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sent to main chip MSD309PX to be processed by acoustic effect processor and volume controller to get
two parts of signals: the analog part of signal is sent to earphone power amplifier MAX9820 to be
amplified and then outputted to earphone jack; the digital part of signal I2S is sent to digital audio power
amplifier APA3160 to be processed by D/A convertor and power amplifier, then outputted to drive
speakers.
5、 HDMI input signal flow
HDMI video signal is inputted to main chip MSD309PX to be processed by video decoder, video
processor and zoom controller, then LVDS signal is outputted to drive display panel;
HDMI audio signal is sent to main chip MSD309PX to be processed by audio decoder, pre-amplifier,
acoustic effect processor and volume controller to get two parts of signals: the analog part of signal is sent
to earphone power amplifier MAX9820 to be amplified and then outputted to earphone jack; the digital
part of signal I2S is sent to digital audio power amplifier APA3160 to be processed by D/A convertor and
power amplifier, then outputted to drive speakers.
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