National Instruments NI PXIe-1075 System Controller Slot, Hybrid Peripheral Slots

Chapter 1 Getting Started
© National Instruments Corporation 1-7 NI PXIe-1075 User Manual
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 each of the system slots’ x4 PCI Express (PCIe) links
to a PCIe switch. The four (4) PCIe switches have x4 PCIe links routed to
each peripheral slot as well as x1 links to two (2) PCIe-to-PCI bridges
providing 32-bit/33 MHz PCI busses to the hybrid slots. Refer to
Figure 1-3 for the connectivity of PCIe and PCI.
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 rear of the chassis must be in the Default position
for the system controller to have control of the power supply. Refer to the Inhibit Mode
Switch section of Chapter 2, Installation and Configuration, for details about the Inhibit
Mode switch.
Hybrid Peripheral Slots
The chassis provides eight hybrid peripheral slots as defined by the PXI-5
PXI Express Hardware Specification: slots 2–5 and slots 15���18. A hybrid
peripheral slot can accept the following peripheral modules:
• A PXI Express Peripheral with x4 or x1 PCI Express link to the system
slot or through a PCIe switch to the system slot.
• A CompactPCI Express Type-2 Peripheral with x4 or x1 PCI Express
link to the system slot or through a 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 full PXI Express functionality and
32-bit PXI functionality except for PXI Local Bus. The hybrid peripheral
slot only connects to PXI Local Bus 6 left and right.