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PEX8613-BA50BCG Datasheet(PDF) 3 Page - PLX Technology |
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PEX8613-BA50BCG Datasheet(HTML) 3 Page - PLX Technology |
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3 / 4 page  Memory Memory Memory Memory PEX 8613 PEX 8613 PEX 8613 PEX 8613 x4 x4 x16 x16 Endpoint Endpoint CPU CPU CPU CPU CPU CPU CPU CPU Chip Set Chip Set Chip Set Chip Set x4 Figure 3. Fan-in/out Usage Network Interface Cards The PEX 8613 can also be utilized in communications applications such as Network Interface Cards (NICs). NICs, like the one shown in Figure 4, can utilize the PEX 8613 for its fan-out capabilities. In the example below, the PEX 8613 is being used on a Dual-port 10- Gigabit Ethernet (GE) NIC card. The PEX 8613 utilizes a x4 link to connect to the host and two x4 downstream links to fan-out to the 10GE ports. The peer-to-peer communication feature of the PEX 8613 allows the endpoints to communicate with each other without any intervention or management by the host. Dual-Port NIC Dual-Port NIC 10 GE MAC/PHY MAC/PHY x4 x4 x4 PEX 8613 PEX 8613 PEX 8613 PEX 8613 10 GE Figure 4. 10GE NIC Fan-Out Embedded Systems The PEX 8613 is well suited for embedded applications as well. Embedded applications, like the example shown in Figure 5, commonly use a number of independent modules for functions such as control plane processing, data acquisition, or image processing to name a few possibilities. Figure 5 represents an embedded system utilizing a PEX 8613 to fan-out to two ASICs/FPGAs. FPGA FPGA ASIC ASIC PEX 8613 PEX 8613 PEX 8613 PEX 8613 CPU CPU CPU CPU CPU CPU CPU CPU memory Chipset Chipset Figure 5. Embedded Systems Failover Storage Systems The PEX 8613’s Dual Cast feature proves to be very useful in storage systems. In the example shown in Figure 6, the Dual Cast feature enables the PEX 8613 to copy data coming from the host to two downstream ports (see yellow traffic patterns) in one transaction as opposed to having to execute two separate transactions to send data to the backup chassis. By offloading the task of backing up data onto the secondary system, processor and system performance is enhanced. PEX 8613 PEX 8613 8 Disk Chassis FC FC x4 x4 FC FC PEX 8613 PEX 8613 8 Disk Chassis FC FC x4 x4 FC FC PEX 8613 PEX 8613 PEX 8613 PEX 8613 8 Disk Chassis FC FC x4 x4 FC FC PEX 8613 PEX 8613 8 Disk Chassis FC FC x4 x4 FC FC PEX 8613 PEX 8613 PEX 8613 PEX 8613 CPU CPU CPU CPU CPU CPU CPU CPU Memory Memory Chipset Chipset Figure 6. Dual Cast in Storage Systems |
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