CA91C142D-25EE

Specialized Overview

The CA91C142D-25EE is a PCI to VME bridge IC from the Universe II series by Renesas Electronics. It provides a high-performance interconnect compliant with the VME64 bus standard, supporting 32-bit and 64-bit data buses at a maximum clock frequency of 33 MHz. The device operates on a single 5 V power supply and features a decoupled architecture with independent FIFOs for inbound, outbound, and DMA traffic. It supports sustained transfer rates up to 70 Mbytes/s and includes a programmable DMA controller with linked-list mode. The component is housed in a 313-pin PBGA package and is rated for an extended operating temperature range from -55°C to +125°C.

Specialized Feature Summary

• Decoupled architecture with independent FIFOs for inbound, outbound, and DMA traffic to maximize throughput without sacrificing bandwidth.
• Zero wait state implementation for write transactions combined with pre-fetch reads and multi-beat transaction support.
• Programmable DMA controller featuring linked-list mode and flexible interrupt logic for efficient data handling.
• Full VMEbus system controller functionality with extensive address and data transfer modes.

Specialized Applications

• VME Single Board Computers (SBCs)
• Military and aerospace systems
• Industrial automation controllers
• Medical market peripherals

Specialized Procurement Notes

Verify the specific suffix EE against official Renesas documentation to confirm the extended temperature grade (-55°C to +125°C) and voltage specifications. Ensure compatibility with existing VME64 backplane designs and check for RoHS compliance status as indicated in current datasheets. Confirm availability through authorized distributors due to potential long lead times associated with specialized interface components.

Specialized Selection Notes

Select this component when designing VMEbus systems requiring direct connection to a local PCI bus with high performance. It is suitable for CPU or peripheral boards functioning as both master and slave. Consider the 313-pin PBGA package constraints and the need for 5V power supplies. Verify that the extended temperature range meets environmental requirements for industrial or military applications.

Specialized Part Context

The CA91C142D belongs to the Universe II family of PCI-to-VME bridges, designed to ease the development of VMEbus systems. This series is tailored to support advanced PCI processors and peripherals, offering industry-leading performance. The device simplifies integration by providing a robust bridge between PCI and VME64 standards, widely used in demanding embedded computing environments.

Specialized Replacement Considerations

Check for updated Universe II variants or newer generations from Renesas. Verify pinout and register compatibility if substituting with other PCI-to-VME bridge ICs. Ensure any replacement supports the required 64-bit width and extended temperature range.