MOSA

MS6258

Gain And Attenuation Volume Controller IC

REV 1

10

www.mosanalog.com.tw

APPLICATION INFORMATION

Basic application example

MCU

SDA

8

9

SCL

V

DD

V

SS

Supply

2.7~5V

10

7

47uF

0.1uF

Stereo Signal 1

MS6258

L-IN1

R-IN1

5

12

10uF

10uF

L-IN2

R-IN2

4

13

10uF

10uF

L-IN3

R-IN3

3

14

10uF

10uF

L-IN4

R-IN4

2

15

10uF

10uF

Stereo Signal 2

Stereo Signal 3

Stereo Signal 4

10k

L-OUT

6

10uF

R-OUT

11

Power

Amplifier

10uF

10k

A.O

V

REF

10uF

Hi : Addr 10001000B

Lo: Addr 10001100B

16

1

Basic application flowchart

Volume Control

volume down to -79 dB

step by step

Enable Mute Function

mute on

Power off

V

Pop Noise Free

power off preparation

wait 0.5 sec

Procedure Of Power Off

Procedure Of Power On

Volume Control

volume up/down

step by step

Initial Conditions

function off (-79dB)

mute on

Pop Noise Free

wait 1 sec

Disable Mute Function

mute off

Power on

V

1. The initial condition is –79dB and mute on when power on.

2. In order to prevent pop noise when power on, please wait 1 sec to transmit I