The Front-End LSI with a 5-Tap PRML for 2× Reading and Writing of BD-R/RW/ROM(Digital,<Special Section>Low-Power, High-Speed LSIs and Related Technologies)

概要

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The front-end LSI having a capable of 2×reading and writing of BD-R/RW/ROM is developed. Its readability is improved by adopting 5-tap adaptive partial response maximum likelihood (PRML) with the PR (a, b, c, d, e) type channel. Due to the proposed PRML, less than 2×10^<-4> of the bit error rate (BER) is achieved with radial and tangential tilt margin of over ±0.6° on 25GB disc. The method of an optimum power control (OPC) for stable writing of various BD-R/RW is proposed. The presented chip contains 14-million transistors in a 60mm^2 dies, and is fabricated in 0.18μm CMOS technology.
2007-04-01