82078-3 [INTEL]
FLOPPY DISK CONTROLLER; 软盘控制器
| 型号： | 82078-3 |
| 厂家： | 
INTEL |
| 描述： | FLOPPY DISK CONTROLLER |
| 文件： | 总3页 (文件大小：73K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
82078 CHMOS SINGLE-CHIP
FLOPPY DISK CONTROLLER
Y
Y
Y
Small Footprint and Low Height
Packages
Integrated Analog Data Separator
Ð 250 Kbits/sec
Ð 300 Kbits/ sec
Ð 500 Kbits/ sec
Ð 1 Mbits/sec
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
Ð 2 Mbits/sec
Y
Integrated Tape Drive Support
Ð Standard 1 Mbps/500 Kbps/
250 Kbps Tape Drives
Y
Enhanced Power Management
Ð Application Software Transparency
Ð Programmable Powerdown
Command
Ð New 2 Mbps Tape Drive Mode
Y
Y
Y
Y
Perpendicular Recording Support for
4 MB Drives
Ð Save and Restore Commands for 0V
Powerdown
Ð Auto Powerdown and Wakeup
Modes
Fully Decoded Drive Select and Motor
Signals
Programmable Write Precompensation
Delays
Ð Two External Power Management
Pins
Ð Consumes No Power While in
Powerdown
Addresses 256 Tracks Directly,
Supports Unlimited Tracks
Y
Y
Programmable Internal Oscillator
Y
Y
16 Byte FIFO
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
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 Standard IBM and ISO Format
Features
Ð Integrated Drive and Data Bus
Buffers
Ð Format with Write Command for
High Performance in Mass Floppy
Duplication
Y
Available in 64 Pin QFP and 44 Pin QFP
Package
(See Package Specification Order Number 240800, Package
Type S)
Y
Integrated Host/Disk Interface Drivers
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
5.0V
X
2 Mbps Data Rate
82078SL
82078-1
X
X
X
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
5.0V
X
1 Mbps Data Rate
82078
X
82078-5
82078-3
X
X
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
2
82078
290468–2
3
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