Universe II (2401)
VMEbus-to-PCI Bus Bridge
Industry-proven, high performance 64-bit VMEbus interface Fully compliant, 32-bit or 64-bit, 33 MHz PCI bus interface Integral FIFOs for write posting to maximize bandwidth utilization Programmable DMA controller with Linked-List mode (Scatter/Gather) support Flexible interrupt logic Sustained transfer rates up to 60-70 Mbytes per second Extensive suite of VMEbus address and data transfer modes Automatic initialization for slave-only applications Flexible register set, programmable from both the PCI bus and VMEbus ports Full VMEbus system controller functionality Support for RMWs, ADCH, PCI LOCK # cycles, and semaphores Commercial, industrial, and extended temperatures IEEE 1149.1 JTAG testability support Available in 361-pin dimpled ceramic BGA (DBGA) and 313-pin plastic BGA (PBGA) packages
Universeï¿½ II is the industry standard PCI-to-VME Bridge. Bridging is accomplished via a powerful decoupled architecture with independent FIFOs for inbound, outbound, and DMA traffic. With this architecture, throughput is maximized without sacrificing bandwidth on either bus. Universe bridges between the VME 64-bit bus to either a 32 or 64-bit PCI bus at 33MHz.
A zero-wait state implementation, with multi-beat transactions and support for bus parking, ensures that Universe II is never the bottleneck on the PCI bus. On the VME interface, a rich set of features ensures that the device fits within a wide range of applications. A full suite of addressing and data modes is implemented, including BLT and MBLT support. In addition, a fully featured system controller, interrupter, interrupt handler, and Linked-List DMA make the Universe II a flexible System Interconnect device.
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