MOSA

MS6257

GAIN AND ATTENUATION VOLUME CONTROLLER IC

REV 1

15

www.mosanalog.com

Label 3: Input section

Please input stereo audio signal, as music or sine wave.

Label 4: Output section

Please connected to a post-power-amplifier, as stereo speaker.

Circuit

+

C5

+

C6

+

C14

10u

C12

104

R11 10k

+

C7

+

C1

10u

+

C8

+

C11

10u

+

C9

+

C10

C16

20pF

C17

20pF

+

C2

L1

C18

10uF

+

C3

S9

RESET

+

C15

10u

+

C4

C13

104

12M

P3.7

11

RST

1

P1.0

12

P3.0

2

P1.1

13

P3.1

3

P1.2

14

XTAL2

4

P1.3

15

XTAL1

5

P1.4

16

P3.2

6

P1.5

17

P3.3

7

P1.6

18

P3.4

8

P1.7

19

P3.5

9

Vcc

20

GND

10

U2

AT89C2051

DVCC

J1

AVDD

R1

100K

R2

R3

R4

R5

R6

R7

R8

R9

R10

RCA1

LIN4

RCA6

ROUT

RCA7

RIN1

RCA8

RIN2

RCA9

RIN3

RCA10

RIN4

RCA2

LIN3

RCA3

LIN2

RCA4

LIN1

RCA5

LOUT

S3

2CH+

S6

LCH+

S8

RCH+

S2

2CH-

S5

LCH-

S7

RCH-

S1

MUTE

S4

CH-SEL

A.O.

1

L-IN4

2

L-IN3

3

L-IN2

4

L-IN1

5

L-OUT

6

VSS

7

SDA

8

SCL

9

VDD

10

R-OUT

11

R-IN1

12

R-IN2

13

R-IN3

14

R-IN4

15

CAP

16

U1

MS6258

R12

103

J3

AO

OPEN : 88H

SHORT: 8CH