PEX8112-AA66BI F

Specialized Overview

The PEX8112-AA66BI F is a PCI Express to PCI bridge manufactured by Broadcom Limited. It supports forward and reverse bridging operations within the ExpressLane architecture. The device features a 144-ball BGA package with a standard 1.0 mm pitch measuring 13mm x 13mm, or an alternative 161-ball fine pitch option. It operates on a 1.5 V core supply voltage with low power consumption of 400 milliwatts. Configuration is supported via EEPROM with SPI interface and internal 8Kbyte shared RAM. The component includes JTAG support, four GPIO pins, and extensive Power Management Event (PME) support across multiple states.

Specialized Feature Summary

• Supports bidirectional data transfer between PCI Express and legacy PCI buses
• Includes internal memory for configuration and operational buffering
• Provides flexible design options through general-purpose input/output pins
• Integrates comprehensive power management event handling capabilities

Specialized Applications

• Legacy system integration requiring PCI expansion slots
• Industrial control systems operating in extreme temperature environments
• Embedded computing platforms with strict power constraints

Specialized Procurement Notes

Verify the specific suffix 'F' against official datasheets to confirm lead-free packaging status and industrial temperature range compliance. Ensure the selected package variant matches the required pin count and pitch dimensions for the target PCB layout. Confirm RoHS directives alignment before finalizing procurement orders.

Specialized Selection Notes

Select this component when designing systems that require reversible bridging between PCIe and PCI domains. Consider the 144-ball BGA footprint for standard pitch requirements or the 161-ball variant for space-constrained designs. Evaluate the 400mW power dissipation against thermal management capabilities in enclosed industrial enclosures.

Specialized Part Context

This bridge IC belongs to the ExpressLane family developed originally by PLX Technology, now part of Broadcom Limited. It serves as a critical interface solution for maintaining compatibility with older peripheral devices in modern high-speed computing architectures. The series is widely recognized for its low latency and efficient power usage in embedded applications.

Specialized Replacement Considerations

The PEX8111 is a related single-lane variant within the same product family. Designers should verify pinout compatibility and functional differences regarding lane width before substituting components in existing hardware designs.