PCI2050BPPM

Specialized Overview

The PCI2050BPPM is a PCI-to-PCI bridge controller manufactured by Texas Instruments, designed to connect two peripheral component interconnect (PCI) buses. It supports a maximum bus frequency of 66 MHz and operates with a 32-bit data bus width. The device functions as a bridge between a primary and secondary PCI bus, enabling transaction transfers between masters on one bus and targets on the other. It utilizes advanced submicron CMOS technology for low power consumption and includes features such as internal arbitration and support for burst mode transfers.

Specialized Feature Summary

• Supports high-performance connection paths between two 32-bit 66MHz PCI buses
• Features internal two-level arbitration for up to nine secondary bus masters
• Provides independent read/write buffers in each direction to maximize data throughput
• Includes CompactPCI hot-plug extension capabilities for versatile card designs

Specialized Applications

• Creating hierarchical bus architectures to overcome electrical load limits
• Designing CompactPCI cards requiring hot-plug functionality
• Connecting multiple PCI expansion slots in industrial or embedded systems

Specialized Procurement Notes

Verify the specific suffix PPM against the official datasheet to confirm package type and temperature range. Ensure compatibility with 3.3V and 5V PCI signal environments as specified in the technical documentation. Cross-reference the manufacturer part number with authorized distributors to confirm current availability and authenticity.

Specialized Selection Notes

Select this component when a PCI-to-PCI bridge solution is required for systems operating at frequencies up to 66 MHz. Consider the 208-lead PPM package for surface mount applications. Evaluate the need for internal arbitration versus external arbitration based on the number of secondary bus masters in the design.

Specialized Part Context

The PCI2050B series is part of Texas Instruments' portfolio of interface ICs focused on PCI connectivity. This bridge chip addresses the limitation of ten devices per PCI bus by allowing additional devices to be connected via a secondary bus. It is distinct from earlier models like the PCI2050 by offering enhanced features and compliance with updated PCI local bus specifications.

Specialized Replacement Considerations

The PCI2050BPDV is a documented alternative within the same family, though it may have different packaging or end-of-life status. Verify pinout compatibility and electrical characteristics before substituting. Other similar bridges include the Intel 21150 series, but functional equivalence must be confirmed through detailed datasheet comparison.