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Chapter 1
Getting Started
PXI Express Peripheral Slots
There are three PXI Express peripheral slots: slots 2-4. PXI Express peripheral slots can accept
the following modules:
•
A PXI Express peripheral with a x1 PCI Express link to the system slot
•
A CompactPCI Express Type-2 peripheral with a x1 PCI Express link to the system slot
PXI Local Bus
The PXI backplane local bus is a daisy-chained bus that connects each peripheral slot with
adjacent peripheral slots to the left and right.
The backplane routes PXI Local Bus 6 between adjacent PXI slots. The left Local Bus 6 from
slot 1 is not routed anywhere. The right Local Bus 6 from slot 9 also is not routed anywhere.
Local bus signals may range from high-speed TTL signals to analog signals as high as 42 V.
Initialization software uses the configuration information specific to each adjacent peripheral
module to evaluate local bus compatibility.
Figure 1-5.
PXI Trigger Bus Connectivity Diagram
H
H
H
H
1
2
3
4
5
6
7
8
9
H
PCIe/PCI
Bridge
PLX
PEX
8
614
PCIe
S
witch
0
7
9
1
Link #1
x1
5
14
12
x1
x1
x1
x1
x1
x1
x1
Link #2
Link #4
Link #
3
3
2
b
it,
33
MHz PCI B
us
x1
x4
PXIe1078UM.book Page 8 Monday, December 23, 2019 10:44 AM
