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ST tips 65nm HDD iterative decoding channel

Posted: 18 Dec 2007 ?? ?Print Version ?Bookmark and Share

Keywords:iterative read channel? hard disk drives? Tiziano? SoC?

STMicroelectronics is sampling its first 65nm iterative read channel for the low-power mobile segment of HDDs. This Mobile IP is the first offering from ST's Tiziano family of read channel macros, which will also include channels customized for the desktop and enterprise market segments. Each of the channels in the Tiziano family shares common features and firmware, allowing customers to leverage their investment across multiple product segments.

The third generation of ST's production-proven read channels, Tiziano supports the latest industry requirements for perpendicular recording, low power, servo detection and demodulation, defect mapping and self servo write.

ST's Tiziano channel innovation enhances application battery live time and reliability through lower power by using conditional iteration techniques and dynamic voltage control. Iterative decoding is targeted at perpendicular recording enabling significant capacity gains over the previous generation with at least 0.7dB post ECC SNR gain. Further capacity boost beyond the base iterative architecture is enabled through enhanced servo detection and demodulation that improves servo positioning and thus allows an increase in the number of tracks and format efficiency.

Tiziano enhances the HDD manufacturing process through a proprietary self-servo write that enables faster manufacturing cycle time and more accurate writing of tracks, for higher yield. Additionally, product reliability is enhanced by improved media defect mapping and defect handling enhancements.

The Tiziano read channel macro is available for integration within 65nm SoCs.

- Ismini Scouras

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