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