MOSA
DEMO BOARD
MS6257
GAIN AND ATTENUATION VOLUME CONTROLLER IC
2
4
1
3
Label 1: Supply Voltage
The AVDD and DVDD should be the same supply voltage, the supply range is 2.7~5.5 VDC.
Label 2:
Control
Switch
2-CH+ :
The volume-up switch for stereo channel
The volume increase by +1dB as the switch is pressed once, the maximum value is up to +15dB.
The default value is 0dB on initial status.
L-channel and R-channel are active synchronic.
2-CH- :
The volume-down switch for stereo channel
The volume decrease by -1dB as the switch is pressed once, the minimum value is up to -79dB.
L-channel and R-channel are active synchronic.
MUTE :
Press the switch once to enter mute on or mute off.
The default status is mute off on initial status.
RESET :
Reset MCU controller, the system will be loaded default value.
Label 3: Input section
Please input stereo audio signal, as music or sine wave.
Label 4: Output section
Please connected to a post-power-amplifier, as stereo speaker.
REV 1
12
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