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82078 CHMOS SINGLE-CHIP FLOPPY DISK CONTROLLER
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Small Footprint and Low Height Packages Supports Standard 5 0V as Well as Low Voltage 3 3V Platforms Selectable 3 3V and 5 0V Configuration 5 0V Tolerant Drive Interface Enhanced Power Management Application Software Transparency Programmable Powerdown Command Save and Restore Commands for 0V Powerdown Auto Powerdown and Wakeup Modes Two External Power Management Pins Consumes No Power While in Powerdown Programmable Internal Oscillator Floppy Drive Support Features Drive Specification Command Media ID Capability Provides Media Recognition Drive ID Capability Allows the User to Recognize the Type of Drive Selectable Boot Drive Standard IBM and ISO Format Features Format with Write Command for High Performance in Mass Floppy Duplication Integrated Host Disk Interface Drivers
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Integrated Analog Data Separator 250 Kbits sec 300 Kbits sec 500 Kbits sec 1 Mbits sec 2 Mbits sec Integrated Tape Drive Support Standard 1 Mbps 500 Kbps 250 Kbps Tape Drives New 2 Mbps Tape Drive Mode Perpendicular Recording Support for 4 MB Drives Fully Decoded Drive Select and Motor Signals Programmable Write Precompensation Delays Addresses 256 Tracks Directly Supports Unlimited Tracks 16 Byte FIFO Single-Chip Floppy Disk Controller Solution for Portables and Desktops 100% PC-AT Compatible 100% PS 2 Compatible 100% PS 2 Model 30 Compatible Fully Compatible with Intel's 386SL Microprocessor SuperSet Integrated Drive and Data Bus Buffers Available in 64 Pin QFP and 44 Pin QFP Package
(See Package Specification Order Number 240800 Package Type S)
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The 82078 Product Family brings a set of enhanced floppy disk controllers These include several features that allow for easy implementation in both the portable and desktop market The current family includes a 64 pin and a 44 pin part in the smaller form factor QFP package The 3 3V version of the 64 pin part provides an ideal solution for the rapidly emerging 3 3V platforms It also allows for a 5 0V tolerant floppy drive interface that lets the users retain their normal 5 0V drives Another version of the 64 pin part provides support for 2 Mbps data rate tape drives
Other brands and names are the property of their respective owners
Other brands and names are the property of their respective owners Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or copyright for sale and use of Intel products except as provided in Intel's Terms and Conditions of Sale for such products Intel retains the right to make changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT
INTEL CORPORATION 1996
February 1994
Order Number 290468-003
82078
Table 1-0 64 Pin Part Versions 3 3V 82078SL 82078-1 X 5 0V X X X 2 Mbps Data Rate
The 44 pin is targeted for platforms that are operated at 3 3V or 5 0V and do not require more than two drive support The 82078-5 is designed for price sensitive 5 0V designs which do not include 4 MB drive support Table 2-0 44 Pin Part Versions 3 3V 82078 82078-5 82078-3 X 5 0V X X X 1 Mbps Data Rate X
Both parts can be operated at 1 Mbps 500 Kbps 300 Kbps 250 Kbps Additionally one version of the 64 pin part provides 2 Mbps data rate operation specific for the new tape drives The 82078 is fabricated with Intel's advanced CHMOS III technology
290468 - 1
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82078
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