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VT1612A

VIA
Part Number VT1612A
Manufacturer VIA
Description Stereo AC97 Codec
Published Feb 3, 2014
Detailed Description VIA Technologies Incorporated Features • • • • • • • • • • • • • • • AC’97 2.2 compliant codec 18-bit stereo full-duplex...
Datasheet PDF File VT1612A PDF File

VT1612A
VT1612A

Overview
VIA Technologies Incorporated Features • • • • • • • • • • • • • • • AC’97 2.
2 compliant codec 18-bit stereo full-duplex Σ∆ codec 1Hz resolution VSR (Variable Sampling Rate) Integrated IEC958 line driver for S/PDIF output S/PDIF compressed 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 VT1612A 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 computers multimedia subsystems.
However, it is suitable for any audio subsystem requiring stereo audio input / output with S/PDIF digital output at competitive 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 M U 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 M U VO +20dB VO AC’97 Digital Interface M U X MASTER INPUT ADC XTL_IN XTL_OUT OSC PCM IN SRC S/PDIF_OUT Figure 1.
Functional Block Diagram Revision 1.
0, October 14, 2002 1 Data Sheet ...


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