Motorola MVME2300 Series - Manual (Page 225)

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4 Universe (VMEbus to PCI) Chip
Introduction
This chapter describes the VMEbus interface on MVME2300 series
boards, the CA91C042 Universe ASIC. The Universe chip interfaces the
32/64-bit PCI local bus to the VMEbus. It provides a PCI-bus-to-VMEbus
interface, a VMEbus-to-PCI-bus interface, and the DMA controller
functions of the local VMEbus.
Note that all of the information in this chapter (except the section entitled
Universe Chip Problems after PCI Reset ) is taken from the Universe User
Manual, which is listed under Manufacturers’ Documents in Appendix A,
Related Documentation . Refer to that manual for detailed information on
the Universe ASIC.
Features
The Universe VMEbus interface chip (CA91C042) 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 is compliant with the VME64 specification and is
tuned to the new generation of high-speed processors.
The Universe 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 is manufactured in a CMOS process.