A PRML equalizer for hard disk drives with low sensitivity to sampling phase variation

Author

Cerosa, A. ; Mian, G.A.

Author_Institution

Dept. of Electron. & Comput. Sci., Univ. of Padova, Padua, Italy

fYear

1998

fDate

8-11 Sept. 1998

Firstpage

1

Lastpage

4

Abstract

This work presents a new architecture for the realization of Hard Disk Drive Read Channels, using EPR-IV equalization. The pre-equalization is realized as a sampled-data system in order to have precise pulse shaping and simply tunable bandwidth. The equalization is then completed by a fractionally spaced equalizer, which ensures low sensitivity to sampling phase variation. The system complexity is reduced with respect to typical solutions, while the performances are within the usual specs in every operating condition, as confirmed by careful simulations. The architecture was designed to be integrated in a standard CMOS IC.

Keywords

CMOS integrated circuits; hard discs; sampled data systems; sampling methods; CMOS IC; EPR- IV equalization; PRML equalizer; fractionally spaced equalizer; hard disk drive read channels; operating condition; sampled-data system; sampling phase variation; system complexity; tunable bandwidth; Complexity theory; Equalizers; Finite impulse response filters; Hard disks; High definition video; Standards; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference (EUSIPCO 1998), 9th European

Conference_Location

Rhodes

Print_ISBN

978-960-7620-06-4

Type

conf

Filename

7089682