LPC47B272QFP Ver la hoja de datos (PDF) - SMSC -> Microchip
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LPC47B272QFP Datasheet PDF : 195 Pages
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PARALLEL PORT....................................................................................................................................................74
IBM XT/AT COMPATIBLE, BI-DIRECTIONAL AND EPP MODES ..................................................................75
EXTENDED CAPABILITIES PARALLEL PORT.................................................................................................79
PARALLEL PORT FLOPPY DISK CONTROLLER...........................................................................................90
FDC SWAP BIT..........................................................................................................................................................90
FLOPPY ON PARALLEL PORT PIN....................................................................................................................92
POWER MANAGEMENT .......................................................................................................................................93
SERIAL IRQ ..............................................................................................................................................................96
TIMING DIAGRAMS FOR SER_IRQ CYCLE ....................................................................................................96
8042 KEYBOARD CONTROLLER DESCRIPTION ...........................................................................................99
LATCHES ON KEYBOARD AND MOUSE IRQS ..........................................................................................................105
KEYBOARD AND MOUSE PME GENERATION ..........................................................................................................106
GENERAL PURPOSE I/O .....................................................................................................................................108
GPIO PINS.............................................................................................................................................................108
EITHER EDGE TRIGGERED INTERRUPTS ..................................................................................................113
LED FUNCTIONALITY .......................................................................................................................................113
WATCH DOG TIMER..........................................................................................................................................113
SYSTEM MANAGEMENT INTERRUPT (SMI) ................................................................................................114
PME SUPPORT.......................................................................................................................................................116
‘WAKE ON SPECIFIC KEY’ OPTION ...............................................................................................................117
FAN SPEED CONTROL AND MONITORING ..................................................................................................119
FAN SPEED CONTROL ...........................................................................................................................................119
FAN TACHOMETER INPUTS ....................................................................................................................................120
SECURITY FEATURE ..........................................................................................................................................123
GPIO DEVICE DISABLE REGISTER CONTROL.......................................................................................................123
DEVICE DISABLE REGISTER ..................................................................................................................................123
GAME PORT LOGIC ............................................................................................................................................123
POWER CONTROL REGISTER ................................................................................................................................125
VREF PIN ..............................................................................................................................................................125
ISA IRQ TO SERIAL IRQ CONVERSION CAPABILITY ...............................................................................126
RUNTIME REGISTERS ........................................................................................................................................127
CONFIGURATION ................................................................................................................................................150
OPERATIONAL DESCRIPTION.........................................................................................................................167
MAXIMUM GUARANTEED RATINGS*............................................................................................................167
DC ELECTRICAL CHARACTERISTICS..........................................................................................................167
TIMING DIAGRAMS ..............................................................................................................................................170
SMSC LPC47B27x
-4-
DATASHEET
Rev. 04-17-07
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