VT1612A Datasheet | VIA

VIA Technologies Incorporated Features - - - - - - - - - - - - - - - AC’97 2.2 pliant codec 18-bit stereo full-duplex Σ∆ codec 1Hz resolution VSR (Variable Sampling Rate) Integrated IEC958 line driver for S/PDIF output S/PDIF pressed digital or LPCM audio out 3D stereo expansion for simulated surround 18-bit independent rate stereo ADC/DAC Hardware VU peak meters for PCM streams 4 stereo, 2 mono analog line-level inputs Alt. line-level output with volume control, or Headphone Amplifier with Thermal Protection Low Power consumption mode Exceeds Microsoft® WHQL logo requirements 3.3V digital, 3.3 or 5V analog power supply 48-pin LQFP small footprint package Stereo AC‘97 Codec with S/PDIF Description VIA Technologies’ VT1612ATM 18-bit ¦∆ audio codec conforms to the AC’97 2.2 and S/PDIF specifications. The VT1612A integrates Sample Rate Converters and can be adjusted in 1 Hz increments. The analog mixer circuitry integrates a stereo enhancement to provide a pleasing 3D surround sound effect for stereo media. Furthermore, an integrated headphone amplifier with thermal shutdown adds signal value by reducing the BOM. This codec is designed with aggressive power management to achieve low power consumption. When used with a 3.3V analog supply, power consumption is further reduced. The primary applications for this part are desktop and portable personal puters multimedia subsystems. However, it is suitable for any audio subsystem requiring stereo audio input / output with S/PDIF digital output at petitive prices. MASTER PC_BEEP PHONE FRONT PCM OUT LINE_OUT VO VO SRC DAC MUT MUT VO VO VO VO VO MUT MUT MUT MUT MUT MUT S S 3D S M U S 02h 04h HP AMP LINE CD VIDEO AUX MIC1 MIC2 SYNC BIT_CLK SDATA_OUT SDATA_IN RESET# MASTER LNL/HP_OUT MONO VOL- MONO_OUT VO +20d B AC’97 Digital Interface MASTER INPUT XTL_IN XTL_OUT PCM...