HP KAYAK XU800 manual QKP aUJp, ½½t, Lquu a½rzt, ‘QUU a½rzt, ILU6579, Atp MMX‘WU, TU= bt¼tp, At½

7 a• J½p

The Input/Output Controller Hub (82801AA)

QKP aUJp	The ICH provides a processor-to-SMBus controller. All access performed to
K½”½““t	the SMBus is done through the ICH SMBus interface. Typically, the
	processor has access to all the devices connected to the SMBus.
LQUU a½rzt	Each DIMM socket is connected to the SMBus. The 168-pin DIMM modules
	include a 256 byte I2C Serial EEPROM. The first 128 bytes contain general
	information, including the DRAM chips’ manufacturer name, DIMM speed
	rating, DIMM type, etc. The second 128 bytes of the Serial EEPROM can be
	used to store data online.
‘QUU a½rzt	Each RIMM socket is connected to the SMBus. The 168-pin RIMM modules
	include a 256 byte I2C Serial EEPROM. The first 128 bytes contain general
	information, including the DRAM chips’ manufacturer name, RIMM speed
	rating, RIMM type, etc. The second 128 bytes of the Serial EEPROM can be
	used to store data online.
ILU6579	The ADM1024 chip is a hardware monitoring sensor dedicated to the
	processor temperature. This chip uses the thermal diodes integrated into
	each processor cartridge and makes the temperature information available
	through the SMBus. It also monitors processor power supply voltages.
atp“ MMX‘WU	This is the non-volatile memory which holds the default values for the CMOS
	memory (in the event of battery failure).When installing a new system
	board, the Serial EEPROM will have a blank serial number field. This will be
	detected automatically by the BIOS, which will then prompt the user for the
	serial number which is printed on the identification label on the back of the
	PC Workstation. The computer uses 16KBytes of Serial EEPROM
	implemented within two chips. Serial EEPROM is ROM in which one byte at
	a time can be returned to its unprogrammed state by the application of
	appropriate electrical signals. In effect, it can be made to behave like very
	slow, non-volatile RAM. It is used for storing the tatoo string, the serial
	number, and the parameter settings for the l	program as well as
	MaxiLife firmware.
TU=: bt•¼tp	The LM75 temperature sensor and alarm are located on the system board.
at”½	The sensor is used to measure the temperature in various areas of the
	system board. This information is used to regulate fans.

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