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
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