SMART Embedded Computing 6806800V18A, Installation And Use Manual

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AXP1440-C07 Shelf Description
AXP1440-C07 Installation and Use (6806800V18A) 67
2.6 Backplane
The shelf backplane supports two hub slots, 12 node slots, and two SAM1620-Ds. This
AdvancedTCA backplane provides the IPMB and I
2
C bus interface signals from the shelf
manager to all AdvancedTCA blades and the other FRUs. The backplane provides signal
routing for failover signals between active SAM and standby SAM. The power connectors
for the power entry modules are located on the backplane. The backplane is not a FRU.
2.6.1 Functional Layout
The backplane provides dual star base interface and dual star fabric interface connections
at each blade slot with segmented power (two power segments) provided by the dual
PEMs.
The blade slots are numbered physically from 1 to 14 going left to right along the front of
the shelf. Numbers on slots 6 and 9 designate the hub slots, refer to
Rear Shelf View on
page 65
. Each slot also has a logical slot number that defines it for backplane connectivity,
logical slot numbers are not shown on the shelf. The backplane functional layout is shown
in the following figure.