MS6865
MOSA
OPERATION PROCEDURE
3 Stereo inputs / 2W PA output with Volume Control
The sequence of operation: power on→ active → power down → active → power off. The basic flowcharts are as
follows:
For HP mode and HP/BTL mode
Power Down
(Shut Down)
Power On
Activating
Power Off
Volume Down To Mute
Input Channels Mute On
Volume Down To Mute
Input Channels Mute On
All the Digital Interface Signals
Pull Low
Setting Input Gain Is Fixed
[ Enable Input & Input Gain ]
Code: Lch 100xxx00
Rch 101xxx00
[ Attenuation and Mute ]
Code: Lch 00111111 (3Fh)
Rch 01111111 (7Fh)
[ Attenuation and Mute ]
Code: Lch 00111111 (3Fh)
Rch 01111111 (7Fh)
I2C pull low
VDD = GND
Power On
Disable Power Down
Power Down Preparation
Power Down Preparation
VDD = Supply voltage
[ Power Down Mode ]
Code: 11010011 (D2h)
Wait 0.5 sec
[ Power Down Mode ]
Code: 11010010 (D2h)
[ Disable Input & Gain = 0dB]
Code: Lch 10000011 (83h)
Rch 10100011 (a3h)
wait 7 sec
[ Power Down Mode ]
Code: 11010010 (D2h)
[ Disable Input & Gain = 0dB]
Code: Lch 10000011 (83h)
Rch 10100011 (a3h)
wait 7 sec
Default Status
[Attenuation & Mute]
Mute on (max attenuation)
PDPR = 0
[ Power Down Mode ]
Code: 11010000 (D0h)
Wait 0.5 sec
[ Input Selector & Input Gain ]
Lꢀch1, Rꢀch1
0dB
Power Down All The Devices
Pull Down CAP Pin To Ground
Power Down All The Devices
Only CAPPD Keep Activating
[ Power Down Mode ]
Code: 11011111 (DFh)
[ Power Down Mode ]
All power down status
[ Power Down Mode ]
Code: 11011110 (DEh)
Mute Off And Volume Up/Down
Step By Step
[ Output Mode & Mixer & Format ]
BTL mode
[ Attenuation and Mute ]
Code: Lch 00xxxxxx
Rch 01xxxxxx
All The Digital Interface Signals
Pull Low
Keep All The Digital Interface
Signals Unchanged
I2C pull low
Power Off
Disconnect VDD
VDD will be fell down to 0V
REV 2
14/22
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MOSA [ MOSA ELECTRONICS ]
