PCI2050BGHK

Specialized Overview

The Texas Instruments PCI2050BGHK is a PCI-to-PCI bridge controller designed to interconnect two peripheral component interconnect (PCI) buses. It supports dual 32-bit, 66-MHz PCI bus architectures, enabling high-performance data transfer between primary and secondary bus segments. The device operates within an industrial temperature range of -40°C to +85°C and utilizes a 257-terminal MicroStar BGA package. Key electrical parameters include a maximum clock frequency of 66 MHz and compatibility with both 3.3V and 5V PCI signaling environments through its universal interface logic.

Specialized Feature Summary

• Supports simultaneous bridging transactions across two independent 32-bit, 66-MHz PCI bus paths
• Features internal two-level arbitration for up to nine secondary bus masters with external arbiter support
• Enables CompactPCI hot-plug functionality for system expansion flexibility
• Provides independent read/write buffers in each direction to maximize data throughput

Specialized Applications

• CompactPCI system backplane interconnection
• PCI bus fan-out and load isolation
• Hot-pluggable peripheral expansion systems
• Industrial control systems requiring extended temperature operation

Specialized Procurement Notes

Verify the specific suffix HK against official Texas Instruments documentation to confirm pinout, package dimensions, and thermal characteristics. Ensure the procurement source provides valid RoHS compliance certificates and original manufacturer traceability. Cross-reference the ordering part number with the latest datasheet revision to avoid obsolete variants.

Specialized Selection Notes

Select this component when designing systems requiring strict compliance with PCI Local Bus Specification and PCI-to-PCI Bridge Specification revisions. Consider the 257-terminal BGA package constraints during PCB layout. Evaluate the need for external arbitration if more than nine secondary masters are present. Verify voltage domain compatibility for mixed 3.3V and 5V signaling environments.

Specialized Part Context

The PCI2050B series serves as a high-performance bridge solution within Texas Instruments' interface IC portfolio. It addresses electrical load limitations by creating hierarchical bus structures. The BGHK variant specifically denotes the industrial temperature grade and MicroStar BGA packaging format, distinguishing it from commercial grade or LQFP packaged alternatives in the same family.

Specialized Replacement Considerations

Publicly confirmed direct substitutes are not available in the provided reference material. Designers should evaluate the Intel 21150 series or TI's own PCI2040/PCI2250 families for functional similarities, but must verify register compatibility and pinout alignment before implementation.