EKF PCZ-NVM, Техническая информация

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Technical Information • PCZ-NVM • CPU Expansion Side Card
Backplane/Power Connectors
The backplane connector suite is comprised of two hard metric 2.0mm compliant to CompactPCI®
PICMG® 2.0. Both connectors are optional. J1 is only used for enforcement of the +5V power rail,
no data signals are in use. J2 can be stuffed as an option for even more mechanical ruggedness of
the assembly and is not connected over all pins.
Typically, there is no need at all for the connectors J1/J2. For demanding M.2 SSDs however and
with USB powered devices attached, J1 can strengthen the +5V rail (which is used by a DC/DC
converter to ge3.3V for the M.2 sockets). On a backplane with the system slot (CPU card)
right aligned, the PCZ-NVM board and its J1 connector would be out of the backplane shape
(however a custom backplane with an additional slot could solve this issue). In such a system the
+5V power rail would be sourced via the mezzanine connectors HSE1/2 only. A backplane with
left aligned system slot allows addi5V current via J1, but this means loss of a peripheral
card slot.
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