Stereo audio CODEC

US5648778A · kind A · utility

Assignee

• Advanced Micro Devices, Inc. · US

Inventors

• Alfredo R. Linz · Austin, US
• Carlin D. Cabler · Austin, US
• Glen W. Brown · Mundelein, US
• Martin P. Soques · Austin, US

Key dates

• Filing date: Jul 17, 1996
• Grant date: Jul 15, 1997
• Expiry date: Jul 17, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G10H2250/611
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

A stereo audio CODEC, including means for performing D/A and A/D conversions, means for reducing digitally induced noise during attenuation/gain changes, data format conversion means, analog and digital filtering means, analog mixing means, on-chip 16-sample, 32-bit wide record and playback FIFOs, serial interface with external serial DSP, large local memory for supplementing on-chip record and playback FIFOs, control registers, register data bus and synthesizer DAC.