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2 System Board
The Input/Output Controller Hub (82801AA)
The following devices are connected to the SMBus:
• LCD status panel.
• One Serial EEPROM MaxiLife (also includes backup values of CMOS
settings).
• PCI slot 5, thus being ready for Alert-On LAN (AOL) from a hardware
level.
• ICH SMBus Master Controller 100 kHz maximum.
• MaxiLife for hardware management, bus master controller.
• One LM75 thermal sensor on the system board.
• One ADM1024 hardware monitoring sensor.
• RIMM or DIMM serial EEPROM.
I840 Memory
Controller Hub
(MCH)
I/O Controller Hub
(ICH) 82801AA
MaxiLife
Monitoring
Chip
Serial
EEPROM
SMBus
2 x USB
Controller
LCD
Status
Panel
Host (also called FSB)
Bus 100/133 MHz,
HUB LINK 8
(233 MB/s data
transfer rate)
SM Bus
Controller
Fans
Intel Pentium III
Processor
I/O Controller Hub
(ICH) 82801AA
PCI BridgeIDE
Controller
DMA
Controller