MOSA

MS6334/6335

16bits Stereo Audio DAC integrated HP Driver with Volume Control

REV 5

12/20

www.mosanalog.com

OPERATION PROCEDURE

The sequence of operation: power on→ active → power down → active → power off. The basic flowcharts are as

follows:

Active mode

All Devices are active

Volume Control

volume down to mute

both 2 channels mute on

Power Off

Disconnect V

DD

V

Power Off

Power Turn On

Power On

V

Default Codes Inside The Chip

Volume control :00H

Power down : 7FH

Audio format : 80H

Default Status

The chip is in the power down

mode, all devices are not active

Volume Mute On

Active

DAC Mute Off

Code : 60H

Power up

Code : 6DH

Wait 1sec

Code : 61H

All Devices are active

Audio Format Selection

Right justified: 80H (default)

Volume Control

volume down to mute

both 2 channels mute on

Power Down

(Shut Down)

Volume Control

Default volume = mute

Volume up/down step by step

All the Digital Interface Signals

Pull Low

I2C pull low

Audio inputs pull low

(BCK, WS, DATA)

Power Off Preparation

code : 82H or 83H

wait 0.2 sec

Power Down

code : 6FH

All devices are not active except

CAPPD keep active

Power Down

code : 6FH

All devices are not active

except CAPPD keep active

Keep All the Digital Interface

Signals unchanged

All the Digital Interface Signals

Pull Low

I2C pull low

Audio inputs pull low

(BCK, WS, DATA)

V

Fig.6

Operational procedure