Packard Bell EasyNote LS11HR, Service Manual

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Hardware Specifications and Configurations
1-35
Audio Codec and Amplifier
Item Specification
Audio Controller Audio codec: Realtek ALC271X-VB3
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
S/PDIF-OUT support 16/20/24-bit format and
44.1/48/88.2/96/192kHz rate
Supports MONO line level output
Supports external PCBEEP input and built-in digital BEEP
generator
Software selectable 2.5V/3.2V VREFOUT as bias voltage for
analog microphone input Progra12/+24/+36dB
boost gain for analog microphone input
Supports stereo digital microphone input
Programmable boost gain and volume control for digital
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
Enhanced power management features for normal operation
and standby mode
Stereo Bridge-Tied Load Class-D amplifier at port-D has
2Watt (rms)/4
Ω
per channel output
Short circuit and thermal overload protection for Class-D
amplifier
48-pin QFN 'Green' package