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E-TDA7404D

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P35
TDA7404 I2C bus interface
25/35
Note 1: The attenuation is specified at high frequencies. Around the center frequency the value is different
depending on the programmed attenuation (see Section 4.4: Loudness).
Note 2: It is not recommended to use a gain more than 20 dB for system performance reason. In general, the
max. gain should be limited by software to the maximum value, which is needed for the system.
Table 9. Loudness
MSB LSB
Function
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
0
0
:
1
1
0
0
:
1
1
0
0
:
1
1
0
1
:
0
1
Attenuation
0 dB
-1 dB
:
-14 dB
-15 dB
0
0
0
1
1
0
1
0
1
Filter / Center Frequency
off (flat) 'D6 must be = 0'
400 Hz
800 Hz
2.4 kHz
0
1
Shape
Low boost
Low and high boost
0
1
Soft-step-Volume
off
on
Table 10. Volume
MSB LSB
Function
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
1
1
1
1
1
1
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
1
0
0
0
1
1
X
0
0
0
0
1
0
0
0
1
1
X
0
0
1
1
1
0
0
1
1
1
X
0
1
0
1
1
0
1
0
1
0
1
X
Gain/attenuation
not allow
not allow
+30.0 dB
+29.0 dB
:
+1.0 dB
0.0 dB
- 1.0 dB
- 2.0 dB
:
-78.0 dB
-79.0 dB
Mute
0
1
Diffin - mode
Single ended stereo
Differential Stereo
I2C bus interface TDA7404
26/35
Table 11. Treble programming
MSB LSB
Function
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
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
Treble Steps
15 dB
14 dB
13 dB
12 dB
11 dB
10 dB
9 dB
8 dB
7 dB
6 dB
5 dB
4 dB
3 dB
2 dB
1 dB
0 dB
0
1
Mode
Cut
Boost
X
X
X
X
0
0
1
1
0
1
0
1
Treble Center Frequency
10 kHz
12.5 kHz
15 kHz
17.5 kHz
TDA7404 I2C bus interface
27/35
Note 3: For more information please refer to Section 4.7: Bass.
Table 12. Bass programming
MSB LSB
Function
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
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
Bass steps
15 dB
14 dB
13 dB
12 dB
11 dB
10 dB
9 dB
8 dB
7 dB
6 dB
5 dB
4 dB
3 dB
2 dB
1 dB
0 dB
0
1
Mode
Cut
Boost
0
0
1
1
0
1
0
1
Quality Factor
1
1.25
1.5
2
0
1
DC - Mode
Off
On
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E-TDA7404D

Mfr. #:
Buy E-TDA7404D
Manufacturer:
STMicroelectronics
Description:
Audio DSPs CARRADIO SIGNAL PROCESSOR
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