Gateway EC14D, Service Manual

Page: 27 / 182

Chapter 1 17
Audio Interface
Item Specification
Audio
Controller Realtek ALC269X-GR for High Definition Audio Codec
• Features
•
98dB Signal-to-Noise Ratio (A-weighting) for DAC/ADC output
•
Meets WLP (Windows Logo Program) 3.10 and future WLP requirements
2+2-channel DAC supports 16/20/24-bit PCM format for independent two
stereo channel audio playback
•
4-channel ADC supports 16/20/24-bit PCM format for independent two
stereo channel audio inputs
•
All DACs supports 44.1/48/96/192kHz sample rate
•
All ADCs support 44.1/48/96kHz sample rate
•
SPDIF-OUT support 16/20/24-bit format and 32/44.1/48/88.2/96/192kHz
rate
•
Supports MONO line level output
•
Supports external PCBEEP input and built-in digital BEEP generator
•
Software selectable 2.5V/3.2V/4.2V VREFOUT as bias voltage for analog
microphone input
•
Two jack detection pins each designed to detect up to 4 jacks
•
1dB resolution of input and output volume control
•
Progra10/+20/+30dB boost gain for analog microphone input
•
Built-in headphone amplifiers for port-A and port-C.
•
2 GPIOs are supported for customized applications (pin shared with digital
microphone interface)
•
EAPD (External Amplifier Power Down) is supported (pin shared with
secondary SPDIF-OUT)
•
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; 3.3V~5.0V analog power; 3.3V~5.0V power stage voltage
•
Enhanced power management features
•
Secondary SPDIF-OUT supports 16/20/24-bit format and 32k/44.1k/48k/
88.2k/96k/192kHz rate
•
Supports stereo digital microphone input
•
Programmable boost gain and volume control for digital microphone input
•
Headphone amplifier for port-A does not require DC blocking capacitors
•
Stereo Bridge-Tied Load Class-D amplifier at port-D has 2Watt (rms)/4?
per channel output
•
Short circuit and thermal overload protection for Class D amplifier
•
Supports digital PWM output at port-D which system integrator can easily
connect the output to external power amplifier receives digital audio
stream
•
Five band hardware equalizer designed for BTL output (port-D) to
compensate for frequency response while driving the mini-speaker
•
Intel low power ECR compliant: supports power status control, jack
detection, and wake-up event in D3 mode
•
48-pin QFN ‘Green’ package