DP8473 - Floppy Disk Controller PLUS-2

Product Overview

National Semiconductor

Datasheet Details

Part number	DP8473
Manufacturer	National Semiconductor
File Size	357.44 KB
Description	Floppy Disk Controller PLUS-2
Datasheet	DP8473 Datasheet
Additional preview pages of the DP8473 datasheet.

Product details

Description

This controller is a full featured floppy disk controller that is software compatible with the mPD765A but also includes many additional hardware and software enhancements These enhancements include additional logic specifically required for an IBM PC PC-XT PC-AT or PS 2 design This controller incorporates a precision analog data separator that includes a self trimming delay line and VCO Up to three external filters are switched automatically depending on the data rate selected This provides opt

Features

combine to provide the lowest possible PLL bandwidth with the greatest lock range and hence the widest window margin This controller includes write precompensation circuitry A shift register is used to provide a fixed 125 ns early-late precompensation for all tracks at 500k 300k 250 kb s (83 ns for 1 MB s) or a precompensation value that scales with (Continued) Features Y Y Y Y Y Y Fully mPD765A and IBM-BIOS compatible Integrates all PCXT PCAT and most PS 2 Logic On chip 24 MHz Crystal Osci.

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Published: Jan 7, 2006 |