1-34 Hardware Specifications and Configurations
Audio Interface 0
Table 1-31. Audio Interface
Features
Four channels stereo ADC support 16/20/24-bit PCM format
All DAC/ ADC support independent 44.1k/ 48k/ 96k/ 192 kHz
sample rate
All analog jack ports except MONO, BEEP-IN and HP-OUT
are stereo input and output re-tasking
Supports analog PCBEEP input, and a digital BEEP
generator is integrated
Headphone amplifier on port-I (HP-OUT) is designed to drive
output without external DC blocking capacitors
Software selectable 2.5V and 3.2V reference output for
microphone bias
Software selectable boost gain (+10/+20/+30dB) for analog
microphone input
Two jack detection pins: each supports detection of up to 4
jacks
Supports two GPIO pins
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
Support 1.5V~3.3V scalable I/O for HD Audio link
48-pin LQFP ‘Green’ package
Jack detection function is supported when device is in power
down mode (D3)
Amplifier
Realtek ALC271X-VB3-GR embedded
Item Specification
Audio Controller Realtek ALC271X-VB3-GR
Audio onboard or optional On board
Mono or Stereo Stereo
Resolution Support 16/20/24bit PCM
Compatibility HD audio Interface
Sampling rate Sample rate up to 192Khz resolution VSR (Variable Sampling
Rate)
Item Specification
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