7431 查看數據表（PDF） - STMicroelectronics

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7431

DIGITALLY CONTROLLED AUDIO PROCESSOR WITH SURROUND SOUND MATRIX AND VOICE CANCELLER

STMicroelectronics 

TDA7430 - TDA7431

DATA BYTES

Address = 80(HEX): ADDR open; 82 (HEX): need to connect supply

FUNCTION SELECTION:

The first byte (subaddress)

MSB

LSB

SUBADDRESS

D7

D6

D5

D4

D3

D2

D1

D0

B

X

X

X

0

0

0

0

INPUT ATTENUATION

B

X

X

X

0

0

0

1

SURROUND & OUT & EFFECT

CONTROL

B

X

X

X

0

0

1

0

PHASE RESISTOR

B

X

X

X

0

0

1

1

BASS & NATURAL BASE

B

X

X

X

0

1

0

0

MIDDLE & TREBLE

B

X

X

X

0

1

0

1

SPEAKER ATTENUATION ”L”

B

X

X

X

0

1

1

0

SPEAKER ATTENUATION ”R”

B

X

X

X

0

1

1

1

RECORD ATTENUATION ”L”

B

X

X

X

1

0

0

0

RECORD ATTENUATION”R”

B

X

X

X

1

0

0

1

INPUT MULTIPLEXER, VOICE

CANCELLER & REC OUT

B = 1 incremental bus; active

B = 0 no incremental bus;

X = indifferent 0,1

INPUT ATTENUATION SELECTION

MSB

LSB

INPUT ATTENUATION

D7

D6

D5

D4

D3

D2

D1

D0

0.5 dB STEPS

0

0

0

0

0

0

1

-0.5

0

1

0

-1

0

1

1

-1.5

1

0

0

-2

1

0

1

-2.5

1

1

0

-3

1

1

1

-3.5

0

0

0

4 dB STEPS

0

0

0

1

-4

0

1

0

-8

0

1

1

-12

1

0

0

-16

1

0

1

-20

1

1

0

-24

1

1

1

-28

INPUT ATTENUATION = 0 ∼ -31.5dB

D7

D6

D5

D4

D3

D2

D1

D0

REAR SWITCH

0

REARIN, REAROUT PIN

ACTIVE

1

NO REARIN, REAROUT PIN

11/21

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