I/O Controller Floppy Disc Controller 48-Pin TQFP

The SMSC FDC37C78 Floppy Disk Controller utilizes SMSC"s proven SuperCell technology for increased product reliability and functionality. The FDC37C78 optimized for motherboard applications. The FDC37C78 supports both 1 Mbps and 2 Mbps data rates and vertical vertical recording operation at 1 Mbps Data Rate. The FDC37C78 incorporates SMSC"s true CMOS 765B floppy disk controller, advanced digital data separator, 16 byte data FIFO, on-chip 12 mA bus drivers and two floppy direct drive support. The true CMOS 765B core provides 100% compatibility with IBM PC/XT and PC/AT architectures in addition to providing data overflow and underflow protection. The SMSC advanced digital data separator incorporates SMSC"s patented data separator technology, allowing for ease of testing and use. The FDC37C78 incorporates sophisticated power control circuitry (PCC). The PCC supports multiple low power down modes. The FDC37C78 Floppy Disk Controller incorporates Software Configurable Logic (SCL) for ease of use. Use of the SCL feature allows programmable system configuration of key functions of FDC The FDC37C78 does not require any external filter components, and is, therefore easy to use and offers lower system cost and reduced board area. The FDC37C78 is software and register compatible with SMSC"s proprietary 82077AA core.

• 3.3/5 Volt Operation
• Intelligent Auto Power Management
• 2.88MB FDC37C78 Floppy Disk Controller
  • Licensed CMOS 765B Floppy Disk Controller
  • Software and Register Compatible with SMSC"s Proprietary 82077AA Compatible Core
  • Supports Two Floppy Drives Directly
  • Supports Vertical Recording Format
  • 16 Byte Data FIFO
  • 100% IBM Compatibility
  • DMA Enable Logic
  • Data Rate and Drive Control Registers
  • Swap Drives A and B
  • Non-Burst Mode DMA Option
  • Detects All Overrun and Underrun Conditions
  • Sophisticated Power Control Circuitry (PCC) Including Multiple Powerdown Modes for Reduced Power Consumption
• Enhanced Digital Data Separator
  • 2 Mbps (Only Available When VCC = 5V), 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps Data Rates
  • Programmable Precompensation Modes
• 48 pin TQFP Package