TDA7346 Datasheet, PDF (8/14 Pages) STMicroelectronics – DIGITAL CONTROLLED SURROUND SOUND MATRIX

TDA7346
INPUT ATTENUATION
MSB
LSB
0.3125 dB STEPS
I
A5
A4
A3
A2
A1
A0
0
0
0
0
0
0
0
0
1
-0.3125
0
0
1
0
-0.625
0
0
1
1
-0.9375
0
1
0
0
-1.25
0
1
0
1
-1.5625
0
1
1
0
-1.875
0
1
1
1
-2.1875
2.5 dB STEPS
0
0
0
0
0
0
0
0
1
-2.5
0
0
1
0
-5
0
0
1
1
-7.5
0
1
0
0
0
1
0
1
-10
-12.5
0
1
1
0
-15
0
1
1
1
-17.5
I = 0 Attenuation Input R
I = 1 Attenuation Input L
Example: to program an R input attenuation equal to -11.25 you have to send 00100100
MSB
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
1
M1
M0
EFFECT CONTROL (-6 / -21dB)
LSB
B3
B2
B1
B0
1
0
0
0
0
1
0
0
0
1
1
0
0
1
0
1
0
0
1
1
1
0
1
0
0
1
0
1
0
1
1
0
1
1
0
1
0
1
1
1
1
1
0
0
0
1
1
0
0
1
1
1
0
1
0
1
1
0
1
1
1
1
1
0
0
1
1
1
0
1
1
1
1
1
0
1
1
1
1
1
1dB STEPS
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
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