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FDC37B78X Datasheet(PDF) 3 Page - SMSC Corporation

Part No. FDC37B78X
Description  Enhanced Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR
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Maker  SMSC [SMSC Corporation]
Homepage  http://www.smsc.com
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TABLE OF CONTENTS
FEATURES.......................................................................................................................... 1
GENERAL DESCRIPTION................................................................................................... 5
DESCRIPTION OF PIN FUNCTIONS .................................................................................. 7
BUFFER TYPE DESCRIPTIONS ........................................................................................12
REFERENCE DOCUMENTS ..............................................................................................14
FUNCTIONAL DESCRIPTION ............................................................................................15
SUPER I/O REGISTERS.................................................................................................15
HOST PROCESSOR INTERFACE ..................................................................................15
FLOPPY DISK CONTROLLER ...........................................................................................16
FDC INTERNAL REGISTERS......................................................................................16
COMMAND SET/DESCRIPTIONS ...............................................................................41
Force Write Protect ......................................................................................................70
SERIAL PORT (UART) .......................................................................................................71
REGISTER DESCRIPTION..........................................................................................71
INFRARED INTERFACE.....................................................................................................87
PARALLEL PORT ...............................................................................................................88
IBM XT/AT COMPATIBLE, BI-DIRECTIONAL AND EPP MODES ......................................90
EXTENDED CAPABILITIES PARALLEL PORT ..................................................................96
PARALLEL PORT FLOPPY DISK CONTROLLER.........................................................109
POWER MANAGEMENT..................................................................................................111
FDC Power Management ...........................................................................................111
UART Power Management.........................................................................................115
Parallel Port ...............................................................................................................115
VBAT Support...............................................................................................................115
VTR Support................................................................................................................115
Internal PWRGOOD...................................................................................................116
CIRCC PLL Power Control .........................................................................................116
32.768 kHz Standby Clock Output..............................................................................116
BIOS BUFFER ..................................................................................................................122
GENERAL PURPOSE I/O.................................................................................................123
Description .................................................................................................................123
RUN STATE GPIO DATA REGISTER ACCESS ........................................................125
GPIO OPERATION ....................................................................................................127
8042 KEYBOARD CONTROLLER DESCRIPTION ...........................................................129
RTC INTERFACE .............................................................................................................138
SOFT POWER MANAGEMENT .......................................................................................148
ACPI/PME/SMI FEATURES..............................................................................................152
ACPI Features............................................................................................................152
Wake Events..............................................................................................................153
PME SUPPORT .........................................................................................................154
ACPI/PME/SMI REGISTERS.........................................................................................155
Register Description ...................................................................................................155
Wakeup Event Configuration is Retained by Battery Power........................................155
Register Block ............................................................................................................156




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