GENERAL DESCRIPTION The SMSC FDC37C78 Floppy Disk Controller utilizes SMSCs 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. FEATURES • 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 SMSCs 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
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