Data Sheet

PRELIMINARY
VS1063a Datasheet
10 OPERATION
10.11.4 AD Mixer
Parameter Address Usage
playMode 0x1e09 bit 3: AD Mixer enable
adMixerGain 0x1e0d AD mixer attenuation in 3dB steps -3. . . -31
adMixerConfig 0x1e0e AD mixer config
AD Mixer allows to mix MIC or LINE inputs with any decoded audio format. Four modes are
provided: stereo, mono down-mix of left and right channels, left channel, right channel.
The mix gain can be set in 3 dB steps using . The mixing samplerate can be
24 kHz, 48 kHz, 96 kHz, or 192 kHz. The higher the rate, the better the quality, but also the
more processing power is required.
In practise 48 kHz is good enough quality for all applications (takes 1.25 MHz), using 96 kHz
and 192 kHz are only recommended if you use I2S with those rates.
The AD Mixer configuration must be set before AD Mixer enable bit is set in
. The gain control can be adjusted at any time.
AD Mixer and PCM Mixer can not be on simultaneously. AD Mixer overrides PCM Mixer.
Version: 0.42, 2011-11-24 69