HP Integrity rx7620 Server - User Service Guide, Sixth Edition

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 the 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. For more details, see Table 1-1.
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.
Table 1-1 PCI-X Slot Types
Device
1
SlotI/O Partition
PCI (33 or 66 MHz) / PCI-X (66 or 133 MHz) 64-bit, 3.3V connector, Hot-Plug Slot.80
PCI (33 or 66 MHz) / PCI-X (66 or 133 MHz) 64-bit, 3.3V connector, Hot-Plug Slot.70
PCI (33 or 66 MHz) / PCI-X (66 or 133 MHz) 64-bit, 3.3V connector, Hot-Plug Slot.60
PCI (33 or 66 MHz) / PCI-X (66 or 133 MHz) 64-bit, 3.3V connector, Hot-Plug Slot.50
PCI (33 or 66 MHz) / PCI-X (66 or 133 MHz) 64-bit, 3.3V connector, Hot-Plug Slot.40
20 Introduction