Audio Codec And Amplifier - Acer Aspire 8951G Service Manual

Audio Codec and Amplifier

Item
Audio Controller
Features
1-42
Realtek ALC669X-GR
Meets Microsoft WLP (Windows Logo Program) audio

requirements
High performance DACs with digital >110dB and analog

98dB (A-weighting) signal-to-noise
High performance ADCs with digital > 100dB and analog

90dB (A-Weighting) signal-to-noise ratio
Six DAC channels support 16/20/24-bit PCM format for 5.1

sound playback
Two stereo ADCs support 16/20/24-bit PCM format, multiple

stereo recording
All DACs supports 44.1k/48k/96k/192kHz sample rate

All ADCs supports 44.1k/48k/96k/192kHz sample rate

Primary 16/20/24-bit SPDIF-OUT supports

32k/44.1k/48k/88.2k/96k/192kHz sample rate
Secondary 16/20/24-bit SPDIF-OUT supports

32k/44.1k/48k/88.2k/96k/192kHz sample rate
Analog jacks (port-A, B, C, E and G) support stereo input and

output re-tasking
Support MONO output at port-H

Port-A/D/E/F built in headphone amplifiers

Port-E and Port-F headphone amplifiers can drive earphone

directly without DC blocking capacitor
Port-B/C/E/F with software selectable boost gain

(+10/+20/+30dB) for analog microphone input
Supports external PCBEEP input and built-in digital BEEP

generator
Software selectable 2.5V/3.2V VREFOUT

Supports legacy analog mixer architecture

Four channels of digital microphone array input for voice

applications
Two jack detection pins each designed to detect up to 4 jacks

plugging
1.0dB/step playback volume control

1.5dB/step recording volume control

High pass filter to cancel DC offset from AD converter

Jack detection function is supported when device is in power

down mode (D3)
2 GPIOs (General Purpose Input and Output) for customized

applications. GPIO0 and GPIO1 share pin with digital
microphone
Supports anti-pop mode when analog power AVDD is on and

digital power is off.
Hardware Specifications and Configurations
Specification