Texas Instruments PCI2050BPDVG4

Overview

PCI2050BPDVG4 from Texas Instruments is a PCI-to-PCI bridge IC enabling high-performance interconnection between two 32-bit, 66-MHz PCI buses. It supports concurrent bidirectional burst transfers, write combining, and internal two-tier arbitration for up to nine secondary bus masters. The device operates with 3.3-V core logic and universal 3.3-V/5-V tolerant I/Os, targeting embedded industrial systems requiring hierarchical PCI expansion.

For engineers reviewing the PCI2050BPDVG4 datasheet, PCI2050BPDVG4 pinout, PCI2050BPDVG4 application, or PCI2050BPDVG4 equivalent, key selection criteria include 66-MHz timing compliance, CompactPCI hot-swap support, dual-bus latency predictability, and configurable VGA/palette memory decoding - all critical for legacy PCI system upgrades and ruggedized backplane designs.

Technical Context

The PCI2050BPDVG4 implements a fully compliant PCI Local Bus Specification (Rev 2.2) and PCI-to-PCI Bridge Specification (Rev 1.1) architecture. It features independent read/write buffers per direction, frame-to-frame delay of only four PCI clocks, and supports both primary and secondary bus locking propagation.

Its power management adheres to PCI Bus Power Management Interface Specification (Rev 1.1), with programmable low-power states and dedicated PMCSR bridge support registers. JTAG boundary-scan (IEEE 1149.1) and GPIO-controlled secondary clock masking further enable in-system testability and dynamic bus configuration.

Key Specifications

Pinout & Package

The PCI2050BPDVG4 is housed in a 208-pin low-profile quad flat package (PDV) with 0.5-mm pitch, optimized for high-density PCB layouts and thermal reliability in industrial enclosures.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCI-to-PCI bridge applications.

Compared with PLX PCI9052 and Intel 21152, the PCI2050BPDVG4 uniquely integrates CompactPCI hot-swap logic, ten secondary clock outputs, and IEEE 1149.1 JTAG support - making it the only option among the three qualified for certified industrial backplane applications requiring field-replaceable modules and production-level test coverage.

Availability

PCI2050BPDVG4 is available at Aetrix Electronics and suitable for industrial backplane expansion, CompactPCI hot-swap card development, and legacy PCI system upgrade projects requiring stable component supply and long-term lifecycle support.

Supply support for PCI2050BPDVG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.

The PCI2050BPDVG4 belongs to TI's Connectivity Solutions portfolio, engineered specifically for robust, standards-compliant PCI infrastructure in mission-critical embedded systems where reliability, thermal stability, and long-term availability are mandatory.

FAQ

What is the maximum supported PCI bus frequency for the PCI2050BPDVG4?

The PCI2050BPDVG4 supports operation at up to 66 MHz on both primary and secondary PCI buses, meeting PCI Local Bus Specification Rev 2.2 timing requirements. Its internal architecture maintains predictable latency and signal integrity at this rate, with AC parameters validated per Section 6.4–6.5 of the SCPS076G datasheet. This enables full bandwidth utilization in high-throughput applications such as medical imaging and industrial data acquisition.

Does the PCI2050BPDVG4 support both 3.3-V and 5-V PCI signaling environments?

Yes, the PCI2050BPDVG4 features universal PCI I/Os tolerant of both 3.3-V and 5-V signaling levels, allowing direct connection to mixed-voltage PCI slots without level-shifting circuitry. Its 3.3-V core logic operates independently, ensuring low power consumption while maintaining compatibility with legacy 5-V add-in cards and modern 3.3-V systems - a key requirement for phased infrastructure upgrades.

How many secondary PCI clock outputs does the PCI2050BPDVG4 provide?

The PCI2050BPDVG4 provides ten dedicated secondary PCI clock outputs (S_CLKOUT0 through S_CLKOUT9), each capable of driving one downstream PCI device at 33 MHz or 66 MHz. These outputs eliminate the need for external clock fanout buffers and simplify timing design in multi-slot CompactPCI systems, directly supporting the full complement of devices permitted on a secondary bus per PCI specification.

Is the PCI2050BPDVG4 compatible with CompactPCI hot-swap standards?

Yes, the PCI2050BPDVG4 implements CompactPCI hot-swap functionality per PICMG Specification Rev 1.0, including HS_ENUM, HS_LED, and HSSWITCH/GPIO3 signals for mechanical insertion detection, LED status indication, and controlled power sequencing. This hardware-level support enables certified hot-swap behavior without requiring additional FPGA or microcontroller intervention in the card design.

What package type is used for the PCI2050BPDVG4?

The PCI2050BPDVG4 uses a 208-terminal low-profile quad flat package (PDV) with 0.5-mm pitch and RoHS-compliant lead-free finish. This package is mechanically and electrically identical to the PPM variant but optimized for automated assembly and thermal performance in convection-cooled industrial enclosures, as documented in Section 2 and Table 2−1 of the SCPS076G manual.