TDA7464 Datasheet, PDF (14/21 Pages) STMicroelectronics – DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SRS SURROUND SOUND AND VOICE CANCELLER

TDA7464
RECORD AND RIGHT CHANNEL SPEAKER ATTENUATION SELECTION
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
X
1
1
X
X
X = DON’T CARE
SPEAKER/RECORD ATTENUATION = 0dB ∼ -79dB
SPEAKER/RECORD ATT
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
VOICE CANCELLER/INPUT/RECOUT L & R SELECTION
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
VOICE CANCELLER
1
0
OFF
1
1
ON
INPUT MULTIPLEXER
1
0
0
0
0
IN_2
1
0
1
0
1
IN_3
1
1
0
1
0
IN_4
1
1
1
1
1
IN_1
REC OUT ”L”
1
0
0
VAR 1 (3BAND)
1
0
1
VAR 2 (SURR)
1
1
0
VAR 3 (REAR)
1
1
1
FIX
REC OUT ”R”
1
0
0
VAR 1(3BAND)
1
0
1
VAR 2 (SURR)
1
1
0
VAR 3 (REAR)
1
1
1
FIX
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