POWER ON RESET CONDITION

INPUT SELECTION

IN2

INPUT GAIN

28dB

VOLUME

MUTE

SPEAKER

MUTE

DATA BYTES

Address = 88 HEX (ADDR:OPEN).

FUNCTION SELECTION: First byte (subaddress)

MSB

LSB

SUBADDRESS

D7

D6

D5

D4

D3

D2

D1

D0

XXXB

0

0

0

0

INPUT SELECT

XXXB

0

0

0

1

INPUT GAIN

XXXB

0

0

1

0

VOLUME

XXXB

0

0

1

1

NOT USED

XXXB

0

1

0

0

NOT USED

XXXB

0

1

0

1

NOT USED

XXXB

0

1

1

0

SPEAKER ATTENUATE ”R”

XXXB

0

1

1

1

SPEAKER ATTENUATE ”L”

B = 1: INCREMENTAL BUS ACTIVE

B = 0: NO INCREMENTAL BUS

X = DON’T CARE

INPUT SELECTION

MSB

LSB

INPUT MULTIPLEXER

D7

D6

D5

D4

D3

D2

D1

D0

XXXX

XX

0

0

NOT ALLOWED

XXXX

XX

0

1

NOT ALLOWED

XXXX

XX

1

0

IN2

XXXX

XX

1

1

IN1

In Incremental Bus Mode, the three ”not used” functions must be addressed in any case. For example to

refresh ”Volume = 0dB” and Speaker_R = -40dB”, the following bytes must be sent:

SUBADDRESS

XXX10010

VOLUME DATA

X0000000

NOT USED 1 DATA

XXXX1111

NOT USED 2 DATA

XXXX1111

NOT USED 3 DATA

XXXX1111

SPEAKER_R DATA

X0000010

TDA7449L

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