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PEX8509 Datasheet(PDF) 3 Page - AVAGO TECHNOLOGIES LIMITED |
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PEX8509 Datasheet(HTML) 3 Page - AVAGO TECHNOLOGIES LIMITED |
3 / 4 page Adapter Card Aggregation The number and variety of PCI Express native-mode devices is growing quickly. As these devices become mainstream, it will be necessary to create multi-function and multi-port adapter cards with PCI Express capability. The PEX 8509 can be used to create an adapter or mezzanine card that aggregates the PCI Express devices into a single port that can be plugged into a backplane or a motherboard. Figure 3 shows the PEX 8509 in this application. www.plxtech.com Figure 3. Aggregation Adapter Card Control Plane Application The PEX 8509 is ideal for migrating existing PCI control planes in routers to high-speed PCI Express interface to meet increased packet processing needs. Figure 4 shows a controller card with a PEX 8509 connecting the Control Processor to as many as seven line cards each via a x1 port. This usage model provides connectivity to multiple line cards giving the processor control over a large number of line cards in mid- range routers. Figure 4. Control Plane Control Planes For Larger Systems Two PEX 8509 devices can be linked together to provide up to 14 ports, for larger systems that need more than eight ports. Figure 5 shows such an application. The two PEX 8509 devices together provide connectivity for up to 13 line cards each via an x1 link. The Control Processor connected to a PEX 8509 via an x1 port on the controller card in this example can control up to 13 different line cards. Controller Card Controller Card Control Processor Memory PEX 8509 To Line Cards PEX 8509 7 ports 6 ports Controller Card Controller Card Control Processor Memory PEX 8509 PEX 8509 To Line Cards PEX 8509 PEX 8509 7 ports 6 ports GE GE GE 1 1 4 1 1 GE PEX 8509 MAC/PHY MAC/PHY MAC/PHY MAC/PHY GE GE GE 1 1 4 1 1 GE PEX 8509 PEX 8509 MAC/PHY MAC/PHY MAC/PHY MAC/PHY Figure 5. Control Plane for Large Systems Redundant Control Plane Applications For those systems that need redundant control planes, the PEX 8509 can be used in conjunction with the PEX 8508 which supports Non-Transparent bridging. With the NT port, the PEX 8508 can connect to a redundant control card providing fail-over support. An added benefit of the PEX 8509 & PEX 8508 combination design is the increased fan-out capability – it is now possible to connect a total of nine line cards to the controller card. Line Card 1 Line Card 7 Controller Card Controller Card Co-Processor- Security/DSP Local Processor NPU/ASIC Framer PHY Control Processor Memory PEX 8509 Switch Up to 7 x1 cards Line Card 1 Line Card 7 Controller Card Controller Card Co-Processor- Security/DSP Local Processor NPU/ASIC Framer PHY Control Processor Memory PEX 8509 PEX 8509 Switch Switch Up to 7 x1 cards Control Processor Memory PEX 8508 PEX 8509 Controller Card Control Processor Memory PEX 8508 Port #1 Redundant Control Card NTB PEX 8509 Port #9 To Line Cards To Line Cards LC #9 LC #1 Switch Switch Switch Switch Fabric Card GE Ports to Fabric Control Processor Memory PEX 8508 PEX 8508 PEX 8509 PEX 8509 Controller Card Control Processor Memory PEX 8508 PEX 8508 Port #1 Redundant Control Card NTB PEX 8509 PEX 8509 Port #9 To Line Cards To Line Cards LC #9 LC #1 Switch Switch Switch Switch Switch Switch Switch Switch Fabric Card GE Ports to Fabric Figure 6. Redundant Control Plane |
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Similar Description - PEX8509 |
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