Audio Switch

MSB

LSB

FUNCTION

0

1

0

G1

G0

S2

S1

S0

Audio Switch

0

1

0

0

1

1

0

1

0

1

Stereo 1

Stereo 2 (MUTE) (*)

Stereo 3 (MUTE) (*)

Stereo 4 (MUTE) (*)

LOUDNESS ON

LOUDNESS OFF

0

0

1

1

0

1

0

1

+18.75dB

+12.5dB

+6.25dB

0dB

For example to select the stereo 1 input with a gain of +12.5dB, loudness on, the 8 bit string is:

01001 000

(*) Stereo 2, 3, 4 are connected internally but not available on pins.

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

TDA7314

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