A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 171 / 812
1.13. Audio Codec
1.13.1. Overview
The embedded Audio Codec is a high-quality stereo audio codec with headphone amplifier.
It features:
On-chip 24-bit DAC for playback
On-chip 24-bit ADC for recorder
Support analog/ digital volume control
Support 48K and 44.1K sample family
Support 192K and 96K sample
Support FM/ Line-in/ Microphone recorder
Stereo headphone amplifier that can be operated in capless headphone mode
Support Virtual Ground to automatic change to True Ground to protect headphone amplifier and make
function work normal mode
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