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OCPRF100 MP Server System Technical Product Specification
Revision 1.0
11
2.8 Profusion
®
Carrier Tray
The processor mezzanine boards plug into the Profusion carrier tray. The Profusion carrier tray
serves as a platform to provide power and signals to the processor mezzanine board, route sig-
nals through the 1008-pin grand connector, and carry components of the Profusion chip set.
Components of the Profusion chip set that reside on the Profusion carrier are the memory access
controller (MAC) and the data interface buffer (DIB).
The Profusion chip set allows a five-port system data bus, with concurrent switching taking place.
This is a requirement for an efficient eight-way server. The Profusion chip set will support two
processor buses (each bus containing between one and four processors), two memory buses,
and a single I/O bus. All of the buses operate at 100 MHz for maximum throughput. The data is
routed through the Profusion tray, into the midplane connector for distribution to the appropriate
source (memory carriers or the I/O carrier).
Figure 2-8: Profusion
®
Carrier Tray
Assembly of the Profusion carrier board, and mezzanine boards to the Profusion carrier tray, is
performed outside the chassis. To start the assembly, install the Profusion carrier to the Profusion
tray by aligning the eight tabs on the tray with the slots on the board (See Figure 2-8 (A)). Next,
install the FPC board by passing the FPC switches through the switch openings in the tray and
A
Alignment Tabs
B
Lock Bars
C
Lock Bar
Release Handle