User Guide

8965 N/B Maintenance

devices. ALC655 supports host/soft audio from Intel ICHx 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.

 Meets performance requirements for audio on PC99/2001 systems

 Meets Microsoft WHQL/WLP 2.0 audio requirements

 16-bit Stereo full-duplex CODEC with 48KHz sampling rate

 Compliant with AC’97 2.3 specifications

- 14.318MHz- 24.576MHz PLL to save crystal

- 12.288MHz BITCLK input can be consumed

- Integrated PCBEEP generator to save buzzer

- Interrupt capability

 Three analog line-level stereo inputs with 5-bit volume control: LINE_IN, CD, AUX

 High quality differential CD input

 Two analog line-level mono input: PCBEEP, PHONE-IN

 Two software selectable MIC inputs applications (software selectable)

 Boost preamplifier for MIC input

 50mW/20 amplifier

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