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TABLE OF CONTENTS
FEATURES ....................................................................................................................................... 1
GENERAL DESCRIPTION................................................................................................................. 4
DESCRIPTION OF PIN FUNCTIONS ................................................................................................ 6
DESCRIPTION OF MULTIFUNCTION PINS.................................................................................... 10
REFERENCE DOCUMENTS ........................................................................................................... 10
FUNCTIONAL DESCRIPTION......................................................................................................... 12
SUPER I/O REGISTERS................................................................................................................. 12
HOST PROCESSOR INTERFACE................................................................................................... 12
FLOPPY DISK CONTROLLER ........................................................................................................ 13
FDC INTERNAL REGISTERS.......................................................................................................... 13
COMMAND SET/DESCRIPTIONS................................................................................................... 36
INSTRUCTION SET ........................................................................................................................ 39
INFRARED INTERFACE.................................................................................................................. 80
PARALLEL PORT............................................................................................................................ 81
IBM XT/AT COMPATIBLE, BI-DIRECTIONAL AND EPP MODES .................................................... 83
EXTENDED CAPABILITIES PARALLEL PORT................................................................................ 89
PARALLEL PORT FLOPPY DISK CONTROLLER...........................................................................102
POWER MANAGEMENT................................................................................................................104
V
TR
SUPPORT................................................................................................................................104
SERIAL IRQ...................................................................................................................................110
GP INDEX REGISTERS.................................................................................................................115
WATCH DOG TIMER.....................................................................................................................117
8042 KEYBOARD CONTROLLER DESCRIPTION..........................................................................118
SYSTEM MANAGEMENT INTERRUPT (SMI).................................................................................127
PME SUPPORT..............................................................................................................................127
CONFIGURATION..........................................................................................................................128
OPERATIONAL DESCRIPTION......................................................................................................158
MAXIMUM GUARANTEED RATINGS.............................................................................................158
DC ELECTRICAL CHARACTERISTICS..........................................................................................158
TIMING DIAGRAMS.......................................................................................................................163
ECP PARALLEL PORT TIMING......................................................................................................184
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