MS6821 Datasheet, PDF (20/26 Pages) MOSA ELECTRONICS – 4 Stereo Inputs, 2W BTL Stereo Output 16-bit Stereo DAC and Volume Control

MOSA
For BTL mode only
Power On
MS6821
4 Stereo inputs / 2W PA output integrated Audio DAC and Volume Control
Activating
Power Down
(Shut Down)
Power Off
All the Digital Interface Signals
Pull Low
I2C pull low
Audio inputs pull low
(BCK, WS, DATA)
V_DD = GND
Power On
V_DD = Supply voltage
Setting Input Gain IsFixed
[ Input Gain ]
Code: Lch 100xxx00
Rch 101xxx00
Disable Power Down
[ Power Down Mode]
Code: 11000000 (C0h)
Wait 0.5 sec
Default Status
[Attenuation & Mute]
Mute on (max attenuation)
[ Input Selector & Input Gain ]
L-ch1, R-ch1
0dB
[ Power Down Mode]
All power down status
[ Output Mode & Mixer & Format ]
BTL mode
Inputs not mixed with DAC signal
RJF format
Mute Off And Volume Up/Down
Step By Step
[ Attenuation and Mute ]
Code: Lch 00xxxxxx
Rch 01xxxxxx
Volume Down To Mute
Input Channels Mute On
[ Attenuation and Mute ]
Code: Lch 00111111 (3Fh)
Rch 01111111 (7Fh)
Pull Down CAP Pin To Ground
[ Power Down Mode ]
Code: 11000001 (C1h)
Wait 0.1 sec
Power Down All The Devices
[ Power Down Mode ]
Code: 11011111 (DFh)
Keep All The Digital Interface
Signals Unchanged
Volume Down To Mute
Input Channels Mute On
[ Attenuation and Mute ]
Code: Lch 00111111 (3Fh)
Rch 01111111 (7Fh)
Pull Down CAP Pin To Ground
[ Power Down Mode ]
Code: 11000001 (C1h)
Wait 0.1 sec
Power Down All The Devices
[ Power Down Mode ]
Code: 11011111 (DFh)
All the Digital Interface Signals
Pull Low
I2C pull low
Audio inputs pull low
(BCK, WS, DATA)
Power Off
Disconnect V_DD
VDD will be fell down to 0V
REV 1.0
20
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