TDA7434 Datasheet, PDF (7/10 Pages) STMicroelectronics – BASIC FUNCTION AUDIO PROCESSOR

TDA7434
Bass, Treble
MSB
LSB
D₇ D₆ D₅ D₄ D₃ D₂ D₁ D₀
D4
Input
Selector
Treble Steps
0 0 0 0 - 14dB
0 0 0 1 -12dB
0 0 1 0 -10dB
0 0 1 1 -8dB
0 1 0 0 -6dB
0 1 0 1 -4dB
0 1 1 0 -2dB
0 1 1 1 0dB
1 1 1 1 0dB
1 1 1 0 +2dB
1 1 0 1 +4dB
1 1 0 0 +6dB
1 0 1 1 +8dB
1 0 1 0 +10dB
1 0 0 1 +12dB
1 0 0 0 +14dB
0
0001
0
0000
1
0000
1
0001
1
0010
1
0011
1
0100
1
0101
1
0110
1
0111
1
1111
1
1110
1
1101
1
1100
1
1011
1
1010
1
1001
1
1000
0
1000
0
1001
Bass Steps
-18dB
-16dB
-14dB
-12dB
-10dB
-8dB
-6dB
-4dB
-2dB _normal
0dB _range
0dB
+2dB
±14dB
+4dB
+6dB
+8dB
+10dB
+12dB
+14dB
+16dB
+18dB
FUNCTION
For example 12dB Treble and -8dB Bass give the following DATA BYTE: 0 0 1 1 1 0 0 1
Speaker Attenuators
MSB
LSB
D₇
D₆
D₅
D₄
D₃
D₂
D₁
D₀
SPEAKER ATTENUATOR LF, LR, RF, RR
X
X
0
0
0
0
0
0 0dB
X
X
0
0
0
0
0
1 -1dB
:
:
X
X
0
1
1
0
0
0 -24dB
X
X
0
1
1
0
0
1 -25.5dB
X
X
0
1
1
0
1
0 -27dB
X
X
0
1
1
0
1
1 -28.5dB
X
X
0
1
1
1
0
0 -30dB
X
X
0
1
1
1
1
1 -32dB
X
X
0
1
1
1
1
0 -34.5dB
X
X
0
1
1
1
1
1 -37.5dB
X
X
1
X
X
X
X
X Speaker Mute
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