1-34 Hardware Specifications and ConfigurationsAudio Interface 0Table 1-31. Audio InterfaceFeatures z Four channels stereo ADC support 16/20/24-bit PCM formatz All DAC/ ADC support independent 44.1k/ 48k/ 96k/ 192 kHzsample ratez All analog jack ports except MONO, BEEP-IN and HP-OUTare stereo input and output re-taskingz Supports analog PCBEEP input, and a digital BEEPgenerator is integratedz Headphone amplifier on port-I (HP-OUT) is designed to driveoutput without external DC blocking capacitorsz Software selectable 2.5V and 3.2V reference output formicrophone biasz Software selectable boost gain (+10/+20/+30dB) for analogmicrophone inputz Two jack detection pins: each supports detection of up to 4jacksz Supports two GPIO pinsz Supports EAPD (external amplifier power down) control forexternal amplifierz Supports anti-pop mode when analog power AVDD is on anddigital power is offz Support 1.5V~3.3V scalable I/O for HD Audio linkz 48-pin LQFP ‘Green’ packagez Jack detection function is supported when device is in powerdown mode (D3)Amplifier z Realtek ALC271X-VB3-GR embeddedItem SpecificationAudio Controller Realtek ALC271X-VB3-GRAudio onboard or optional On boardMono or Stereo StereoResolution Support 16/20/24bit PCMCompatibility HD audio InterfaceSampling rate Sample rate up to 192Khz resolution VSR (Variable SamplingRate)Item Specification
