TDA7440D Datasheet, PDF (9/17 Pages) STMicroelectronics – TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7440D
5.2 POWER ON RESET CONDITION
Table 6.
INPUT SELECTION
INPUT GAIN
VOLUME
BASS
TREBLE
SPEAKER
IN2
28dB
MUTE
0dB
2dB
MUTE
5.3 DATA BYTES
Address = 88 HEX (ADDR:OPEN).
Table 7. FUNCTION SELECTION: First byte (subaddress)
MSB
LSB
SUBADDRESS
D7
D6
D5
D4
D3
D2
D1
D0
X
X
X
B
0
0
0
0 INPUT SELECT
X
X
X
B
0
0
0
1 INPUT GAIN
X
X
X
B
0
0
1
0 VOLUME
X
X
X
B
0
0
1
1 BASS
X
X
X
B
0
1
0
0 NOT USED
X
X
X
B
0
1
0
1 TREBLE
X
X
X
B
0
1
1
0 SPEAKER ATTENUATE "R"
X
X
X
B
0
1
1
1 SPEAKER ATTENUATE "L"
B = 1: INCREMENTAL BUS ACTIVE
B = 0: NO INCREMENTAL BUS
X = DON’T CARE
In Incremental Bus Mode, the "not used" function must be addressed in any case. For example to refresh
"Volume = 0dB" and Speaker_R = -40dB", the following bytes must be sent:
Table 8.
SUBADDRESS
VOLUME DATA
BUS DATA
NOT USED DATA
TREBLE DATA
SPEAKER_R DATA
XXX10010
X0000000
XXXX1111
XXXX1111
XXXX1111
X0000010
Table 9. 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
IN4
IN3
IN2
IN1
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