HP KAYAK XU800 manual MX 1GAG9QQ2, Input/Output Controller Hub 82801AA

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The Input/Output Controller Hub (82801AA)

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The ICH, is encapsulated in a 241-pin Ball Grid Array (BGA) package and is located on the system board just underneath the Memory Expansion Card Connector. It provides the interface between the PCI bridge (PCI Rev. 2.2 compliant with support for 32-bit 33 MHz PCI operations), PCI-to-LPC (Low Pin Count) bridge, IDE controller, USB controller, SMBus controller and AC’97 controller.

The ICH functions and capabilities are discussed in detail later on in this section. The following figure shows an example of the system block diagram using the ICH.

		Intel Pentium III
		Processor
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		(ICH)-QKP. 82801AA>7>56II
		IDE		XKQ J872qx1 88 UP
7 QLM	IbI <<1 7 Kwp””t“	Controller	PCI Bridge	688 UJ4spp p”ut t
K½””tr½					AC ‘97
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	caJ				Digital
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		Controller	K½”““t		Kwx¼
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