The Input/Output Controller Hub (82801Aa) - HP XM600 - Kayak - 128 MB RAM Technical Reference Manual

2 System Board

The Input/Output Controller Hub (82801AA)

The Input/Output Controller Hub (82801AA)
Address (36)
Control
Data (64)
2 IDE
Connectors
2 USB
Connectors
Keyboard,
Super I/O
Mouse and
NS 87364
Floppy
Parallel and
Serial Ports
48
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.
ATA 66, 2 Channels
USB
LPC / FWH Link
FirmWare Hub
(FWH)
82802
Intel Pentium III
Processor
with L2 cache memory
820 Memory
Controller Hub
(MCH)
82820
HUB LINK 8
(233 MB/s data
transfer rate)
I/O Controller Hub I/O Controller Hub
(ICH) 82801AA (ICH) 82801AA
IDE
Controller
PCI Bridge
2 x USB
Controller
SM Bus
DMA
Controller
Controller
MaxiLife
Monitoring
Serial
Chip
EEPROM
Host (also called FSB) two-
way Bus 100/133 MHz,
PCI Bus (32-bit, 33 MHz)
133 MB/s data transfer rate
Slot 1 - 32-bit/33 MHz
Slot 2- 32-bit/33 MHz
Audio PCI
Slot 3 - 32-bit/33 MHz
Chip
Slot 4 - 32-bit/33 MHz
(CSA4280)
Slot 5 - 32-bit/33 MHz
Fans
MIDI
Port
LCD
Status
Panel
AC '97
Digital
Link
Codec
Audio AC'97