The CA91C142D (Universe II) is the industry's leading high-performance PCI to VME interconnect. It is fully compliant with the VME64 bus standard, and is tailored to support advanced PCI processors and peripherals. With a zero wait state implementation for write transactions, and the capability to support pre-fetch reads and multi-beat transactions, the Universe II provides high performance utilization of the PCI bus.

The Universe II eases development of VMEbus systems by providing direct connection to a local PCI bus. The device is ideally suited for CPU or peripheral boards functioning as both master and slave in the VMEbus system. Bridging is accomplished through a decoupled architecture with independent FIFOs for inbound (VME to PCI), outbound (PCI to VME), and DMA traffic. With this architecture, throughput is maximized without sacrificing bandwidth on either bus.

Designing with the Universe II eases the development of VME Single Board Computers (SBCs) and I/O peripherals targeting the military, aerospace, industrial automation and medical markets.


  • High performance 64-bit VME to PCI bus interconnect
  • Industry-proven, reliable PCI to VME bridge
  • Fully compliant, 32 or 64-bit, 33 MHz PCI bus interconnect
  • Integral FIFOs for write posting to maximize bandwidth utilization
  • Programmable DMA controller with Linked-List mode
  • Flexible interrupt logic
  • Automatic initialization for VME slave-only applications
  • Extensive suite of VMEbus address and data transfer modes
  • Register set programmable from both the PCI and VME64 buses
  • Full VMEbus system controller functionality
  • Sustained transfer rates of up to 60-70 Mbytes/s
  • Support for RMWs, ADOH, PCI LOCK cycles, and semaphores
  • Location monitors for broadcasting interrupts and message passing
  • Commercial, industrial, and extended temperature variants
  • IEEE 1149.1 JTAG 

Product Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active PBGA 313 E No Tray
Active PBGA 313 C No Tray
Active PBGA 313 C Yes Tray
Active PBGA 313 I No Tray
Active PBGA 313 I Yes Tray

Documentation & Downloads

Title Other Languages Type Format File Size Date
User Guides & Manuals
Universe IID/B User Manual Manual PDF 2.13 MB
Application Notes & White Papers
Tsi148/Universe II Differences Application Note Application Note PDF 164 KB
Universe IID Debug and Initialization Notes Application Note PDF 188 KB
PCN# : A1604-02 Ink Mark to Laser Mark Product Change Notice PDF 128 KB
PCN# : A1412-02 Change of Mold Compound Material Product Change Notice PDF 23 KB
Universe II IBIS Model Model - IBIS ZIP 37 KB
Universe IID BSDL File Model - BSDL ZIP 8 KB
Universe IID/B Device Differences Misc PDF 40 KB
Universe IID-B Device Errata and Design Notes Device Errata PDF 64 KB
Universe IID VME to PCI Bridge Product Brief PDF 81 KB