X 0 1 0 1 SPEAKER ATTENUATION ”L”
B X X X 0 1 1 0 SPEAKER ATTENUATION ”R”
B X X X 0 1 1 1 AUX ATTENUATION ”L”
B X X X 1 0 0 0 AUX ATTENUATION”R”
B X X X 1 0 0 1 INPUT MULTIPLEXER, & AUX
OUT
B = 1 incremental bus; active
B = 0 no incremental bus;
X = indifferent 0,1
INPUT ATTENUATION SELECTION
MSB
LSB
INPUT ATTENUATION
D7 D6 D5 D4 D3 D2 D1 D0
X 000
X 001
X 010
X 011
X 100
X 101
X 110
X 111
X 000
0.5 dB STEPS
0
-0.5
-1
-1.5
-2
-2.5
-3
-3.5
4 dB STEPS
0
X 001
X 010
X 011
X 100
X 101
-4
-8
-12
-16
-20
X 110
X 111
-24
-28
INPUT ATTENUATION = 0 ∼ -31.5dB
D7 D6 D5 D4 D3 D2 D1 D0
REAR SWITCH
X0
REARIN, REAROUT PIN
ACTIVE
X1
NO REARIN, REAROUT PIN
11/20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet TDA7429S.PDF ] | |
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