IBM E1-700, Manual

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PCI adapters slot priorities for the 58/02 and 58/77 expansion units
Learn about the PCI Express (PCIe) slots in the 58/02 and 58/77 expansion units.
System description
The 58/02 and 58/77 expansion units are 19-inch, rack-mountable, I/O expansion drawers that are
designed to be attached to the system using 12X double data rate (DDR) cables.
The expansion units can accommodate 10 generation-3 cassettes. These cassettes can be installed and
removed without removing the drawer from the rack. The expansion units do not support I/O processor
(IOP) adapters.
Note:
Extra-high bandwidth, PCIe2 adapters are not supported in the 58/02 and 58/77 expansion units.
Table 9. Location code descriptions . This table describes the location codes that are shown in Figure 4.
Location code I/O chip PCI host bridge (PHB) Description
P1-C1 I/O chip 1 PHB1 PCIe x8 slot
P1-C2 PHB2
P1-C3 PHB3
P1-C4 I/O chip 2 PHB4
P1-C5 PHB5
P1-C6 PHB6
P1-C7 I/O chip 3 PHB7
P1-C8 PHB8
P1-C9 PHB9
P1-C10 PHB10
Slot priority
The slot priority for all adapters is P1-C1, P1-C4, P1-C2, P1-C5, P1-C3, P1-C6, P1-C7, P1-C8, P1-C9, and
P1-C10.
There are three I/O chips. Each I/O chip controls three or 4 PCI host bridges (PHBs) and each PCIe slot
connects directly to a PHB.
v One I/O chip controls slots P1-C1, P1-C2, and P1-C3.
Figure 4. Rear view. This figure shows the rear view of the expansion unit.
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PCI adapter placement for the 31E/2B, 31E/1C, or 31E/2C