Site Preparation Guide, Fourth Editon - HP Integrity rx7620 Server

Chapter 1
Introduction
Overview
5
of these high-speed bi-directional rope links for a total aggregate bandwidth of approximately 4 GB/sec. Each
LBA acts as a bus bridge, supporting either one or two ropes and capable of driving 33 Mhz or 66 Mhz for PCI
cards. The LBAs can also drive at 66 Mhz or 133 Mhz for PCI-X cards.
Figure 1-4 PCI-X Board to Cell Board Block Diagram
NOTE PCI-X slots 1-7 are dual rope slots while slot 8 is a single rope slot. A rope is defined as a high
speed point to point data bus.
The PCI-X backplane is the primary I/O interface for HP Integrity rx7620 Server systems. It provides sixteen
64-bit, hot-plug PCI/PCI-X slots. Fourteen of the slots have dual ropes connected to the LBA chips. The
remaining two slots have a single rope connected to each LBA chip. Each of the sixteen slots are capable of
66MHz/33MHz PCI or 133MHz/66MHz PCI-X. All sixteen PCI slots are keyed for 3.3 volt connectors
(accepting both Universal and 3.3 V cards). The PCI-X backplane does not provide any 5 volt slots for the I/O
cards. See Table 1-1 for more details.
The PCI-X backplane is physically one board but behaves like two independent partitions. SBA 0 and its
associated LBAs and eight PCI-X slots form one I/0 partition. SBA 1 and its associated LBAs and eight PCI-X
slots form the other I/0 partition. One I/O partition can be powered down separately from the other I/O
partition.
PCI Slot 8LBA 1
Cell
Controller
(CC)
Cell Board
PCI Slot 7LBA 2
PCI Slot 6LBA 4
PCI Slot 5LBA 6
PCI Slot 4LBA 14
PCI Slot 3LBA 12
PCI Slot 2LBA 10
PCI Slot 1LBA 8
System Bus
Adapter (SBA)
System
LBA
Backplane
Adapter (SBA)
System Bus
PCI Slot 8LBA 1
PCI Slot 2
PCI Slot 1
PCI Slot 3
LBA 8
LBA 10
LBA 12
PCI Slot 4
PCI Slot 5
PCI Slot 6
PCI Slot 7
LBA 4
LBA 6
LBA 14
LBA 2
LBA
Controller
Cell Board
Cell
(CC)