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Edition 5-8
PMC Interface
PMC Sites
The PowerPact6 family has two sets of connectors (J11/J12/J13/J14 and J21/J22/J23/J24) that allow
industry-standard PMCs to be fitted to the PowerPact6 processor, routed to the J3 and J5 connectors. The
PMC PCI interfaces are independent from the Compact PCI interface. For Host card layout information,
see Figure 5-2.
The PMC sites are connected to the processor via PCI buses with user-selectable 5V or 3.3V signaling.
One bus uses the PCI-X protocol (backward compatible with standard PCI), and supports 32- or 64-bit
data widths and bus speeds up to 133 MHz. Running at 64-bit/133 MHz gives a maximum burst transfer
data rate of 1024 MBytes/second. The other bus can run at 66 or 33MHz and 64 or 32-bits wide,
depending on the PMC fitted. Running at 64-bit/66 MHz gives a maximum burst transfer data rate of
528 MBytes/second, compared with 132 MBytes/second for 32-bit/33 MHz. This combination of PCI
and PCI-X allows a state of the art and a legacy PMC to be run simultaneously with no loss of
performance.
Front panel I/O is fully supported on levels 1 to 3, and with reduced functionality, on levels 4 and 5
product. While a level 4 or 5 PowerPact6 processor can only accept conduction-cooled PMCs, levels 1 to
3 PowerPact6 processors can accept either air-cooled or conduction-cooled PMCs, as long as adequate
cooling is provided. Air-cooled PMCs are defined in the IEEE 1386 Standard, and rugged conduction-
cooled PMCs are defined in the ANSI/VITA 20 – 2001 Standard for Conduction-cooled PMCs.
A range of PMCs is available both from Radstone and third parties. Radstone PMCs are supplied with a
full kit of parts for mounting them, a manual and full fitting instructions (see the PMC Installation Note,
publication number HN4/3-99). PMCs ordered with a PowerPact6 board can be supplied factory fitted by
Radstone, if required.
The additional signals defined by VITA32 (Processor PMC Standard) are also implemented. A Processor
PMC may only operate in non-monarch mode on the PowerPact6 processor.
Figure 5-2. PMC Connector Positions and Numbering
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