31Audio Codec and AmplifierItem SpecificationAudio Controller Audio ControllerFeatures Two stereo DAC support 16/20/24-bit PCM for two independentplayback (multiple streaming) Two stereo ADC supports 16/20/24-bit PCM format for twoindependent recording All DACs support independent 44.1k/48k/96k/192kHz samplerate All ADCs support independent 44.1k/48k/96k/192kHz samplerate Two independent SPDIF outputs support 16/20/24-bit formatand 44.1k/48k/88.2k/96k/192kHz rate Supports line level mono output Supports analog PCBEEP input, and features an integrateddigital BEEP generator Support two stereo digital microphone input for microphonearray AEC/BF application Supports legacy analog mixer architecture Supports two GPIO (General Purpose Input/Output) pins (pinsharing with digital microphone interface) Supports EAPD (External Amplifier Power Down) control forexternal amplifier Supports anti-pop mode when analog power AVDD is on anddigital power is off Supports 1.5V~3.3V scalable I/O for HD Audio link 48-pin LQFP 'Green' packageAmplifier Realtek ALC105Features Single-Ended stereo analog input BTL (Bridge-Tied Load) output provide up to 3W per channeldriving capability into 8 speaker load (5V power is supplied) No external output L-C filter required Speaker amplifier power supplies from 3.3V to 5V 10μA Shut Down current
