TABLE OF CONTENTS
FEATURES ....................................................................................................................................... 1
GENERAL DESCRIPTION ................................................................................................................ 2
PIN CONFIGURATION...................................................................................................................... 5
DESCRIPTION OF PIN FUNCTIONS ................................................................................................ 6
Buffer Type Descriptions ............................................................................................................... 9
Description of Multifunction Pins ................................................................................................. 10
REFERENCE DOCUMENTS ........................................................................................................... 10
POWER FUNCTIONALITY.............................................................................................................. 12
VCC Power ................................................................................................................................. 12
VTR Support ............................................................................................................................... 12
Internal PWRGOOD.................................................................................................................... 12
Trickle Power Functionality.......................................................................................................... 13
Maximum Current Values ............................................................................................................ 13
Power Management Events (PME/SCI) ....................................................................................... 13
FUNCTIONAL DESCRIPTION......................................................................................................... 14
Super I/O Registers..................................................................................................................... 14
Host Processor Interface ............................................................................................................. 14
FLOPPY DISK CONTROLLER........................................................................................................ 15
FDC Internal Registers ................................................................................................................ 15
Command Set/Descriptions......................................................................................................... 38
Instruction Set............................................................................................................................. 41
SERIAL PORT (UART).................................................................................................................... 68
INFRARED INTERFACE ................................................................................................................. 82
PARALLEL PORT........................................................................................................................... 83
IBM XT/AT Compatible, Bi-Directional And Epp Modes................................................................ 85
Extended Capabilities Parallel Port.............................................................................................. 91
PARALLEL PORT FLOPPY DISK CONTROLLER .........................................................................104
POWER MANAGEMENT ...............................................................................................................106
SERIAL IRQ...................................................................................................................................112
GP INDEX REGISTERS .................................................................................................................116
WATCH DOG TIMER .....................................................................................................................118
8042 KEYBOARD CONTROLLER DESCRIPTION .........................................................................119
Latches On Keyboard And Mouse IRQs .....................................................................................128
Keyboard and Mouse PME Generation .......................................................................................129
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SMSC [ SMSC CORPORATION ]
