TDA7466
®
DIGITALLY CONTROLLED AUDIO PROCESSOR WITH
SRS SURROUND SOUND AND VOICE CANCELLER
The Device incorporates the SRS
WOW Technology under licence from SRS Labs, Inc.
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1 STEREO 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
2 SPEAKERS OUTPUTS
- INDEPENDENT ATTENUATORS IN 1dB
STEP FOR BALANCE FACILITY
- ZERO CROSSING ATTENUATION AVAILABLE
- AVAILABILITY OF LOUDSPEAKERS
EQUALIZATION FIXED BY EXTERNAL
COMPONENTS
- 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 SERIAL BUS
DESCRIPTION
The TDA7466 is a volume tone (bass middle and
treble) balance (Left/Right) processors with stereo
SRS and voice canceller for quality audio applications 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 matrix. 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-
September 2003
SDIP42
ORDERING NUMBER: TDA7466
PIN CONNECTION
VS
PS4
PS3
PS2
PS1
LP
LP1
HP1
HP2
VAR_L
BASSO_L
VAR_R
BASSO_R
BASS_LO
BASS_LI
BASS_RO
BASS_RI
MIDDLE_LO
MIDDLE_LI
MIDDLE_RO
MIDDLE_RI
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
CREF
NBRO
NBRIN
LPVC
R_IN
VREFOUT
L_IN
NBLIN
NBLO
NETW2
NETW1
RECOUT_L
RECOUT_R
L_OUT
R_OUT
DIG_GND
SCL
SDA
AGND
TREBLE_L
TREBLE_R
D96AU445A
complished by serial bus.
Thanks to the used BIPOLAR/CMOS Technology,
Low Distortion, Low Noise and DC stepping are
obtained.
1/21
100K
L-IN
R-IN
0.22µF
0.22µF
38
36
50K
50K
31.5dB
control
100nF
LPVC
39
LPF
-
+
1
VS
RLP1 RHP1
9
7
31.5dB control
8
HP1
24
+
+
VOICE
ON
42
SUPPLY
+
-
R6
R5
HP2
22µF
37
VREF
VREFOUT
LP1
AGND
+
+
100K
+
-
+
-
MIX SW
L-R
32.4K
4.42K
0.47µF
130K
0.47µF
1K
33
CENTER
NETW2
32
1.5K
OFF
MOVIE/
SIM
PS3
400Hz
RPS3
3
NETW1
STEREO
SRS
EFFECT
CONTROL
MUSIC
PS2
4KHz
RPS2
4
PS3
6
LPF
9KHz
5
PS2
22nF
LP
1.2nF
MOVIE/
MUSIC
SIM
PS1
90Hz
RPS1
PS1
4.7nF
2
47.5K
3.74K
SPACE
21
5.6nF
4.7nF
18
2.7K
18nF
22nF
REAR
3BAND
FIX
5.6K
100nF
REAR
3BAND
BASS-RO
100nF
RB
16
SURR
FIX
BASSO-R
79dB CONTROL
MUTE
REC
ATT
MUTE
REC
ATT
11
BASSO-L
79dB CONTROL
I2C BUS DECODER + LATCHES
BASS
17
RB
14
SURR
BASS
15
BASS-LO
100nF
BASS-LI
5.6K
22nF 100nF
RM
20
MIDDLE
TREBLE
22
MIDDLE
TREBLE-R
FIX
19
RM
2.7K
18nF
TREBLE
23
TREBLE-L
5.6nF
SURR
SURR
MIXING
AMP
MIXING
AMP
SRS
FIX
PS4
400Hz
RPS4
PS4
22nF
SRS
100nF
MIDDLE-LO
MIDDLE-RO
MIDDLE-LI
MIDDLE-RI
680nF
BASS-RI
2.2µF
13
10
2.2µF
NB-RA
VAR-R
12
30K
VAR
FIX
FIX
VAR
30K
35
VAR-L
NB-LA
NB2
NB3
NBRIN
40
-
+
34
NBLIN
-
2/21
+
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5.6nF
NB1
41
NB4
NB-RB
NBRO
MUTE
30
28
27
25
26
29
31
RECOUT-R
R-OUT
DIG_GND
SDA
SCL
L-OUT
RECOUT-L
D96AU446B
SPKR
ATT
79dB CONTROL
MUTE
SPKR
ATT
79dB CONTROL
NBLO
NB-LB
TDA7466
BLOCK DIAGRAM
CREF
TDA7466
THERMAL DATA
Symbol
Rth j-pins
Description
Thermal Resistance Junction-pins
Value
Unit
85
°C/W
Max.
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
VS
Tamb
Operating Supply Voltage
Tstg
Storage Temperature Range
Value
11
Unit
V
-10 to 85
°C
-55 to +150
°C
Operating Ambient Temperature
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QUICK REFERENCE DATA
Symbol
Min.
Typ.
Max.
Unit
VS
VCL
Supply Voltage
Parameter
7
9
10.2
V
Max. input signal handling
2
THD
Total Harmonic Distortion V = 1Vrms f = 1KHz
0.01
0.1
%
S/N
SC
Signal to Noise Ratio V out = 1Vrms (mode = OFF)
Channel Separation f = 1KHz
Input Attenuation Control (0.5dB)
106
90
-31.5
0
dB
dB
dB
-14
+14
dB
Middle Control (2db step)
Bass Control (2dB step)
-14
-14
+14
+14
dB
dB
Balance Control 1dB step (LCH, RCH)
Mute Attenuation
-79
0
dB
dB
Treble Control
(2db step)
Vrms
100
ELECTRICAL CHARACTERISTICS (refer to the test circuit Tamb = 25°C, VS = 9V, RL = 10KΩ,
Vin = 1Vrms; RG = 600Ω, all controls flat (G = 0dB), Effect Ctrl = -6dB, MODE = OFF; f = 1KHz
unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
7
9
25
10.2
V
mA
60
80
37.5
2
50
2.5
1
SUPPLY
VS
IS
Supply Voltage
Supply Current
SVR
Ripple Rejection
LCH / RCH out, Mode = OFF
dB
INPUT STAGE
RIN
VCL
Input Resistance
Clipping Level
THD = 0.3%
62.5
KΩ
Vrms
ARANGE
AVMIN
Attenuation Range
Min. Attenuation
-1
31.5
0
AVMAX
Max. Attenuation
31
31.5
32
dB
ASTEP
VDC
AVO1
Step Resolution
DC Steps
Voice Canceller Output 1
-1
-3
0.5
0
1
3
dB
mV
5
6
7
dB
AVO2
Voice Canceller Output 2
-1
0
1
dB
Adjacent att. step
LIN = RIN, RIN = ON,
Vmix = 0V FIX, 0dB attenuation
LIN = RIN = 0V Vmix = 1Vrms FIX,
0dB attenuation
dB
dB
3/21
TDA7466
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
5
6
7
dB
24
32
40
KΩ
+12.0
+14.0
+16.0
dB
1
33
2
44
3
55
dB
KΩ
+12.0
+14.0
+16.0
dB
SUPPLY
AVO3
Voice Canceller Output 3
RLPV
Low Pass Filter Resistance
LIN = -RIN, Vmix = 0V FIX,
0dB attenuation
BASS CONTROL
Gb
BSTEP
RB
Control Range
Max. Boost/cut
Step Resolution
Internal Feedback Resistance
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MIDDLE CONTROL
Gm
MSTEP
RM
Control Range
Max. Boost/cut
Step Resolution
Internal Feedback Resistance
1
2
3
dB
18.75
25
31.25
KΩ
+13.0
1
+14.0
2
+15.0
3
dB
dB
TREBLE CONTROL
Gt
TSTEP
Control Range
Step Resolution
Max. Boost/cut
STANDARD SURROUND SOUND MATRIX
TEST CONDITION (Phase Resistor Selection D0=0, D1=1, D2=0. D3=1, D4=0, D5=1, D6=0, D7=1
Symbol
GOFF
Parameter
In-phase Gain (OFF)
Test Condition
Mode OFF, Input signal of
1kHz, 1.4 Vp-p, Rin → Rout
Lin → Lout
Min.
-1
Typ.
0
Max.
1
Unit
dB
DGOFF
LR In-phase Gain Difference
(OFF)
Mode OFF, Input signal of
1kHz, 1.4 Vp-p
Rin → Rout, Lin → Lout
-1
0
1
dB
GMOV
In-phase Gain (Movie)
Movie mode, Effect Ctrl = -6dB
Input signal of 1kHz, 1.4 Vp-p
Rin → Rout, Lin → Lout
8
dB
DGMOV
LR In-phase Gain Difference
(Movie)
Movie mode, Effect Ctrl = -6dB
Input signal of 1kHz, 1.4 Vp-p
(Rin → Rout) – (Lin → Lout)
0
dB
GMUS
In-phase Gain (Music)
Music mode, Effect Ctrl = -6dB
Input signal of 1kHz, 1.4 Vp-p
(Rin → Rout), (Lin → Lout)
7
dB
DGMUS
LR In-phase Gain Difference
(Music)
0
dB
LMON1
Simulated L Output 1
Music mode, Effect Ctrl = -6dB
Input signal of 1kHz, 1.4 Vp-p
(Rin → Rout) - (Lin → Lout)
Simulated Mode, Effect Ctrl = -6dB
Input signal of 250Hz,
1.4 Vp-p, Rin and Lin → Lout
4.5
dB
LMON2
Simulated L Output 2
Simulated Mode, Effect Ctrl = -6dB
Input signal of 1kHz,
1.4 Vp-p, Rin and Lin → Lout
– 4.0
dB
LMON3
Simulated L Output 3
Simulated Mode, Effect Ctrl = 6dB
Input signal of 3.6kHz,
1.4 Vp-p, Rin and Lin → Lout
7.0
dB
4/21
TDA7466
ELECTRICAL CHARACTERISTICS (continued)
Symbol
RMON1
Parameter
Simulated R Output 1
RMON2
Simulated R Output 2
RMON3
Simulated R Output 3
RLP1
RHPI
RLPF
Test Condition
Simulated Mode, Effect Ctrl = -6dB
Input signal of 250Hz,
1.4 Vp-p, Rin and Lin →Rout
Simulated Mode, Effect Ctrl = -6dB
Input signal of 1kHz,
1.4 Vp-p, Rin and Lin →Rout
Simulated Mode, Effect Ctrl = -6dB
Input signal of 3.6kHz,
1.4 Vp-p, Rin and Lin → Rout
Low Pass Filter Resistance
High Pass Filter Resistance
LP Pin Impedance
Min.
7.5
45
7.5
Typ.
– 4.5
Max.
Unit
dB
3.8
dB
– 20
dB
10
60
10
12.5
75
12.5
KΩ
KΩ
KΩ
-6
dB
dB
14.8
17.6
22.4
46.6
7
8.5
10.5
22.9
15.1
18.1
22.6
48.9
15.1
18.1
22.6
48.9
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
KΩ
0
dB
dB
0
dB
dB
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STANDARD SURROUND SOUND EFFECT CONTROL
CRANGE
SSTEP
Control Range
Step Resolution
- 21
1
SURROUND SOUND MATRIX PHASE
RPS10
RPS11
RPS12
RPS13
RPS20
RPS21
RPS22
RPS23
RPS30
RPS31
RPS32
RPS33
RPS40
RPS41
RPS42
RPS43
Phase Shifter 1: D1 = 0, D0 = 0
Phase Shifter 1: D1 = 0, D0 = 1
Phase Shifter 1: D1 = 1, D0 = 0
Phase Shifter 1: D1 = 1, D0 = 1
Phase Shifter 2: D3 = 0, D2 = 0
Phase Shifter 2: D3 = 0, D2 = 1
Phase Shifter 2: D3 = 1, D2 = 0
Phase Shifter 2: D3 = 1, D2 = 1
Phase Shifter 3: D5 = 0, D4 = 0
Phase Shifter 3: D5 = 0, D4 = 1
Phase Shifter 3: D5 = 1, D4 = 0
Phase Shifter 3: D5 = 1, D4 = 1
Phase Shifter 4: D7 = 0, D6 = 0
Phase Shifter 4: D7 = 0, D6 = 1
Phase Shifter 4: D7 = 1, D6 = 0
Phase Shifter 4: D7 = 1, D6 = 1
8.8
10.6
13.4
28
4.2
5.1
6.3
13.7
9
10.9
13.6
29.3
9
10.9
13.6
29.3
11.8
14.1
17.9
37.3
5.6
6.8
8.4
18.3
12.1
14.5
18.1
39.1
12.1
14.5
18.1
39.1
SRS SURROUND SOUND MATRIX
CENTER
StepC
SRS Control Range
Center Step Resolution
SPACE
StepS
SRS Space Control Range
Space Step Resolution
PERSP1
Perspective 1
PERSP2
Perspective 2
L+R
L+ R SRS Curve
-31
1
-31
1
Input Signal of 125Hz
SPACE = 0dB, CENTER = MUTE
Rin = GND; Lin → ROUT
Input Signal of 2.15KHz
SPACE = 0dB, CENTER = MUTE
Rin = GND; Lin → ROUT
SPACE = MUTE, CENTER
=0dB
Rin = GND; Lin → ROUT
12
dB
0
dB
-8.5
dB
5/21
TDA7466
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
SPEAKER & RECORD ATTENUATORS
Crange
Control Range
SSTEP
EA
Step Resolution
VDC
79
Attenuation set error
Av = 0 to -20dB
DC Steps
Av = -20 to -79dB
Adjacent att. steps
AMUTE
Output Mute Condition
RVAR
Input Impedance
dB
0.5
1
1.5
dB
-1.5
0
1.5
dB
-3
-3
0
0
2
3
dB
mV
70
100
22.5
30
dB
37.5
KΩ
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SPEAKER ATTENUATORS
VTH
Zero CrossingThreshold
D7 = 0
VS
+ 20
2
mV
4
5
30
µVrms
µVrms
µVrms
AUDIO OUTPUTS
NO(OFF)
Output Noise (OFF)
NO(MOV)
Output Noise (Movie) Standard
Surround Sound
Output Mute, Flat
BW = 20Hz to 20KHz
Mode =Movie ,
BW = 20Hz to 20KHz
NO(MUS)
Output Noise (Music) Standard
Surround Sound
Mode = Music ,
BW = 20Hz to 20KHz,
30
µVrms
NO(SIM)
Output Noise (Simulated)
Standard Surround Sound
Mode = Simulated,
BW = 20Hz to 20KHz
30
µVrms
NO(SRS)
Output Noise (SRS)
Surround Sound
BW = 20Hz to 20KHz
50
µVrms
Distorsion
Av = 0 ; Vin = 1Vrms
d
SC
VOCL
Channel Separation
ROUT
VOUT
Output Resistance
DC Voltage Level
Clipping Level
d = 0.3%
0.01
70
90
2
2.5
10
30
3.8
0.1
%
dB
Vrms
50
Ω
V
1
V
V
+5
µA
0.4
V
BUS INPUTS
6/21
VIL
VIH
Input Low Voltage
Input High Voltage
3
IIN
Input Current
-5
VO
Output Voltage SDA
Acknowledge
IO = 1.6mA
TDA7466
I2C BUS INTERFACE
Data transmission from microprocessor to the
TDA7466 and viceversa takes place through the
2 wires I2C BUS interface, consisting of the two
lines SDA and SCL (pull-up resistors to positive
supply voltage must be connected).
Data Validity
As shown in fig. 3, the data on the SDA line must
be stable during the high period of the clock. The
HIGH and LOW state of the data line can only
change when the clock signal on the SCL line is
LOW.
knowledge bit. The MSB is transferred first.
Acknowledge
The master (µP) puts a resistive HIGH level on the
SDA line during the acknowledge clock pulse (see
fig. 5). The peripheral (audioprocessor) that acknowledges has to pull-down (LOW) the SDA line
during this clock pulse.
The audioprocessor which has been addressed
has to generate an acknowledge after the reception of each byte, otherwise the SDA line remains
at the HIGH level during the ninth clock pulse
time. In this case the master transmitter can generate the STOP information in order to abort the
transfer.
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Start and Stop Conditions
As shown in fig.4 a start condition is a HIGH to
LOW transition of the SDA line while SCL is
HIGH. The stop condition is a LOW to HIGH transition of the SDA line while SCL is HIGH.
Byte Format
Every byte transferred on the SDA line must contain 8 bits. Each byte must be followed by an ac-
Transmission without Acknowledge
Avoiding to detect the acknowledge of the audioprocessor, the µP can use a simpler transmission:
simply it waits one clock without checking the
slave acknowledging, and sends the new data.
This approach of course is less protected from
misworking.
Figure 3: Data Validity on the I2CBUS
Figure 4: Timing Diagram of I2CBUS
Figure 5: Acknowledge on the I2CBUS
7/21
TDA7466
address
A subaddress bytes
A sequence of data (N byte + achnowledge)
A stop condition (P)
SOFTWARE SPECIFICATION
Interface Protocol
The interface protocol comprises:
A start condition (S)
A chip address byte, containing the TDA7466
SUBADDRESS
CHIP ADDRESS
MSB
S
1
LSB
0
0
0
0
0
A
0
MSB
ACK
DATA 1 to DATA n
LSB
B
DATA
MSB
ACK
LSB
DATA
ACK
P
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D95AU226A
ACK = Achnowledge
S = Start
P = Stop
A = Address
B = Auto Increment
EXAMPLES
No Incremental Bus
The TDA7466 receives a start condition, the cor-
CHIP ADDRESS
SUBADDRESS
MSB
S
1
LSB
0
0
0
0
0
rect chip address, a subaddress with the MSB = 0
(no incremental bus), N-data (all these data concern the subaddress selected), a stop condition.
A
0
MSB
ACK
0
DATA
LSB
X
X
MSB
X D3 D2 D1 D0 ACK
LSB
DATA
ACK
P
D95AU306
Incremental Bus
The TDA7466 receives a start condition, the correct chip address, a subaddress with the MSB = 1
(incremental bus): now it is in a loop condition
with an autoincrease of the subaddress whereas
CHIP ADDRESS
SUBADDRESS
MSB
S
1
LSB
0
0
0
D95AU307
8/21
0
0
SUBADDRESS from "1XXX1010" to "1XXX1111"
of DATA are ignored.
The DATA 1 concerns thesubaddress sent, and
the DATA 2 concerns the subaddress sent plus
one in the loop etc. and, at the end, it receives the
stop condition.
A
0
MSB
ACK
1
DATA 1 to DATA n
LSB
X
X
X D3 D2 D1 D0 ACK
MSB
LSB
DATA
ACK
P
TDA7466
DATA BYTES (Address = 80(HEX)):
FUNCTION SELECTION:
The first byte (subaddress)
MSB
LSB
SUBADDRESS
D7
B
D6
X
D5
X
D4
X
D3
0
D2
0
D1
0
D0
0
B
X
X
X
0
0
0
1
B
X
X
X
0
0
1
0
SURROUND & OUT & EFFECT
CONTROL
PHASE RESISTOR
B
X
X
X
0
0
1
1
BASS & NATURAL BASE
INPUT ATTENUATION
)
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B
X
X
X
0
1
0
0
B
X
X
X
0
1
0
1
MIDDLE & TREBLE
SPEAKER ATTENUATION "L"
B
B
X
X
X
X
X
X
0
0
1
1
1
1
0
1
SPEAKER ATTENUATION "R"
RECORD ATTENUATION "L"
B
B
X
X
X
X
X
X
1
1
0
0
0
0
0
1
RECORD ATTENUATION"R"
INPUT MULTIPLEXER, VOICE
CANCELLER & REC OUT
B
X
X
X
1
0
1
0
SRS / SPACE ATTENUATION
B
X
X
X
1
0
1
1
SRS / CENTER ATTENUATION
B = 1 INCREMENTAL BUS; ACTIVE
B = 0 NO INCREMENTAL BUS;
X = DONT’CARE
INPUT ATTENUATION SELECTION
MSB
D7
D6
1
1
1
1
1
1
1
1
D5
D4
D3
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
D2
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
LSB
INPUT ATTENUATION
D0
0
1
0
1
0
1
0
1
0.5 dB STEPS
0
-0.5
-1
-1.5
-2
-2.5
-3
-3.5
4 dB STEPS
0
-4
-8
-12
-16
-20
-24
-28
INPUT ATTENUATION = 0 ∼ -31.5dB
9/21
TDA7466
STANDARD SURROUND SELECTION
MSB
D7
LSB
D6
D5
D4
D3
D2
D1
0
0
1
1
D0
0
1
0
1
0
1
SURROUND MODE
SIMULATED
MUSIC
OFF
MOVIE
OUT
VAR
FIX
EFFECT CONTROL
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
)
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0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
PHASE RESISTOR SELECTION
MSB
D7
LSB
D6
D5
0
0
1
1
0
0
1
1
10/21
0
1
0
1
D4
0
1
0
1
D3
D2
0
0
1
1
0
1
0
1
D1
0
0
1
1
D0
0
1
0
1
SURROUND PHASE
RESISTOR
PHASE SHIFT 1 (KΩ)
12
14
18
37
PHASE SHIFT 2 (KΩ)
6
7
8
18
PHASE SHIFT 3 (KΩ)
12
14
18
39
PHASE SHIFT 4 (KΩ)
12
14
18
39
TDA7466
BASS SELECTION
MSB
D7
D6
D5
D4
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
D2
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
D1
0
0
1
1
0
0
1
1
1
1
0
0
1
1
0
0
LSB
BASS
D0
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
2 dB STEPS
-14
-12
-10
-8
-6
-4
-2
0
0
2
4
6
8
10
12
14
NATURAL BASE
NBRIN, NBRO, NBLIN,
NBLO PIN ACTIVE
NO NBRIN, NBRO, NBLIN,
NBLO PIN
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0
1
When external components aren’t connected, the data from NATURAL BASE must put "OFF"
11/21
TDA7466
MIDDLE & TREBLE SELECTION
MSB
D7
D6
D5
D4
LSB
MIDDLE
D3
0
D2
0
D1
0
D0
0
2 dB STEPS
-14
0
0
0
1
-12
0
0
1
0
-10
0
0
1
1
-8
0
0
1
1
0
0
0
1
-6
-4
0
1
1
0
-2
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0
1
1
1
1
1
1
1
0
0
1
1
1
0
2
1
1
0
1
4
1
1
0
0
6
1
1
0
0
1
1
1
0
8
10
1
0
0
1
12
1
0
0
0
14
TREBLE
2 dB STEPS
0
0
0
0
0
0
0
1
-14
-12
0
0
0
0
0
1
1
1
0
0
1
0
-10
-8
-6
0
1
0
1
-4
0
0
1
1
1
1
0
1
-2
0
1
1
1
1
1
1
1
1
1
1
0
0
1
0
1
0
0
2
4
6
1
1
1
1
0
0
0
0
1
1
0
0
1
0
1
0
8
10
12
14
12/21
TDA7466
LEFT CHANNEL SPEAKER ATTENUATION SELECTION
MSB
D7
D6
D5
D4
D3
D2
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
LSB
SPEAKER/RECORD ATT
D0
0
1
0
1
0
1
0
1
1 dB STEPS
0
-1
-2
-3
-4
-5
-6
-7
8 dB STEPS
0
-8
-16
-24
-32
-40
-48
-56
-64
-72
MUTE
)
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0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
1
1
0
1
1
X
X
X
LEFT & RIGHT CHANNELS BOTH
MSB
D7
0
1
D6
D5
D4
D3
D2
D1
LSB
ZERO CROSS ATT. MODE
D0
1 dB STEPS
ON
OFF
X = DON’TCARE
SPEAKER/RECORD ATTENUATION = 0dB ∼ -79dB
13/21
TDA7466
RECORD AND RIGHT CHANNEL SPEAKER ATTENUATION SELECTION
MSB
D7
D6
D5
D4
D3
D2
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
LSB
SPEAKER/RECORD ATT
D0
0
1
0
1
0
1
0
1
1 dB STEPS
0
-1
-2
-3
-4
-5
-6
-7
8 dB STEPS
0
-8
-16
-24
-32
-40
-48
-56
-64
-72
MUTE
)
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0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
0
1
0
1
1
1
0
1
1
X
X
X
X = DON’T CARE
SPEAKER/RECORD ATTENUATION = 0dB ∼ -79dB
VOICE CANCELLER/INPUT/RECOUT L & R SELECTION
MSB
D7
1
1
LSB
D6
D5
1
1
1
1
1
1
1
1
14/21
0
0
1
1
0
1
0
1
D4
D3
D2
1
1
D1
1
1
0
0
1
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D0
0
1
VOICE CANCELLER
OFF
ON
REC OUT "L"
VAR 1 (3BAND)
VAR 2 (SURR)
VAR 3 (REAR)
FIX
REC OUT "R"
VAR 1(3BAND)
VAR 2 (SURR)
VAR 3 (REAR)
FIX
TDA7466
SRS SPACE CONTROL: ATTENUATION SELECTION
MSB
D7
D6
D5
D4
D3
D2
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
LSB
SPACE ATTENUATION
D0
0
1
0
1
0
1
0
1
1 dB STEPS
0
-1
-2
-3
-4
-5
-6
-7
8 dB STEPS
0
-8
-16
-24
MUTE
)
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0
0
0
0
0
0
1
1
0
1
0
1
1
X
X
X
X
X
X = DON’T CARE
SPEAKER/RECORD ATTENUATION = 0dB ∼ -31dB
SRS CENTER CONTROL: ATTENUATION SELECTION
MSB
D7
D6
0
1
0
1
D5
D4
D3
0
0
0
0
0
0
1
1
0
1
0
1
1
X
X
LSB
CENTER ATTENUATION
1 dB STEPS
0
-1
-2
-3
-4
-5
-6
-7
8 dB STEPS
0
-8
-16
-24
MUTE
D2
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
D0
0
1
0
1
0
1
0
1
X
X
X
SRS INPUT
NO SURROUND SIGNAL
SURROUND SIGNAL
SRS SWITCH
SRS ON
SRS OFF
X = DON’T CARE
SPACE ATTENUATION = 0dB ∼ -31dB
RECOMMENDED TO ATTENUATE -3dB IN INPUT ATTENUATION DURING "SRS OFF"
TO FULFILL SRS BYPASS MODE WHEN SRS FUNCTION IS USED
15/21
TDA7466
POWER ON RESET
SURROUND & OUT CONTROL+ EFFECT CONTROL
OFF + FIX + MAX ATTENUATION
SPEAKER/RECORD ATTENUATION L &R MODE
INPUT ATTENUATION + REAR SWITCH
MUTE + ZERO CROSS ATT.OFF
MAX ATTENUATION + ON
NATURAL BASE
VOICE CANCELLER
OFF
OFF
INPUT
IN1
MIX SWITCH
NO MIX PIN
SRS SURROUND
BASS & MIDDLE
OFF + MAX ATTENUATION
2dB
TREBLE
0dB
)
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PIN DESCRIPTION
PIN: L-OUT, R-OUT, RECOUT-L, RECOUT-R
PIN: HP1
VS
LP1
VS
10K
10Ω
GND
GND
20µA
60K
HP2
GND
D94AU198
GND
D96AU477
PIN: HP2
PIN: L-IN, R-IN
VS
VS
20µA
20µA
5.5K
60K
HP1
GND
5.5K
D94AU199
16/21
50K
GND
VREF
D94AU200
TDA7466
PIN: VAR-L, VAR-R,
PIN: CREF
VS
VS
20µA
20µA
20K
42K
SW
30K
20K
)
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GND Vref
D95AU336
D95AU227
GND
PIN: SCL, SDA
PIN: LP1
VS
20µA
20µA
10K
GND
GND
HP1
D94AU205
D94AU211
PIN: PS1, PS2, PS3, PS4, LP
PIN: NETW2
VS
VS
20µA
20µA
GND
GND
D96AU473
D95AU308
17/21
TDA7466
PIN: BASSO-L, BASSO-R, NETW1
PIN: BASS-LI, BASS-RI, MIDDLE-LI, MIDDLE-RI,
VS
VS
20µA
20µA
45K : Bass
or
25K : MIDDLE
GND
)
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BASS-LO
BASS-RO,MIDDLE-LO,MIDDLE-RO
GND
D95AU231A
D95AU230
PIN: BASS-LO, BASS-RO, MIDDLE-LO, MIDDLE-RO,
PIN: TREBLE-L, TREBLE-R
VS
VS
20µA
20µA
(*)
25K
GND
BASS-LI,BASS-RI,MIDDLE-LI,MIDDLE-RI
GND
D95AU232
(*) 45K : Bass
25K : MIDDLE
D95AU309
PIN: VOUT REF
PIN: NBLIN, NBRIN
VS
VS
20µA
20µA
GND
D95AU233A
10K
GND
18/21
GND
D95AU234
SW
TDA7466
PIN: NBLO, NBRO
VS
VREF
)
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GND
D95AU235A
19/21
TDA7466
mm
DIM.
MIN.
TYP.
A
inch
MAX.
MIN.
TYP.
5.08
OUTLINE AND
MECHANICAL DATA
MAX.
0.20
A1
0.51
0.020
A2
3.05
3.81
4.57
0.120
B
0.38
0.46
0.56
0.0149 0.0181 0.0220
B1
0.89
1.02
1.14
0.035
0.150
0.040
0.180
0.045
)
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0.23
0.25
0.38
0.0090 0.0098 0.0150
D
36.58
36.83
37.08
1.440
E
15.24
16.00
0.60
E1
12.70
14.48
0.50
13.72
1.450
1.460
0.629
0.540
e
1.778
0.070
e1
15.24
0.60
0.570
e2
18.54
0.730
e3
1.52
0.060
L
2.54
3.30
3.56
0.10
0.130
0.140
E
A2
A
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A1
E1
B
B1
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e2
D
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42
22
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0,38
Gage Plane
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21
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SDIP42
20/21
TDA7466
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