SUBADDRESS (receive mode)

MSB

LSB

FUNCTION

X

X

X

I

A3A2A1A0

0

0

0

0

0

0

0

0

0

0

0

1

1

1

0

0

1

1

0

0

1

0

1

0

1

0

1

0

Input selector

Volume

Bass, Treble

Speaker attenuator LF

Speaker attenuator LR

Speaker attenuator RF

Speaker attenuator RR

I = Auto increment

X = Not used

DATA BYTE SPECIFICATION

X = not relevant; set to ”1” during testing

Input Selector

MSB

LSB

FUNCTION

0

1

0

1

0

0

0

0

1

0

0

1

1

X

0

1

0

1

X

IN2

IN1

mono IN

no input selected

mute (low homic)

non-symmetrical bass cut (note 1)

symmetrical bass cut

extended bass range

standard bass range

±14dB

For example to select the IN2 input the Data Byte is: X X X X X 0 1 0.

An additional direct mute function is included in the Speaker Attenuators.

Note 1: Bass cut for very low frequencies.

MSB

LSB

VOLUME

0

0

0

0

0

0

0

0

0

0

0

1

1

1

0

0

1

1

0

0

1

0

1

0

1

0

1

0

+32dB

+16dB

0dB

-16dB

-32dB

-48dB

-64dB

0

0

0

0

0

0

0

0

1

0

0

0

1

0

0

1

1

0

1

0

1

0dB

-1dB

-2dB

-15dB

Note 2:

It is not recommended to use a gain more than 20dB for system performance reason. In general, the max. gain should be limited by

software to the maximum value, which is needed for the system.

TDA7433

6/10