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5.1-Channel High Definition Audio Codec
General Description
The ALC665 is a 5.1-Channel High Definition Audio Codec designed for Windows Vista desktop and mobile PCs. Its performance and functionality meet Microsoft Windows Vista (WLP 4.0) premium mobile requirements. The ALC665 also conforms to Intel’s Audio Codec low-power-state white paper and is ECR compliant.

The ALC665 features three stereo DACs, two stereo ADCs, and legacy analog input to analog output mixing, to provide a fully integrated audio solution for multimedia PC systems.

SURR, LINE2, and MIC2 ports are input and output capable. LINE2 and MIC2 are headphone outputs that do not require a capacitor to block different DC levels.

The ALC665 provides two S/PDIF outputs and supports 16/20/24-bit S/PDIF output function and a sampling rate of up to 192kHz. It offers easy connection of PCs to high quality consumer electronic products such as digital decoders and speakers. The ALC665 supports 4 digital microphone array input.

The ALC665 supports host/soft audio from the Intel ICH series chipset, and also from any other HDA compatible audio controller. With EAX/Direct Sound 3D/I3DL2/A3D compatibility, and excellent software utilities like Karaoke mode, environment emulation, software equalizer, HRTF 3D positional audio, and optional Dolby® Digital Live, DTS® CONNECT™, and Dolby® Home Theater programs, the ALC665 provides an excellent home entertainment package and game experience for PC users.
    Hardware Features
  • Meets performance requirements for Microsoft WLP 4.0 Vista premium mobile PCs
  • Six-channel DAC supports 16/20/24-bit PCM format for 5.1-channel audio solution
  • Two stereo ADC support 16/20/24-bit PCM format
  • All DAC support independent 44.1k/48k/96k/192kHz sample rate
  • All ADC support independent 44.1k/48k/96k/192kHz sample rate
  • Supports 44.1k/48k/96k192kHz S/PDIF output
  • SURR, LINE2, MIC2 are stereo input and output re-tasking
  • LINE2 and MIC2 are headphone outputs that do not require a capacitor to block different DC levels
  • MONO is a mono output
  • Supports analog PCBEEP input
  • Integrates digital BEEP generator
  • Up to four channels of microphone array input are supported for AEC/BF application
  • Supports legacy analog input to analog output mixer
  • Built-in headphone amplifier for SURR out (port A)
  • Software selectable 2.5V and 3.2V reference output for microphone bias
  • Software selectable boost gain (+10/+20/+30dB) for analog microphone input
  • Two jack detection pins; each supports detection of up to 4 jacks
  • Jack detection function is supported when device is in power down mode (D3)
  • Supports two GPIO pins (General Purpose Input and Output)
  • Supports EAPD (External Amplifier Power Down) control for external amplifier
  • Supports 1.5V~3.3V scalable I/O for HD Audio link
  • Supports anti-pop mode when analog power AVDD is on and digital power is off
  • 48-pin LQFP ‘Green’ package

    Software Features
  • Compatible with Windows Vista Premium (complies with Microsoft WLP 4.0 specifications)
  • WaveRT-based audio function driver and logo ready for Windows Vista
  • EAX™ 1.0 & 2.0 compatible
  • Direct Sound 3D™ compatible
  • I3DL2 compatible
  • HRTF 3D Positional Audio (Windows XP only)
  • Friendly user interface for 2-foot or 10-foot remote control applications
  • Emulation of 26 sound environments to enhance gaming experience
  • 10 Software Equalizer Bands
  • Voice Cancellation and Key Shifting in Karaoke mode
  • Windows Vista style configuration panel to improve user experience
  • Microphone Acoustic Echo Cancellation (AEC), Noise Suppression (NS), and Beam Forming (BF) technology for voice application
  • Features optional Dolby® Digital Live, Dolby® Home Theater, and DTS® CONNECT™ software
  • Desktop and mobile multimedia PCs
  • Information Appliances (IA)
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