User`s manual

Chassis Overview 17
2.3.4 Peripheral Slots
There are 18 peripheral slots in PXIS-2719 (including the Star
Trigger controller slot). Each peripheral slot can accommodate a
3U PXI/CompactPCI peripheral module.
Note: DO NOT install a 3U CompactPCI module with rear I/O
function in the PXIS-2719 chassis.
Figure 2-1: PXI Bus Signal Routing
2.3.5 Local Bus
The local bus on a PXI backplane is a daisy-chained bus that con-
nects each peripheral slot with its adjacent peripheral slots to the
left and right. Each local bus has 13 lines and can transmit analog
or digital signals between modules. It can also provide a high-
speed side-band communication path that does not affect the PCI
bandwidth.
In accordance with the PXI specification, the local bus connects all
adjacent slots except slots 1 and 2.
10 MHz Clock and Buffer Circuitry
PXI Trigger Bus Segment and PCI Bus Segment
System Controller
1
Star Trigger Controller
2
Peripheral Slot
3
Local Bus
Peripheral Slot
4
Local Bus
Peripheral Slot
5
Local Bus
Peripheral Slot
6
Local Bus
Peripheral Slot
7
Local Bus
Peripheral Slot
8
Local Bus
Peripheral Slot
9
Local Bus
Peripheral Slot
10
Local Bus
Peripheral Slot
11
Local Bus
Peripheral Slot
12
Local Bus
Peripheral Slot
13
Local Bus
Peripheral Slot
14
Local Bus
Peripheral Slot
15
Local Bus
Peripheral Slot
16
Local Bus
Peripheral Slot
17
Local Bus
Peripheral Slot
18
Local Bus
PXI Trigger Bus Segment and PCI Bus Segment PXI Trigger Bus Segment and PCI Bus Segment
Bridge Bridge