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FD1771-01 fiches techniques PDF

Western Digital - FLOPPY DISK FORMATTER/CONTROLlER

Numéro de référence FD1771-01
Description FLOPPY DISK FORMATTER/CONTROLlER
Fabricant Western Digital 
Logo Western Digital 





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FD1771-01 fiche technique
WESTERN DIGITAL
COR PO RAT /0 N
FD1771-01 Floppy Disk Formatter/Controller
FEATURES
• SOFT SECTOR FORMAT COMPATIBILITY
• AUTOMATIC TRACK SEEK WITH VERIFICATION
• READ MODE
Single/Multiple Sector Write with Automatic
Sector Search or Entire Track Read
Selectable 128 Byte or Variable Length Sector
• WRITE MODE
Single/Multiple Sector Write with Automatic
Sector Search
Entire Track Write for Diskette Formatting
• PROGRAMMABLE CONTROLS
Selectable Track-to-Track Stepping Time
Selectable Head Settling and Head Engage
Times
Selectable Three Phase or Step and Direction
and Head Positioning Motor Controls
• SYSTEM COMPATIBILITY
i
Double Buffering of Data a-Bit Bi-Directional ....
Bus for Data. Control and Status
DMA or Programmed Data Transfers
All Inputs and Outputs are TTL Compatible
.,uzi
;:)
APPLICATIONS
• FLOPPY DISK DRIVE INTERFACE
• SINGLE OR MULTIPLE DRIVE
CONTROLLER/FORMATTER
• NEW MINI-FLOPPY CONTROLLER
GENERAL DESCRIPTION
The FD1771 is a MOS/LSI device that performs the
functions of a Floppy Disk Controller/Formatter.
The device is designed to be included in the disk
drive electronics, and contains a flexible interface
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fD1771 SYSTEM BLOCK DIAGRAM

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