PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
PCIe Devices - PLX Technology
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PCI/PCI-X Primary/Secondary Bus Scheme<br />
Processor Processor Processor<br />
Bus=0<br />
Subor=2<br />
Host/PCI<br />
Bridge 1<br />
Main<br />
Memory<br />
Host/PCI-X<br />
Bridge<br />
Bus=3<br />
Subor=4<br />
PCI Bus 0<br />
PCI/PCI<br />
Bridge<br />
Pri=0<br />
Sec=1<br />
Subor=2<br />
Pri=3<br />
Sec=4<br />
Subor=4<br />
PCI-X/PCI-X<br />
Bridge<br />
PCI Bus 3<br />
Pri=1<br />
Sec=2<br />
Subor=2<br />
PCI/PCI<br />
Bridge<br />
PCI Bus 2<br />
PCI Bus 1<br />
PCI Bus 4<br />
• Primary bus or upstream bus<br />
• Moves transaction towards Host/PCI bridge<br />
• Secondary bus or downstream bus<br />
• moves transaction away from Host/PCI bridge<br />
Copyright by Dashcourses, Inc. 2009<br />
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