LPC47M182 SMSC Corporation, LPC47M182 Datasheet - Page 6

• Manufacturer Part Number: LPC47M182
• Description: ADVANCED I/O CONTROLLER WITH MOTHERBOARD GLUE LOGIC
• Manufacturer: SMSC Corporation

7.25
7.26
7.27
7.28
7.29
7.30
7.31
7.32
7.33
7.34
7.35
7.36
7.37
7.38
7.39
7.40
7.41
Chapter 8
Chapter 9
Revision 1.8 SMSC/Non-SMSC Register Sets (02-24-05)
7.25.1
7.25.2
7.25.3
7.25.4
7.25.5
7.25.6
7.25.7
7.25.8
7.25.9
7.25.10
7.25.11
7.25.12
7.25.13
7.25.14
7.25.15
7.25.16
7.25.17
7.25.18
7.25.19
7.26.1
7.26.2
7.27.1
7.27.2
7.27.3
7.27.4
7.27.5
7.27.6
7.28.1
7.29.1
7.29.2
7.30.1
7.30.2
7.31.1
7.31.2
7.31.3
7.31.4
7.37.1
8042 Keyboard Controller Description ......................................................................................... 118
Port 92 Fast Gatea20 and Keyboard Reset................................................................................. 122
General Purpose I/O .................................................................................................................... 127
PME Support................................................................................................................................ 131
Fan Monitoring ............................................................................................................................. 134
Hard Drive and Power LED Logic ................................................................................................ 135
Power Generation (5V) ................................................................................................................ 138
IDE Reset Output Pin................................................................................................................... 139
PCI Reset Output Pins ................................................................................................................. 140
Voltage Translation Circuit........................................................................................................... 140
SMBus Isolation Circuitry ............................................................................................................. 143
PS_ON Logic ............................................................................................................................... 144
PWRGD_PLATFORM Logic ........................................................................................................ 145
SCK_BJT_GATE Output.............................................................................................................. 146
Backfeed Cut and Latched Backfeed Cut Circuitry...................................................................... 147
Resume Reset Logic.................................................................................................................... 152
CNR Logic.................................................................................................................................... 152
Keyboard Interface............................................................................................................................118
Keyboard Data Write.........................................................................................................................119
Keyboard Data Read.........................................................................................................................119
Keyboard Command Write ................................................................................................................119
Keyboard Status Read ......................................................................................................................119
CPU-to-Host Communication ............................................................................................................119
Host-to-CPU Communication ............................................................................................................119
KIRQ .................................................................................................................................................120
MIRQ.................................................................................................................................................120
External Keyboard and Mouse Interface ...........................................................................................120
Keyboard Power Management..........................................................................................................120
Soft Power Down Mode ....................................................................................................................121
Hard Power Down Mode ...................................................................................................................121
Interrupts ...........................................................................................................................................121
Memory Configurations .....................................................................................................................121
Register Definitions ...........................................................................................................................121
External Clock Signal ........................................................................................................................122
Default Reset Conditions ..................................................................................................................122
GATEA20 AND KEYBOARD RESET................................................................................................122
Port 92 Register ................................................................................................................................122
Keyboard and Mouse PME Generation.............................................................................................126
GPIO Pins .........................................................................................................................................127
Description ........................................................................................................................................128
GPIO Control.....................................................................................................................................129
GPIO Operation ................................................................................................................................130
GPIO PME Functionality ...................................................................................................................131
Either Edge Triggered Interrupts .......................................................................................................131
‘Wake on Specific Key’ Option ..........................................................................................................132
Fan Tachometer Inputs .....................................................................................................................134
Detection of a Stalled Fan.................................................................................................................135
Hard Drive Front Panel LED (Red)....................................................................................................135
Yellow and Green Power LED Pins...................................................................................................136
Reference Pins..................................................................................................................................138
5V Main Reference Generation.........................................................................................................138
5V Standby Reference Generation ...................................................................................................139
Reference Timings ............................................................................................................................139
Selecting the Delay ...........................................................................................................................146
Power Control Runtime Registers .................................................................................. 154
GPIO Runtime Registers................................................................................................. 161
DATASHEET
6
Advanced I/O Controller with Motherboard GLUE Logic
SMSC LPC47M182
Datasheet