MS6334/6335
MOSA
16-Bit Stereo Audio DAC integrated HP Driver with Volume Control
Audio format and power off
MSB
LSB
b0
Function
1
0
0
0
0
0
b1
Audio format selection and preparation for power off
Audio format and power off bits
b1=1, Enable preparation for power off
b1=0, Disable preparation for power off
b0=1, I2S format
b0=0, Right justified format (normal format)
Initial state: b0=b1=0. Power off : VDD down to 0V
I2C example
The audio format is selected I2S format. Audio format code = 81H.
The initial state is right justified format.
MSB
1
LSB
0
Data byte
Start
0
0
0
1
1
0
ACK
1
0
0
0
0
0
0
1
ACK
Stop
MS6335 address
I2S format
DAC active. Code = 7BH.
The initial state is enabled all power down mode when power on.
Stop
Start
Chip Address
ACK
0
1
1
1
1
0
1
1
ACK
DACPD = 0
HP active, OPAmp active, CAP to 1/2 VDD, DAC keep active. Code = 61H.
Set the voltage of CAP to middle of supply voltage, the charge time is approximately 1 second.
Stop
Start
Chip Address
ACK
0
1
1
0
0
0
0
1
ACK
CAPGD = 0
HPPD = 0
OPAmp = 0
DACPD = 0
DAC mute off. Code = 60H.
The chip entered active mode.
Stop
Stop
Start
Chip Address
ACK
0
1
1
0
0
0
0
0
1
ACK
ACK
DACM = 0
Set gain of 2 channel at 0dB. Volume control code = 1BH.
Start
Chip Address
ACK
0
0
0
1
1
1
0
2-ch, 0dB
Set attenuation of left channel at –22.5dB. Volume control code = 2CH.
Stop
Start
Chip Address
ACK
0
0
1
0
1
0
0
ACK
1
L-ch, -22.5dB
REV 1.0
10
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