PEX8311-AA66BC F

Specialized Overview

The PEX8311-AA66BCF is a PCI Express to Generic Local Bus Bridge manufactured by Broadcom Limited. It facilitates interconnection between a generic local bus and a PCI Express port, supporting Root Complex and EndPoint modes of operation. The device features a single-lane PCI Express interface with an integrated SerDes. It supports local bus clock rates up to 66 MHz and provides two DMA channels for data transfer. The component operates at 3.3V I/O levels with 5V tolerant local bus inputs. It is housed in a 21mm x 21mm, 337-pin PBGA package.

Specialized Feature Summary

• Supports Root Complex and EndPoint operational modes for flexible system integration
• Enables migration from legacy local buses to scalable high-bandwidth PCI Express interconnects
• Provides zero wait state bursts for efficient data throughput

Specialized Applications

• Communication line cards
• Surveillance systems
• Video capture cards
• Industrial control systems
• Medical imaging equipment

Specialized Procurement Notes

Verify the specific suffix AA66BCF against official datasheets to confirm pinout compatibility and electrical characteristics. Ensure the supplier provides documentation confirming RoHS compliance and lead-free status as specified for this variant. Cross-reference the manufacturer part number with current Broadcom or PLX Technology records to validate authenticity and revision history before procurement.

Specialized Selection Notes

Select this bridge when interfacing 32-bit address and data local buses to PCIe endpoints. Consider the 66 MHz local bus clock limit and single-lane PCIe bandwidth requirements. Evaluate power consumption constraints, noting the typical 1.0 Watt usage. Verify that the 337-pin PBGA package fits the target PCB footprint and thermal design specifications.

Specialized Part Context

This component belongs to the ExpressLane family of PCI Express bridges originally developed by PLX Technology, now part of Broadcom. These devices are designed to replace legacy PCI controllers in embedded systems, allowing designers to integrate modern PCIe connectivity without redesigning the entire local bus architecture.

Specialized Replacement Considerations

Check for updated revisions within the PEX8311 series. Verify if newer Broadcom bridge models offer enhanced lane counts or higher clock speeds suitable for the application.