TDA7438 Datasheet, PDF (9/17 Pages) STMicroelectronics – THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

POWER ON RESET CONDITION
INPUT SELECTION
INPUT GAIN
VOLUME
BASS
MIDDLE
TREBLE
SPEAKER
IN2
28dB
MUTE
0dB
2dB
2dB
MUTE
TDA7438
DATA BYTES
Address = 88 HEX (ADDR:OPEN).
FUNCTION SELECTION: First byte (subaddress)
MSB
D7
D6
D5
D4
D3
D2
X
X
X
B
0
0
X
X
X
B
0
0
X
X
X
B
0
0
X
X
X
B
0
0
X
X
X
B
0
1
X
X
X
B
0
1
X
X
X
B
0
1
X
X
X
B
0
1
B = 1: INCREMENTAL BUS ACTIVE
B = 0: NO INCREMENTAL BUS
X = DON’T CARE
LSB
D1
D0
SUBADDRESS
0
0
INPUT SELECT
0
1
INPUT GAIN
1
0
VOLUME
1
1
BASS
0
0
MIDDLE
0
1
TREBLE
1
0
SPEAKER ATTENUATE ”R”
1
1
SPEAKER ATTENUATE ”L”
INPUT SELECTION
MSB
LSB
D7
D6
D5
D4
D3
D2
D1
D0
X
X
X
X
X
X
0
0
X
X
X
X
X
X
0
1
X
X
X
X
X
X
1
0
X
X
X
X
X
X
1
1
INPUT MULTIPLEXER
IN3
NOT ALLOWED
IN2
IN1
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