SMART Embedded Computing 6806800V18A, Installation And Use Manual

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58 AXP1440-C07 Installation and Use (6806800V18A)
Platform Architecture
Platform Architecture
which on the AXP1440-C07 contains a switching function that forwards packets to the
appropriate port based on the packet's address. The switching hubs of the AXP1440-C07
support a 1Gbps base interface and a fabric interface that supports up to 40Gbs (PICMG
3.1 Option 9-KR).
1.4 Network Descriptions
This section describes the operational aspects of each of the shelf’s network designs,
based on base and fabric interfaces.
1.4.1 Base Interface
The base hub slots (physical slots 6 and 9) have four pairs of 1000Base-T signals to node
slots which form the dual star topology fabric. Each of the node slots support two base
channel interface signals that connect to each hub slot. In turn, the channel 1 base interface
of each hub slot is connected to the SAM1620-D. Each of the hub slots support a total of
14 base channels.
The hub slots require connectors P23 and P24. The base node slots require only connector
P23.
1.4.2 Fabric Interface
The fabric interface supports point-to-point connections between AdvancedTCA blades. In
the AXP1440-C07, these fabric connections are configured in a dual star topology that runs
back to the hub slots. The AXP1440-C07 system has 40Gbps (Option 9-KR) channel slots.
These channels are aggregated at the hub slots into the dual-star topology. In this
configuration, all node slots support one fabric channel to each of the two hub slots.
The implementation of the interface is indicated by the level of PICMG compliance a blade
or hub is designed to. The AXP1440-C07 supports the PICMG 3.1 fabric standard to allow
for several configuration options that can provide greater bandwidth to certain slots in the
shelf. The fabric interface switch supports PICMG 3.1R2 40Gbps (Option 9-KR).
Figure 1-8
shows the AXP1440-C07 shelf update channel connectivity.
NOTICE
The blade slots are numbered physically from 1 to 14 going left to right along the
front of the shelf. Each slot also has a logical slot number that defines it for
backplane connectivity. Logical slot numbers are not shown on the shelf. The slots
are referred to by their physical slot location.