Renesas CA91L862A-50IEV

Overview

CA91L862A-50IEV from Integrated Device Technology is a QSpan II™ Embedded Host Bridge (EHB) IC that implements PCI-to-Local Bus bridging for PowerPC-based systems, operating at 50 MHz with 3.3 V supply and supporting 32-bit PCI address/data interface in a 256-pin PBGA package. It enables MPC860 processor interfacing in industrial control and communications equipment requiring deterministic local bus timing.

For engineers reviewing the CA91L862A-50IEV datasheet, CA91L862A-50IEV pinout, CA91L862A-50IEV application, or CA91L862A-50IEV equivalent, this page provides verified technical context, package mapping, functional specifications, and real-world use cases aligned with IDT's QSpan II documentation and IBIS models.

Technical Context

The CA91L862A-50IEV integrates a PCI target/bridge interface with configurable local bus timing, supports secondary masters on the local bus, and implements PCI 2.1-compliant transaction handling including burst transfers and address/data parity checking. Its architecture includes programmable wait-state generation and memory-mapped I/O decoding for seamless integration with PowerPC processors like MPC860.

It operates exclusively at 3.3 V with 50 MHz PCI clock input, features 256-ball PBGA (BGG256) packaging with 1.27 mm pitch, and delivers up to 0.9 W maximum power dissipation under full load. The device is qualified for industrial temperature range (–40°C to +85°C) and marked with EV suffix indicating enhanced voltage tolerance and Pb-free e1 SnAgCu finish.

Key Specifications

Pinout & Package

Packaged in a 256-ball Plastic Ball Grid Array (PBGA) with 27.0 mm × 27.0 mm footprint, 2.0 mm thickness, and 1.27 mm ball pitch. Complies with JEDEC MO-205AB and RoHS-compliant e1 SnAgCu solder finish. Moisture Sensitivity Level (MSL) 3 - requires bake before reflow if exposed >168 hours at <30°C/60% RH.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar embedded host bridge applications.

Compared with CA91L862A-50IEV, the -66IEV variant increases PCI throughput but raises SI constraints, while the -50IEG offers identical functionality with non-RoHS-compatible solder finish - making CA91L862A-50IEV the sole RoHS-compliant, industrial-temperature, 50 MHz EHB option in the QSpan II family.

Availability

CA91L862A-50IEV is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom protocol gateways, and ruggedized data acquisition systems requiring stable component supply and long-term lifecycle assurance.

Supply support for CA91L862A-50IEV 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

Integrated Device Technology (IDT) is a U.S.-based semiconductor company specializing in timing, memory interface, RF, and embedded connectivity solutions, acquired by Renesas in 2019.

The QSpan II™ product line was designed specifically to simplify PowerPC-based system integration by delivering pre-validated, PCI-compliant host bridges with configurable local bus timing for industrial and communications applications.

FAQ

What is the primary function of the CA91L862A-50IEV in a PowerPC-based system?

The CA91L862A-50IEV serves as an Embedded Host Bridge that connects a PowerPC processor (e.g., MPC860) to a standard 32-bit PCI bus while providing a configurable local bus interface for memory and peripherals. It handles PCI protocol compliance, address translation, and timing control - enabling direct integration without external glue logic. Its role is critical in systems where deterministic latency and industrial temperature operation are required, such as in CA91L862A-50IEV-based PLC or gateway designs.

Does the CA91L862A-50IEV support 5 V PCI signaling?

No, the CA91L862A-50IEV is strictly a 3.3 V PCI device and does not support 5 V signaling. Its I/Os are designed for 3.3 V LVTTL levels with 3.3 V supply only. Attempting to interface with 5 V PCI slots requires level-shifting circuitry, which is not supported by the CA91L862A-50IEV internal architecture. This constraint is explicitly defined in the CA91L862A-50IEV User Manual and IBIS models for 3.3 V PCI variants.

What package type and ball count does the CA91L862A-50IEV use?

The CA91L862A-50IEV uses a 256-ball Plastic Ball Grid Array (PBGA) package designated BGG256, with dimensions 27.0 mm × 27.0 mm and 1.27 mm ball pitch. It is RoHS-compliant with e1 SnAgCu solder finish and rated MSL-3. This package is documented in the CA91L862A-50IEV Package Drawing and confirmed across IDT's distributor inventory listings and mechanical specifications.

Can the CA91L862A-50IEV operate in extended temperature environments?

Yes, the CA91L862A-50IEV is qualified for industrial temperature operation from –40°C to +85°C, as indicated by the 'I' suffix in its part number and verified in the CA91L862A-50IEV Product Brief and Package Documentation. This rating applies to the full functional specification including 50 MHz PCI operation and local bus timing - no derating is required within this range.

Is there a drop-in replacement for the CA91L862A-50IEV with higher PCI clock speed?

The CA91L862A-66IEV is a pin-compatible alternative offering 66 MHz PCI operation while retaining identical local bus architecture, register map, and package. However, it is not a drop-in replacement in practice: signal integrity, clock distribution, and timing margin validation must be re-performed per the CA91L862A-66IEV Design Notes. The CA91L862A-50IEV remains the validated baseline for 50 MHz systems.