GE OpenVPX VPXcel6 SBC622, Hardware Reference Manual

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32 SBC622 Hardware Reference Manual
1.8 Installing or Removing a PMC Card
The SBC622 incorporates PMC expansion sites that support the PCI ‐ X bus. The
PMC sites are on private PCI ‐ X bus segments allowing for maximum data transfer
rates of 1064 MByte/s between the processors and the PMC device. The PMC sites
are capable of up to 133 MHz operation and support for 3.3 V or 5 V signaling and
VIO. They are compatible with the earlier PCI interface versions
(33/66 MHz, 32/64 ‐ bit).
NOTE
For best performance, PMC card drivers should use DMA.
The following procedure is applicable for both removal and installation of PMC
modules and fully populated PMC cards. See Figure 1 ‐ 3 PMC Installed onto 2 ‐
PMC Site Model on page 33.
1. Remove the mezzanine screws.
2. Separate the mezzanine connector while lifting and rotating the mezzanine
board. Pull away from the front panel.
3. Remove the PMC modules by removing two mounting screws per module.
This step will be necessary when initially installing a PMC card into a
SBC622.
Follow the reverse sequence to install a PMC card or a PMC module.
1.8.1 Installing 3.3 V or 5.0 V VIO Keypin
The SBC622 supports both 3.3 V and 5.0 V VIO via the placement of the PMC
keypin. A patented circuit automatically configures the sites VIO based on the
location where the key is installed.