Description............................................................................................................................... 123
RUN STATE GPIO DATA REGISTER ACCESS................................................................ 123
GPIO OPERATION.................................................................................................................. 127
8042 KEYBOARD CONTROLLER DESCRIPTION................................................................... 130
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...................................................................................................... 154
Register Description................................................................................................................. 154
Wakeup Event Configuration is Retained by Battery Power ...................................... 156
Register Block......................................................................................................................... 156
ACPI REGISTERS ................................................................................................................... 157
CONFIGURATION........................................................................................................................... 168
SYSTEM ELEMENTS.................................................................................................................. 168
Entering the Configuration State........................................................................................ 149
Exiting the Configuration State .......................................................................................... 149
CONFIGURATION SEQUENCE............................................................................................ 149
CONFIGURATION REGISTERS................................................................................................... 172
Chip Level (Global) Control/Configuration Registers [0x00-0x2F]............................ 176
Logical Device Configuration/Control Registers [0x30-0xFF].................................... 179
Logical Device Registers...................................................................................................... 179
I/O Base Address Configuration Register........................................................................ 181
Interrupt Select Configuration Register ........................................................................... 183
DMA Channel Select Configuration Register.................................................................. 184
SMSC Defined Logical Device Configuration Registers .............................................. 185
Parallel Port, Logical Device 3 ............................................................................................ 188
Serial Port 1, Logical Device 4 ............................................................................................ 189
Serial Port 2, Logical Device 5 ............................................................................................ 191
RTC, Logical Device 6 ........................................................................................................... 192
KYBD, Logical Device 7........................................................................................................ 193
Auxiliary I/O, Logical Device 8 ............................................................................................ 194
ACPI, Logical Device A ......................................................................................................... 212
OPERATIONAL DESCRIPTION ................................................................................................... 218
MAXIMUM GUARANTEED RATINGS ...................................................................................... 218
DC ELECTRICAL CHARACTERISTICS................................................................................... 218
4
SMSC [ SMSC CORPORATION ]
