4-1
4
4Universe II (VMEbus to PCI)
Chip
Note All of the information in this chapter (except the section
Universe II Chip Problems after a PCI Reset) is taken from
the Universe II User Manual, which is listed in
Manufacturers’ Documents in Appendix A. Refer to that
manual for complete information.
General Information
Introduction
The Universe II VMEbus interface chip (CA91C142) provides a reliable
high performance 64-bit VMEbus to PCI interface in one device.
Designed by Tundra Semiconductor Corporation in consultation with
Motorola, the Universe II is compliant with the VME64 specification and
is tuned to the new generation of high speed processors.
The Universe II is ideally suited for CPU boards acting as both master and
slave in the VMEbus system, and is particularly fitted for PCI local
systems. The Universe II is manufactured in a CMOS process.
Product Overview - Features
❏ Fully compliant, 64-bit, 33 MHz PCI local bus interface
❏ Fully compliant, high performance 64-bit VMEbus interface
❏ Integral FIFOs for write posting to maximize bandwidth utilization
❏
Programmable DMA controller with linked list support
❏ VMEbus transfer rates of 60-70 MBytes/sec
❏ Complete suite of VMEbus address and data transfer modes
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