MiTAC 8050QMA Manuel de service télécharger pdf (Page 17)

50QMA

N/B Maintenance

• Support parallel 4-wire power switch interface

The ALC655 is a 16-bit, full duplex AC'97 2.3 compatible six channels audio CODEC designed for PC multimedia

systems, including host/soft audio and AMR/CNR based designs. The ALC655 incorporates proprietary converter

technology to meet performance requirements on PC99/2001 systems. The ALC655 CODEC provides three pairs of

stereo outputs with 5-Bitvolume controls, a mono output, and multiple stereo and mono inputs, along with flexible

mixing, gain and mute functions to provide a complete integrated audio solution for PCs. The digital interface

circuitry of the ALC655 CODEC operates from a 3.3V power supply for use in notebook and PC applications. The

ALC655 integrates 50mW/20ohm headset audio amplifiers at

Front-Out and Surr-Out, built-in 14.318M 24.576MHz PLL and PCBEEP generator, those can save BOM costs. The

ALC655 also supports the S/PDIF input and output function, which can offer easy connection of PCs to consumer

electronic products, such as AC3 decoder/speaker and mini disk devices. ALC655 supports host/soft audio from Intel

ICH6 chipsets as well as audio controller based VIA/SIS/ALI/AMD/nVIDIA/ATI chipset. Bundled Windows series

drivers (WinXP/ME/2000/98/NT), EAX/

Direct Sound 3D/ I3DL2/ A3D compatible sound effect utilities (supporting Karaoke, 26-kind of environment sound

emulation,10-band equalizer), HRTF 3D positional audio and Sensaura™ 3D (optional) provide an excellent

entertainment package and game experience for PC users. Besides, ALC655 includes Realtek’s impedance sensing

techniques that makes device load on outputs and inputs can be detected.

1.2.6 AC’97 Audio System: Advance Logic, Inc, ALC655

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MiTAC 8050QMA Manuel de service Page 17