PI7C9X118SLFDEX

Specialized Overview

The PI7C9X118SL is a PCI Express-to-PCI bridge IC manufactured by Diodes Incorporated. It provides a reversible interface between a PCI Express root complex and legacy PCI peripherals, supporting both forward and reverse bridging modes. The device integrates an 8KB buffer for read and write operations to optimize data throughput. It supports PCIe Gen1 x1 links with data rates up to 2.5 GT/s and operates at supply voltages of 1.0V, 1.8V, and 3.3V. The component features transparent and non-transparent mode capabilities, GPIO support, and compliance with PCI Express Base Specification and PCI/PCI-X Bridge Specifications.

Specialized Feature Summary

• Supports fully reversible bridging between PCI Express and PCI domains
• Integrates large capacity buffers for efficient data handling
• Provides transparent and non-transparent operation modes
• Includes GPIO pins and masquerade support for system customization

Specialized Applications

• Legacy PCI expansion in modern PCIe-based systems
• Industrial control systems requiring mixed bus architectures
• Embedded hardware platforms needing protocol translation

Specialized Procurement Notes

Verify the current status of this part number before design finalization. The datasheet indicates that the PI7C9X118SL has been discontinued. Confirm availability through authorized channels or consider the recommended replacement part to ensure long-term supply stability and compatibility with existing designs.

Specialized Selection Notes

Select this component only if legacy PCI connectivity is required alongside a PCIe host controller. Ensure the design accommodates the specific voltage requirements and pin configurations outlined in the datasheet. Verify that the application does not require higher bandwidth standards than PCIe Gen1 x1 can provide.

Specialized Part Context

This component belongs to the PI7C9X series of interface controllers from Diodes Incorporated (formerly Pericom). These devices are designed to facilitate interoperability between different bus technologies. The PI7C9X118SL specifically addresses the need for backward compatibility in systems transitioning from PCI to PCIe architectures.

Specialized Replacement Considerations

The datasheet explicitly recommends using the PI7C9X111SL as the replacement for the discontinued PI7C9X118SL. Engineers should evaluate the PI7C9X111SL for functional equivalence and pin compatibility to maintain system integrity.