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TDA7440

5.2 POWER ON RESET CONDITION

Table 6.

5.3 DATA BYTES

Address = 88 HEX (ADDR:OPEN).

Table 7. FUNCTION SELECTION: First byte (subaddress)

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.

Table 9. INPUT SELECTION

INPUT SELECTION

IN2

INPUT GAIN

28dB

VOLUME

MUTE

BASS

0dB

TREBLE

2dB

SPEAKER

MUTE

MSB

LSB

SUBADDRESS

D7

D6

D5

D4

D3

D2

D1

D0

X

X

X

B

0

0

0

0

INPUT SELECT

XX

XB

0

0

0

1

INPUT GAIN

XX

XB

0

0

1

0

VOLUME

XX

XB

0

0

1

1

BASS

XX

XB

0

1

0

0

NOT USED

XX

XB

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"

SUBADDRESS

XXX10010

VOLUME DATA

X0000000

BUS DATA

XXXX1111

NOT USED DATA

XXXX1111

TREBLE DATA

XXXX1111

SPEAKER_R DATA

X0000010

MSB

LSB

INPUT MULTIPLEXER

D7

D6

D5

D4

D3

D2

D1

D0

XXXXXX

0

0

IN4

XXXXXX

0

1

IN3

XXXXXX

1

0

IN2

XXXXXX

1

1

IN1