TDA7465 Datasheet, PDF (1/20 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SRS SURROUND SOUND AND VOICE CANCELLER

TDA7465
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH
SRS SURROUND SOUND AND VOICE CANCELLER
The Device incorporates the SRS
(Sound Retrieval System) under
licence from SRS Labs, Inc.
1 STEREO INPUT AND 1 MIXER INPUT
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
REAR OUTPUT IS AVAILABLE TO DRIVE
EXTRA SURROUND SPEAKERS
2 SPEAKERS OUTPUTS
- INDEPENDENT ATTENUATORS IN 1dB
STEP FOR BALANCE FACILITY
- ZERO CROSSING ATTENUATION AVAILABLE
- INDEPENDENT MUTE FUNCTION
2 RECORD OUTPUTS
- INDEPENDENT ATTENUATORS IN 1dB
STEP FOR BALANCE FACILITY
- MUX AVAILABLE FOR PROCESSES SIGNAL
SELECTION
- INDEPENDENT MUTE FUNCTION
ALL FUNCTIONS PROGRAMMABLE VIA SE-
RIAL BUS
ADDRESS PIN AVAILABLE
DESCRIPTION
The TDA7465 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. An Extra Mix Input is available to
SDIP42
ORDERING NUMBER: TDA7465
PIN CONNECTION
V_S 1
PS4 2
PS3 3
PS2 4
PS1 5
LP 6
LP1 7
HP1 8
HP2 9
VAR_L 10
BASSO_L 11
VAR_R 12
BASSO_R 13
BASS_LO 14
BASS_LI 15
BASS_RO 16
BASS_RI 17
MIDDLE_LO 18
MIDDLE_LI 19
MIDDLE_RO 20
MIDDLE_RI 21
42 CREF
41 REAR_OUT
40 REAR_IN
39 LPVC
38 R_IN
37 VREFOUT
36 L_IN
35 MIX
34 NETW2
33 NETW1
32 RECOUT_L
31 RECOUT_R
30 L_OUT
29 R_OUT
28 DIG_GND
27 SCL
26 SDA
25 ADDR
24 AGND
23 TREBLE_L
22 TREBLE_R
D96AU479B
connect microphone for KARAOKE feature.
Control of all the functions is accomplished by se-
rial bus.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
May 1997
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