TDA7464
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH
SRS SURROUND SOUND AND VOICE CANCELLER
4 STEREO INPUTS
INPUT ATTENUATION CONTROL IN 0.5dB
STEP
TREBLE MIDDLE AND BASS CONTROL
VOICE CANCELLER IS AVAILABLE
STEREO SRS SURROUND SOUND WITH
CENTER & SPACE CONTROL IS AVAILABLE
THREE STANDARD SURROUND MODES
ARE AVAILABLE:
- MUSIC IN 4 DIFFERENT SELECTABLE
RESPONSES
- MOVIE AND SIMULATED IN 256
DIFFERENT SELECTABLE RESPONSES
2 SPEAKERS OUTPUTS
- INDEPENDENT ATTENUATORS IN 1dB
STEP FOR BALANCE FACILITY
- ZEROCROSSING ATTENUATION AVAILABLE
- INDEPENDENT MUTE FUNCTION
2 RECORD OUTPUTS
- INDEPENDENT ATTENUATORS IN 1dB
STEP FOR BALANCE FACILITY
- MUX AVAILABLE FORPROCESSES SIGNAL
SELECTION
- INDEPENDENT MUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SE-
RIAL BUS
DESCRIPTION
The TDA7464 is a volume tone (bass middle and
treble) balance (Left/Right) processors with stereo
SRS and voice canceller for quality audio applica-
tions in car radio, Hi-Fi, TV systems.
It reproduces SRS (Sound Retrieval System)
sound by external components and surround
sound by using phase shifters and a signal ma-
trix. The AC signal setting is obtained by resistor
networks and switches combined with operational
amplifiers according to the SRS laboratories
specification. Control of all the functions is ac-
complished by serial bus.
Thanks to the used BIPOLAR/CMOSTechnology,
Low Distortion, Low Noise and DC stepping are
obtained.
February 1998
ORDERING NUMBER: TDA7464
TQFP44
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VAR_L
NETW2
NETW1
HP1
LP1
HP2
BASS_LI
BASS_LO
BASSO_R
BASSO_L
VAR_R
BASS_RO
BASS_RI
MIDDLE_LO
MIDDLE_LI MIDDLE_RI
MIDDLE_RO
TREBLE_R
TREBLE_L
AGND
SDA SCL
LP PS1 PS2 PS3 V
S
PS4 CREF R_IN4 R_IN3 R_IN2 LPVC
L_IN4
RECOUT_L
RECOUT_R
R_OUT
DIG_GND
L_OUT
R_IN1
L_IN1
L_IN2
L_IN3
VREFOUT
D96AU483C
12 13 14 15 16
PIN CONNECTION
The Device incorporates the SRS
(Sound Retrieval System) under
licence fromSRS Labs, Inc.
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