*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.
February 1994COPYRIGHT
©
INTEL CORPORATION, 1996 Order Number: 290468-003
82078 CHMOS SINGLE-CHIP
FLOPPY DISK CONTROLLER
Y
Small Footprint and Low Height
Packages
Y
Supports Standard 5.0V as Well as Low
Voltage 3.3V Platforms
Ð Selectable 3.3V and 5.0V
Configuration
Ð 5.0V Tolerant Drive Interface
Y
Enhanced Power Management
Ð Application Software Transparency
Ð Programmable Powerdown
Command
Ð Save and Restore Commands for 0V
Powerdown
Ð Auto Powerdown and Wakeup
Modes
Ð Two External Power Management
Pins
Ð Consumes No Power While in
Powerdown
Y
Programmable Internal Oscillator
Y
Floppy Drive Support Features
Ð Drive Specification Command
Ð Media ID Capability Provides Media
Recognition
Ð Drive ID Capability Allows the User
to Recognize the Type of Drive
Ð Selectable Boot Drive
Ð Standard IBM and ISO Format
Features
Ð Format with Write Command for
High Performance in Mass Floppy
Duplication
Y
Integrated Host/Disk Interface Drivers
Y
Integrated Analog Data Separator
Ð 250 Kbits/sec
Ð 300 Kbits/ sec
Ð 500 Kbits/ sec
Ð 1 Mbits/sec
Ð 2 Mbits/sec
Y
Integrated Tape Drive Support
Ð Standard 1 Mbps/500 Kbps/
250 Kbps Tape Drives
Ð New 2 Mbps Tape Drive Mode
Y
Perpendicular Recording Support for
4 MB Drives
Y
Fully Decoded Drive Select and Motor
Signals
Y
Programmable Write Precompensation
Delays
Y
Addresses 256 Tracks Directly,
Supports Unlimited Tracks
Y
16 Byte FIFO
Y
Single-Chip Floppy Disk Controller
Solution for Portables and Desktops
Ð 100% PC-AT* Compatible
Ð 100% PS/2* Compatible
Ð 100% PS/2 Model 30 Compatible
Ð Fully Compatible with Intel’s 386SL
Microprocessor SuperSet
Ð Integrated Drive and Data Bus
Buffers
Y
Available in 64 Pin QFP and 44 Pin QFP
Package
(See Package Specification Order Number 240800, Package
Type S)
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.
