
4
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