ADLINK aTCA-N700 - Manual (Page 24)

aTCA-N700 HW Users Guide
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5. Architecture Overview
The aTCA-N700 is composed of several major subsystems: the network processor
subsystem, the data plane interconnection subsystem, the control plane
interconnection subsystem, the I/O subsystem, the shelf management subsystem, the
power/clock distribution subsystem and the optional RTM subsystem.
The network processor subsystem has two sets of OCTEON II CN6880 network
processor units and their essential components, which perform as the core functional
block in the blade. The data plane interconnection subsystem includes a 320Gbps
capacity Ethernet switch and its components, which are used for interconnecting the
data plane traffic among the CN6880s, the backplane, and the service ports. The
backplane connections include the Base Interface in 1000BASE-T Ethernet, and the
Fabric Interface configurable to be compliant with PICMG3.1 Option 3 (4Gbps Ethernet,
4 lanes) or Option 9 (10Gbps Ethernet, 4 lanes), 10GBase-KR (10G Ethernet@1x lane)
or 40GBase-KR4 (40Gbps Ethernet@4x lanes) support depending on the HUB slot
configuration.
The control plane interconnection subsystem includes a dedicated Base Gigabit
Ethernet switch that switches various control traffic among the control plan components
including two Base Interface ports.
The I/O subsystem includes all the I/O related blocks such as the front panel interface,
and the RTM interface. The shelf management subsystem includes the IPMC and its
associated interfaces to support the ATCA chassis/shelf/blade management for the
external Shelf Manager. The architecture is illustrated on Figure 5-1. The details of
each subsystem are described in the following sections.
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Figure 5-1 aTCA-N700 Architecture with optional RTMs