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1-7
System Controller Slot
The system controller slot is Slot 1 of the chassis and is a 4-Link configuration system slot as
defined by the CompactPCI Express and PXI Express specifications. It has three system
controller expansion slots for system controller modules that are wider than one slot. These slots
allow the system controller to expand to the left to prevent the system controller from using
peripheral slots.
The backplane routes three PCI Express (PCIe) links of the system slot to peripheral slots as
x1 links. The other link of the system slot is routed as a x4 link to the upstream port of a PCI
Express switch that in turn provides x1 PCIe links to the remaining peripheral slots. Refer to
Figure 1-4 for PCI Express and PCI connectivity.
By default, the system controller will control the power supply with the PS_ON# signals. A logic
low on this line will turn the power supply on.
Note
The Inhibit Mode switch on the backplane must be in the
Default
position for
the system controller to have control of the power supply. Refer to the
section of Chapter 2,
Installation and Configuration
, for details about the
Inhibit Mode switch.
Hybrid Peripheral Slots
The chassis provides five hybrid peripheral slots as defined by the
PXI-5 PXI Express Hardware
Specification
: slots 5-9. A hybrid peripheral slot can accept the following peripheral modules:
•
A PXI Express Peripheral with a x1 PCI Express link through the PCIe switch to the system
slot
•
A CompactPCI Express Type-2 Peripheral with a x1 PCI Express link through the PCIe
switch to the system slot
•
A hybrid-compatible PXI Peripheral module that has been modified by replacing the
J2 connector with an XJ4 connector installed in the upper eight rows of J2. Refer to the
PXI Express Specification
for details. The PXI Peripheral communicates through the
backplane’s 32-bit PCI bus.
•
A CompactPCI 32-bit peripheral on the backplane’s 32-bit PCI bus
The hybrid peripheral slots provide PXI Express functionality (excluding DSTAR and PXI Star)
and 32-bit PXI functionality except for PXI Local Bus. The hybrid peripheral slot only connects
to PXI Local Bus 6 left and right.
PXIe1078UM.book Page 7 Monday, December 23, 2019 10:44 AM
