MOSA

MS6720L

Low Cost 3 Stereo Inputs / 4-Channel Outputs Audio Processor

REV 2

8/12

www.mosanalog.com

Data Bytes Description

The default states of the chip as the power is on are: the volume is -78.75dB, the stereo 4 is selected, all the speakers are

mute and the gains of the input stage are 0dB.

MSB

LSB

Function

0

0

B2

B1

B0

A2

A1

A0

Volume Control

1

1

0

B1

B0

A2

A1

A0

Speaker ATT LR

1

1

1

B1

B0

A2

A1

A0

Speaker ATT RR

1

0

0

B1

B0

A2

A1

A0

Speaker ATT LF

1

0

1

B1

B0

A2

A1

A0

Speaker ATT RF

0

1

0

G1

G0

1

S1

S0

Audio Switch

Where Ax = 1.25dB/step; Bx = 10dB/step; Cx = 2dB/step; Gx = 3.75dB/step

Volume

MSB

LSB

Function

0

0

B2

B1

B0

A2

A1

A0

Volume 1.25 dB steps

0

0

0

0

0

0

1

-1.25

0

1

0

-2.5

0

1

1

-3.75

1

0

0

-5

1

0

1

-6.25

1

1

0

-7.5

1

1

1

-8.75

0

0

B2

B1

B0

A2

A1

A0

Volume 10dB steps

0

0

0

0

0

0

1

-10

0

1

0

-20

0

1

1

-30

1

0

0

-40

1

0

1

-50

1

1

0

-60

1

1

1

-70

The default volume is –78.75dB.