MS6821 datasheet(16/26 Pages) MOSA

16 / 26 page

MOSA

MS6821

4 Stereo inputs / 2W PA output integrated Audio DAC and Volume Control

REV 1.0

www.mosanalog.com

Input Selector and Input Gain

MSB

LSB

Function

L-ch, Input Gain and line Selection

R-ch, Input Gain and line Selection

Line 1 (L-ch or R-ch)

Line 2 (L-ch or R-ch)

Line 3 (L-ch or R-ch)

Line 4 (L-ch or R-ch)

0 dB

3 dB

6 dB

9 dB

12 dB

15 dB

18 dB

21 dB

Initial state: L-ch1, R-ch1, Input gain is 0dB.

Power Down Mode

MSB

LSB

Function

DAC

RPD

LPD PDPR

CAP

Power mode selection and power management

DAC is active mode

DAC is power down mode

R-ch PA output is active mode

R-ch PA output is power down mode

L-ch PA output is active mode

L-ch PA output is power down mode

Disable preparation for power off

Enable preparation for power off

Set the voltage of CAP to middle of supply voltage

Pull down CAP pin to ground

Initial state: All are the power down modes.

Enable the power down preparation before the chip will be shut down.

Attenuation

Mute

16-bit DAC

Mixer

Attenuation

Mute

Mixer

-1

DACPD

LPD

RPD

L-ch selector

& Gain

R-ch selector

& Gain

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