Silan

Semiconductors

SC7313

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.1

2002.02.26

10

2. speaker attenuators

MSB

LSB

Function

1

0

0

B1

B0

A2

A1

A0

Speaker ATT LF

1

0

1

B1

B0

A2

A1

A0

Speaker ATT RF

1

1

0

B1

B0

A2

A1

A0

Speaker ATT LR

1

1

1

B1

B0

A2

A1

A0

Speaker ATT RR

000

0

001

-1.25

010

-2.5

011

-3.75

100

-5

101

-6.25

110

-7.5

111

-8.75

00

0

01

-10

10

-20

11

-30

11

111

MUTE

For example, attenuation of 25dB on speaker RF is given by: 10110100

4. Audio switch

MSB

LSB

Function

0

1

0

G1

G0

S2S1S0

Audio switch

0

0

Stereo 1

0

1

Stereo 2

1

0

Stereo 3

1

1

Stereo 4

0

Loudness ON

1

Loudness OFF

0

0

+11.25dB

0

1

+7.5dB

1

0

+3.75dB

1

1

0dB

For example, to select the stereo 2 input with a gain of +7.5dB Loudness ON the 8bit string is: 01001001

Note: Stereo4 is connected internally, but not available on pins.