MOSA

MS6714

4 Stereo Inputs / 2 Channels Output Audio Processor

REV1.0

9

www.mosanalog.com

Interface Protocol

The format consists of the following

‧A START condition

‧A chip address byte including the MS6714 address. (7bits)

‧The 8

‧MS6714 must always acknowledge the end of each transmitted byte.

‧A data sequence (N-bytes + Acknowledge)

‧A STOP condition

SCL

SDA

1-7

8

9

1-7

8

9

9

8

1-7

S

P

ADDRESS

--

ACK

ACK

ACK

DATA

DATA

START

CONDITION

STOP

CONDITION

Address Code

The chip address of the MS6714 is 88H.

10

0

0

0

0

10

7 bits address

MS6714 address

W

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, the bass and the treble 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 L

1

1

1

B1

B0

A2

A1

A0

Speaker ATT R

0

1

0

G1

G0

S2

S1

S0

Audio Switch

0

1

1

0

C3

C2

C1

C0

Bass Control

0

1

1

1

C3

C2

C1

C0

Treble Control

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