Download SigmaTel High Definition Audio CODEC (for 64-bit Windows) Computer Driver Update

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thumb|180px|SigmaTel's AC'97 audio codec chip SigmaTel was an American system-on-a-chip (SoC), electronics and software company headquartered in Austin, Texas, that designed AV media player/recorder SoCs, reference circuit boards, SoC software development kits built around a custom cooperative kernel and all SoC device drivers including USB mass storage and AV decoder DSP, media player/recorder apps, and controller chips for multifunction peripherals. SigmaTel became Austin's largest IPO as of 2003 when it became publicly traded on NASDAQ. The company was driven by a talented mix of electrical and computer engineers plus other professionals with semiconductor industry experience in Silicon Hills, the number two IC design region in the United States, after Silicon Valley. SigmaTel (trading symbol SGTL) was acquired by Freescale Semiconductor in 2008 and delisted from NASDAQ.