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Secondary Thermal Interface
GE Intelligent Platforms – CM6 Hardware Reference Manual, Fourth Edition
PMC Connectors J7101, J7102, J7103 and J7104
The following table lists the pin assignments of the onboard PMC connector.
The PMC slot is PCI 64 bit and 66 MHz capable and works with the internal
PCI-PCIe bridge Pericom Pi7C9X130. The PMC is electrical and mechanical
compliant to the specification IEEE 1386 and 1386.1 with enhancements of the
Processor PMC Standard VITA 32-2003. The enhancements provide pins for a
second device (IDSELB and REQB#/GNTB#) and support non-monarch
processor PMC cards.
The PCI signaling voltage V(I/O) at the PMC is fixed to 3.3 V but the CM6
PMC is tolerant to 5 V signaling, too.
On conduction-cooled versions of boards and mezzanines the PMC modules
may be equipped with optional Secondary Thermal Interfaces. If the PMCs do
not fit into their sockets on the CM6 base board then you can remove them. Use
a matching TORX screw driver to remove the Secodary Thermal Interfaces.
For mounting use a torque of 0.3 Nm to fix the screws or use minimum force to
tighten the screws. Add only a short turn (~1/16th) when the screw starts to get
tight.
Figure 8: Mounting of Secondary Thermal Interface on PMC module
Page 37
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