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PEX8114-AA13BI

PCI Express to PCI Bridge

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Adapter Boards-Reverse Bridge

The ExpressLane PEX 8114 supports Reverse Transparent

Mode bridging (see Figure 5), enabling state-of-the-art PCI

Express silicon to be used with legacy PCI or PCI-X parallel

busses. Designers can utilize the latest LAN, SAN or NAS I/O

silicon architectures and features while providing the

capability to bridge backwards to widely entrenched legacy

slots and backplanes. Reverse bridging allows the host

processor to reside out on the PCI or PCI-X bus; the bridge

will accept configuration cycles from the PCI/PCI-X side and

manage the local PCI Express interface as a secondary entity

within the PCI software model.

Mezzanine Cards

The small footprint and low power of the ExpressLane PEX

8114 make it ideal for use in mezzanine products based on the

latest PICMG standards for PCI Express (see Figure 6).

Figure 5. Reverse Transparent Mode

Figure 6. Advanced Mezzanine Card and Carrier

Standardized PCI/PCI-X Expansion

The ExpressLane PEX 8114 is the ideal bridge for facilitating remote I/O expansion in computing, communications, or data

acquisition applications (see Figure 7). The PCI SIG cabling specification work for PCI Express technology along with the

ExpressLane PEX 8114 can offer a standards-based extender for the parallel PCI or PCI-X bus. Because the bridge supports reverse

bridging operation, the PCI or PCI-X host system is able to remotely configure the PCI Express link and remote system.

Figure 7. Remote Expansion of PCI/PCI-X-Based Systems

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