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Supports Four Floppy Drives Directly
(Standard and Enhanced Modes)
General Purpose 11 Bit Address Decoder
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Game Port Select Logic (FDC37C666GT
Only)
100 Pin QFP Package
TABLE OF CONTENTS
FEATURES ...................................................................................................................................... 1
GENERAL DESCRIPTION................................................................................................................ 3
PIN CONFIGURATION...................................................................................................................... 4
DESCRIPTION OF PIN FUNCTIONS ................................................................................................ 5
FUNCTIONAL DESCRIPTION ........................................................................................................ 22
SUPER I/O REGISTERS ...........................................................................................................22
HOST PROCESSOR INTERFACE............................................................................................ 22
FLOPPY DISK CONTROLLER.................................................................................................. 23
FLOPPY DISK CONTROLLER INTERNAL REGISTERS ............................................................23
COMMAND SET/DESCRIPTIONS .................................................................................................. 46
INSTRUCTION SET ........................................................................................................................ 50
PARALLEL PORT FLOPPY DISK CONTROLLER.............................................................................76
SERIAL PORT (UART) .................................................................................................................... 78
PARALLEL PORT........................................................................................................................... 92
IBM XT/AT COMPATIBLE, BI-DIRECTIONAL AND EPP MODES...............................................94
EXTENDED CAPABILITIES PARALLEL PORT ........................................................................100
INTEGRATED DRIVE ELECTRONICS INTERFACE ..................................................................... 113
CONFIGURATION......................................................................................................................... 117
OPERATIONAL DESCRIPTION..................................................................................................... 131
MAXIMUM GUARANTEED RATINGS ..................................................................................... 131
DC ELECTRICAL CHARACTERISTICS ................................................................................. 131
TIMING DIAGRAMS ...................................................................................................................... 134
ECP PARALLEL PORT TIMING...............................................................................................147
2
SMSC [ SMSC CORPORATION ]
