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LPC47M112-MW
SMSC -> Microchip
LPC47M112-MW Datasheet PDF : 204 Pages
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Enhanced Super I/O Controller with LPC Interface
Datasheet
17.1 MPU-401 Command Controller ...................................................................................................................80
17.2 MIDI UART ....................................................................................................................................................81
17.3 MPU-401 Configuration Registers ..............................................................................................................81
18 PARALLEL PORT ............................................................................................................................................82
18.1 IBM XT/AT Compatible, Bi-Directional And Epp Modes ...........................................................................83
18.2 Extended Capabilities Parallel Port............................................................................................................88
19 POWER MANAGEMENT..................................................................................................................................99
20 Timing Diagrams for SER_IRQ Cycle ..........................................................................................................102
21 8042 KEYBOARD CONTROLLER DESCRIPTION........................................................................................105
21.1 Latches On Keyboard and Mouse IRQs...................................................................................................111
21.2 Keyboard and Mouse PME Generation ....................................................................................................113
22 GENERAL PURPOSE I/O...............................................................................................................................114
22.1 GPIO Pins ...................................................................................................................................................114
22.1.1 GPIO Operation ..............................................................................................................................................................117
PME ................................................................................................................................................................................................119
22.2 Either Edge Triggered Interrupts..............................................................................................................119
22.3 Led Functionality .......................................................................................................................................119
23 SYSTEM MANAGEMENT INTERRUPT (SMI) ...............................................................................................121
24 PME SUPPORT ..............................................................................................................................................122
24.1 ‘Wake On Specific Key’ Option.................................................................................................................123
25 FAN SPEED CONTROL AND MONITORING ................................................................................................125
25.1 Fan Speed Control .....................................................................................................................................125
25.1.1 FANx Registers...............................................................................................................................................................125
25.1.2 Fan Control Register.......................................................................................................................................................126
25.2 Fan Tachometer Inputs .............................................................................................................................126
PRELOAD .......................................................................................................................................................................................128
26 SECURITY FEATURE ....................................................................................................................................129
26.1 GPIO Device Disable Register Control.....................................................................................................129
26.2 Device Disable Register ............................................................................................................................129
27 GAME PORT LOGIC ......................................................................................................................................130
27.1 Power Control Register .............................................................................................................................131
27.2 VREF Pin.....................................................................................................................................................131
28 RUNTIME REGISTERS ..................................................................................................................................132
29 CONFIGURATION ..........................................................................................................................................156
30 OPERATIONAL DESCRIPTION.....................................................................................................................174
30.1 Maximum Guaranteed Ratings*................................................................................................................174
DC ELECTRICAL CHARACTERISTICS ...................................................................................................................174
31 TIMING DIAGRAMS .......................................................................................................................................177
32 PACKAGE OUTLINE......................................................................................................................................201
33 APPENDIX - TEST MODE ..............................................................................................................................202
33.1 Board Test Mode........................................................................................................................................202
List of Figures
FIGURE 1 - LPC47M112 BLOCK DIAGRAM...............................................................................................................14
FIGURE 2 - MPU-401 MIDI INTERFACE ....................................................................................................................76
FIGURE 3 - MPU-401 INTERRUPT.............................................................................................................................79
FIGURE 4 - MIDI DATA BYTE EXAMPLE ...................................................................................................................81
FIGURE 5 – KEYBOARD LATCH ..............................................................................................................................112
SMSC DS – LPC47M112
Page 4
DATASHEET
Rev. 02-16-07
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