DATA BYTE SPECIFICATION

MSB

LSB

FUNCTION

D7

D6

D5

D4

D3

D2

D1

D0

1000

DIFFERENTIAL

1001

STEREO 1

1010

STEREO 2

1011

STEREO 3

1100

STEREO 4

1101

MONO

X

X

X

X

0

X

X

X

DC CONNECT (1)

0

0

HALF-DIFF 0dB (*)

0

1

HALF-DIFF -6dB (*)

1

0

FULL-DIFF 0dB (**)

1

1

FULL-DIFF -6dB (**)

(*) Selected when using a 3 wires differential source (pins 5 and 13 shorted)

(**) Selected when using 4 wires differential source

(1) OUTR-INR (OUTL-INR) short circuited internally (no need external connection)

Input Selector

MSB

LSB

FUNCTION

D7

D6

D5

D4

D3

D2

D1

D0

LOUDNESS STEP

0

000

00

0dB

0

000

01

1dB

0

000

10

2dB

0

000

11

3dB

0

001

00

4dB

0

001

01

5dB

0

001

10

6dB

0

001

11

7dB

0

010

00

8dB

0

010

01

9dB

0

0

1

0

1

0

10dB

0

0

1

0

1

1

11dB

0

0

1

1

0

0

12dB

0

0

1

1

0

1

13dB

0

0

1

1

1

0

14dB

0

0

1

1

1

1

15dB

0

1

0

0

0

0

16dB

0

1

0

0

0

1

17dB

0

1

0

0

1

0

18dB

0

1

0

0

1

1

19dB

0

1

0

1

0

0

20dB

1

LOUDNESS OFF

FINE VOLUME

00

0dB

01

-0.25dB

10

-0.5dB

11

-0.75dB

Loudness

TDA7437

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