Audio Switch

MSB

LSB

FUNCTION

0

1

0

D2

D1

S2

S1

S0

Audio Switch

1

1

1

1

0

0

1

1

0

1

0

1

Stereo 1

Stereo 2

Stereo 3

Stereo 4

0

1

0

1

DIG. OUT 1 = 0

DIG. OUT 1 = 1

DIG. OUT 2 = 0

DIG. OUT 2 = 1

Bass and Treble

0

0

1

1

1

1

0

1

C3

C3

C2

C2

C1

C1

C0

C0

Bass

Treble

0

0

0

0

0

0

0

0

1

1

1

1

1

1

1

1

0

0

0

0

1

1

1

1

1

1

1

1

0

0

0

0

0

0

1

1

0

0

1

1

1

1

0

0

1

1

0

0

0

1

0

1

0

1

0

1

1

0

1

0

1

0

1

0

-14

-12

-10

-8

-6

-4

-2

0

0

2

4

6

8

10

12

14

C3 = Sign

For example Bass at -10dB is obtained by the following 8 bit string:

01100 010

Status at Power on Reset

Volume = 78.75dB

Treble = Bass = +2dB

Spkrs Attenuators = Mute

Input = Stereo 1

Dig. OUT 1 = Dig. OUT 2 = 1

TDA7312

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