Compaq 108164-003 - ProLiant - 800 Integration Notes page 7

PCI Bus Numbering in a Microsoft Windows NT Environment
SDRAM
DIMMs
33MHz/32-bit
PCI slot
Figure 2. Highly parallel PCI bus architecture in the ProLiant ML530
Figure 3. Triple-peer PCI bus architecture in the ProLiant 8000
PCI bridges are not limited to the computer system; controllers can include them also. Hardware
manufactures such as Compaq include PCI bridges on controllers to help with signal integrity,
enabling more devices to be added per system. Data transfers from the host bus, through the
primary PCI bus, through the PCI-to-PCI bridge on the controller, and finally to the PCI device.
For example, an intelligent device such as a Smart Array 4250ES Controller contains a PCI
bridge.
13UK-1200A-WWEN
Pentium III
Xeon
133MHz
RCC 3.0
133MHz
controller
66MHz/64-bit
PCI slots
Pentium III
Xeon
RCC 3.0
133MHz
controller
SDRAM
DIMMs
33MHz/64-bit
PCI slots
7