USB97CFDC
USB Floppy Disk Controller
FEATURES
3.3 Volt, Low Power Operation
Complete USB Specification 1.1 Compatibility
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Includes USB Transceiver
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Based on an Enhanced Version of SMSC’s
Industry Proven USB97C100 USB Controller
Complete System Solution Including USB Mass
Storage Class Compliant Win98/2000 Driver and
Firmware
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Supports 640K, 720K, 1.44M, 1.2M Windows 98
J, and 1.2M NEC DOS 6.x Formats
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Supports Both the UFI and SFF8070i Command
Sets
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Supports USB Mass Storage Compliant
Bootable Floppy BIOS
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4ms Seek Times
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USB 1.1 Compliance, Including Low Power
Device Class SUSPEND Mode Operation and
Power Control of Disk Drive
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Disk Drive Feedback of Readiness Upon Power
Re-Application Option
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Option for Ultra High Performance Using
Additional Caching SRAM
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Support for Floppy Drive Power Control
Contains SMSC’s Industry Proven Floppy Disk
Controller
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Licensed CMOS 765B Floppy Disk Controller
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Supports Single Normal or Three Mode Floppy
Drives
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Supports Vertical Recording Format and High
Capacity Drives in User Written Firmware
Applications
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Detects All Overrun and Underrun Conditions
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Sophisticated Power Control Circuitry (PCC)
Including Multiple Powerdown Modes for
Reduced Power Consumption
Enhanced Digital Data Separator
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1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps Data
Rates
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Programmable Precompensation Modes
Intelligent Auto Power Management
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<300µA SUSPEND Current
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<75mA Operating Current
External Program Memory Interface
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32K Byte Code Space (Supplied Firmware
Requires 16KB Memory)
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Flash, SRAM, or EPROM Memory
4KB Internal Buffer SRAM for High Performance
Operation
Optional External Cache Memory
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Up to 16K x 8 External SRAM may be Used for
Custom Tape/ Drive Applications
Integrated 14.318 MHz Crystal Driver Circuit
100 pin TQFP package (12.0 x 12.0 mm footprint)
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25% smaller body size than other 100 pin TQFP
packages
ORDERING INFORMATION
Order Number: USB97CFDC-MN
100 Pin TQFP Package
SMSC DS – USB97CFDC
Rev. 12/15/2000
SMSC [ SMSC CORPORATION ]
