MS6713
MOSA
3 Stereo Inputs / 4 Channels Output Audio Processor
Interface Protocol
The format consists of the following
‧A START condition
‧A chip address byte including the MS6713 address. (7bits)
‧The 8th bit of the byte must be “0”.(write=0, read=1)
‧MS6713 must always acknowledge the end of each transmitted byte.
‧A data sequence (N-bytes + Acknowledge)
‧A STOP condition
SDA
SCL
1-7
8
9
1-7
8
9
1-7
8
9
S
P
--
R / W
START
CONDITION
STOP
CONDITION
ADDRESS
ACK
DATA
ACK
DATA
ACK
Address Code
The chip address of the MS6713 is 88H.
1
0
0
0
1
0
0
0
7 bits address
MS6713 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. The stereo 4 is connected internally, but not
available on pins.
MSB
LSB
A0
A0
A0
A0
A0
S0
Function
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
1
B2
0
B1
B1
B1
B1
B1
G1
0
B0
B0
B0
B0
B0
G0
C3
C3
A2
A2
A2
A2
A2
S2
A1
A1
A1
A1
A1
S1
Volume Control
Speaker ATT LR
Speaker ATT RR
Speaker ATT LF
Speaker ATT RF
Audio Switch
1
0
1
0
1
C2
C2
C1
C1
C0
C0
Bass Control
1
1
Treble Control
Where Ax = 1.25dB/step; Bx = 10dB/step; Cx = 2dB/step; Gx = 3.75dB/step
REV1.0
9
www.mosanalog.com
MOSA [ MOSA ELECTRONICS ]
