PXIe Embedded Controller and Chassis Performance

Hardware: PXI/CompactPCI>>Controllers

Problem:
I have am looking into buying a PXIe chassis and controller. How do the PXIe chassis affect the speed of the controllers and boards.

Solution:
With the current PXIe technology, the speed at which the modules can communicate depends on both the chassis and the controller. In the table bellow, a description of the available links in the chassis and the controllers can be seen.

Controller	Available PCIe Links	Aggregate Bandwidth	PXIe-1062	PXIe-1065	PXIe-1075
PXIe-8103	Four(4) x1 Links	~1 GB/s	Slots 3-5 direct x1 links Dedicated x1 for PCIe/PCI bridge	Slots 7,8 direct x1 links Slots 9-14 share x1 link x1 link for primary PCIe/PCI bridge x1 link for secondary bridge (connected through PCIe switch)	Slots 2-5 share x1 link Slots 6-9 share x1 link Slots 10-13 share x1 link Slots 14-18 share x1 link x1 link for primary PCIe/PCI bridge (connected through PCIe 2-5switch) x1 link for secondary bridge (connected through PCIe 14-18 switch)
PXIe-8105	One(1) x4 Link distributed to three(3) x4 links through PCIe switch on the controller One(1) x1 Link	~1.25 GB/s	Slots 3-5 direct x4 links Dedicated x1 for PCIe/PCI bridge	Slots 7,8 direct x4 links Slots 9-14 share x4 link x1 link for primary PCIe/PCI bridge x1 link for secondary bridge (connected through PCIe switch)	Slots 2-5 share x4 link Slots 6-9 share x4 link Slots 10-13 share x4 link Slots 14-18 share x1 link x1 link for primary PCIe/PCI bridge (connected through PCIe 2-5 switch) x1 link for secondary bridge (connected through PCIe 14-18 switch)
PXIe-8106	One(1) x4 Link distributed to three(3) x4 links through PCIe switch on the controller One(1) x1 Link	~1.25 GB/s	Slots 3-5 direct x4 links Dedicated x1 for PCIe/PCI bridge	Slots 7,8 direct x4 links Slots 9-14 share x4 link x1 link for primary PCIe/PCI bridge x1 link for secondary bridge (connected through PCIe switch)	Slots 2-5 share x4 link Slots 6-9 share x4 link Slots 10-13 share x4 link Slots 14-18 share x1 link x1 link for primary PCIe/PCI bridge (connected through PCIe 2-5 switch) x1 link for secondary bridge (connected through PCIe 14-18 switch)
PXIe-8130	Four (4) x4 Links	~4 GB/s	Slots 3-5 direct x4 links Dedicated x1 for PCIe/PCI bridge	Slots 7,8 direct x4 links Slots 9-14 share x4 link x1 link for primary PCIe/PCI bridge x1 link for secondary bridge (connected through PCIe switch)	Slots 2-5 share x4 link Slots 6-9 share x4 link Slots 10-13 share x4 link Slots 14-18 share x1 link x1 link for primary PCIe/PCI bridge (connected through PCIe 2-5 switch) x1 link for secondary bridge (connected through PCIe 14-18 switch)

Please refer to the data sheets on the Product Pages for a detailed drawing of the chassis backplane.

Bus Connections in PXIe Chassis

Bus Connection	PCI/PXI	x1 PCIe/PXIe	x4 PCIe/PXIe
Bandwidth	132 MB/s	250 MB/s per direction	1GB/s per direction

Attachments:

Report Date: 06/29/2007
Last Updated: 03/10/2009
Document ID: 4ASA51PS

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