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Audio Codec and Amplifier
Audio Interface
Item Specification
Audio Controller Audio codec: Realtek ALC272X-GR
Features
Two stereo DAC support 16/20/24-bit PCM for two
independent playback (multiple streaming)
Two stereo ADC supports 16/20/24-bit PCM format for two
independent recording
All DACs support independent 44.1k/48k/96k/192kHz sample
rate
All ADCs support independent 44.1k/48k/96k/192kHz sample
rate
Two independent SPDIF outputs support 16/20/24-bit format
and 44.1k/48k/88.2k/96k/192kHz rate
Supports line level mono output
Supports analog PCBEEP input, and features an integrated
digital BEEP generator
Support two stereo digital microphone input for microphone
array AEC/BF application
Supports legacy analog mixer architecture
Supports two GPIO (General Purpose Input/Output) pins (pin
sharing with digital microphone interface)
Supports EAPD (External Amplifier Power Down) control for
external amplifier
Supports anti-pop mode when analog power AVDD is on and
digital power is off
Supports 1.5V~3.3V scalable I/O for HD Audio link
48-pin LQFP 'Green' package
Amplifier TI TPA6017A2PWPR,
Features
4 step gain control
2-W/Ch Output Power Into 3-? Load From 5-V Supply
Fully Differential Input
Low Supply Current and Shutdown selection
Embedded de-pop circuit
Item Specification
Audio Controller Realtek ALC272X-GR
Audio onboard or optional On board
Mono or Stereo Stereo
Resolution Support 16/24bit PCM
Compatibility HD audio Interface;
Sampling rate Sample rate up to 192Khz resolution VSR (Variable Sampling
Rate)