55
2 System Board
The Input/Output Controller Hub (82801AA)
Devices on the PCI 32-bit 33 MHz Bus
The following devices are connected to the PCI 32-bit 33 MHz bus.
PCI 32-bit/33 MHz Slots
There are five 32-bit/33 MHz PCI slots accepting 5 V PCI cards and Universal
PCI cards (support for 3.3 V or 5 V). A LAN card is installed in PCI Slot 5.
On some models, a SCSI controller card is installed in PCI Slot 4. PCI slots
are explained in detail on
page 38
.
820 Memory
Controller Hub
(MCH) 82820
Audio PCI
Chip
(CSA4280)
I/O Controller Hub
(ICH) 82801AA
2 x USB
Controller
Host (also called
FSB) two-way Bus
100/133 MHz,
HUB LINK 8
(266 MB/s data
transfer rate)
SM Bus
Controller
PCI Bus (32-bit, 33 MHz)
133 MB/s data transfer rate
MIDI
Port
Intel Pentium III
Processor
I/O Controller Hub
(ICH) 82801AA
PCI Bridge
IDE
Controller
DMA
Controller
Slot 1 - 32-bit/33 MHz
Slot 2- 32-bit/33 MHz
Slot 3 - 32-bit/33 MHz
Slot 4 - 32-bit/33 MHz
Slot 5 - 32-bit/33 MHz
Codec
Audio AC‘97
AC ‘97
Digital
Link
