DP8459 - All-Code Data Synchronizer

National Semiconductor

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Datasheet Details

Part number	DP8459
Manufacturer	National Semiconductor
File Size	403.77 KB
Description	All-Code Data Synchronizer
Datasheet	DP8459_NationalSemiconductor.pdf

DP8459 Product details

Description

The DP8459 Data Synchronizer is an integrated phase locked loop circuit which has been designed for application in magnetic hard disk, ﬂexible (ﬂoppy) disk, optical disk, and tape drive memory systems for data re-synchronization and clock recovery with any standard recording code, operating to 25 Mb/s.

Features

n n n n n n n n n n n Fully integrated dual-gain PLL Zero phase start lock sequence 250 Kbit/sec.
25 Mbit/sec data rate range Frequency lock capability (optional) for all standard recording codes Digital window strobe control, 5-bit resolution Two-port PLL ﬁlter network PLL free-run (Coast) control for optical disk defects Synchronization pattern (preamble lock) detection Non-glitching multiplexed read/write clock output +5V supply DP8459 supplied in 28-pin plastic chip carrier (PCC) and.

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Published: Jan 7, 2006 |