TABLE OF CONTENTS
FEATURES.............................................................................................................................................. 1
GENERAL DESCRIPTION ...................................................................................................................... 2
PIN CONFIGURATION............................................................................................................................ 4
DESCRIPTION OF PIN FUNCTIONS ..................................................................................................... 5
Buffer Type Description.......................................................................................................................12
BLOCK DIAGRAM .................................................................................................................................13
3.3 VOLT OPERATION / 5 VOLT TOLERANCE ...................................................................................14
Power Functionality..............................................................................................................................14
VCC Power..........................................................................................................................................14
VTR Support .......................................................................................................................................14
Internal PWRGOOD ............................................................................................................................14
Trickle Power Functionality..................................................................................................................14
Maximum Current Values ....................................................................................................................15
Power Management Events (PME/SCI) ..............................................................................................15
FUNCTIONAL DESCRIPTION ...............................................................................................................16
FLOPPY DISK CONTROLLER ..............................................................................................................21
SERIAL PORT (UART)...........................................................................................................................68
INFRARED INTERFACE ........................................................................................................................85
PARALLEL PORT ..................................................................................................................................89
POWER MANAGEMENT .....................................................................................................................111
SERIAL IRQ .........................................................................................................................................115
PCI CLKRUN SUPPORT .....................................................................................................................119
GENERAL PURPOSE I/O ....................................................................................................................122
SYSTEM MANAGEMENT INTERRUPT (SMI) .....................................................................................128
PME SUPPORT....................................................................................................................................129
RUNTIME REGISTERS........................................................................................................................130
CONFIGURATION................................................................................................................................137
OPERATIONAL DESCRIPTION ..........................................................................................................172
Maximum Guaranteed Ratings..........................................................................................................172
DC Electrical Characteristics .............................................................................................................172
TIMING DIAGRAMS .............................................................................................................................176
PACKAGE OUTLINE ...........................................................................................................................197
3
SMSC [ SMSC CORPORATION ]
