Hardware Specifications and Configurations 1-26
Audio Codec and Amplifier
Audio Codec and Amplifier
Item Specification
Audio Controller Realtek ALC271X-VB6-CG
Features
• Meets WLP (Windows Logo Program) requirements for
Windows XP, Vista and Windows 7
• 98dB Signal-to-Noise Ratio (A-weighting) for DAC output
• 90dB Signal-to-Noise Ratio (A-weighting) for ADC input
• 4-channel DAC supports 16/20/24-bit PCM format for
independent two stereo channel or 2.1 audio playback
• 4-channel ADC supports 16/20/24-bit PCM format for
independent two stereo channel audio inputs
• All DACs supports 44.1k/48k/96k/192kHz sample rate
• All ADCs support 44.1k/48k/96k/192kHz sample rate
• Supports external PCBEEP input and built-in digital BEEP
generator.
• Software selectable 2.5V/3.2V VREFOUT as bias voltage
for analog microphone input
• Built-in headphone amplifiers for port-C (LINE1) and port-I
(HP OUT)
• Headphone amplifier for port-I does not require DC blocking
capacitors
• Two jack detection pins each designed to detect up to 4
jacks, and S/PDIF-OUT jack detection is supported.
• 2 GPIOs are supported for customized applications (pin
shared with digital microphone interface)
• EAPD (External Amplifier Power Down) is supported
• Supports Anti-pop mode when analog power AVDD is on
and digital power is off
• Power support: 3.3V digital core power; 1.5V~3.3V digital
IO power for HDA link; 3.0V~5.5V
• Analog power; 4.5V~5.5V power stage voltage
• Built in a 5V-to-4.5V linear regulator with 60dB PSRR to
power analog circuitry
• 48-pin QFN ‘Green’ package
Item Specification
Amplifier Integrated on Audio Codec
Features See Audio Codec Features
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