ADLINK aTCA-N700 - Manual (Page 15)

aTCA-N700 HW Users Guide
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3.2. Zone 2 Backplane Interfaces
ATCA specifications define Zone 2 for Fabric, Base and update channel interface
interconnections. The Base Interface port is compliant to 1000BASE-T Ethernet. Two
Base Interface ports from the backplane to support dual star hub are connected to the
Ethernet switch in the blade. Through the switch, the Base Interface traffic goes to the
LMP for necessary processing. The Fabric Interface supports a dual star configuration,
in which the blade connects to two switch fabric boards in the chassis in a
primary/redundant operation. The two Fabric Interface ports are connected to the high
capacity on-board Ethernet switch, where the port speed is configurable to
1Gbps/10Gbps/40Gbps in the form of one SerDes lane at 1Gbps or 4 SerDes lanes at
2.5Gbps each or 4 SerDes lanes at 10Gbps each to be compliant with option 3/9,
10GBase-KR, 4x10GBase-KR or 40GBase-KR4 (40G Ethernet) respectively.
Detailed signal definitions can be found in the Appendix.
3.3. Zone 3 Backplane Interface for Rear Transition Module
The Zone 3 connectors are reserved for the rear transition module (RTM). Supporting
different types of RTMs per different application is an essential element for adaptation
of the blade. The interface is composed of the data plane interface, the control plane
interface, and the auxiliary interface. For the data plane interface, Twelve 10Gbps
SerDes lanes are routed to the Zone 3 connectors. The twelve SerDes lanes are
connected to the high capacity on-board switch. The SerDes lanes can be configured
for either twelve SFI 10G ports or up to three XLAUI 40G or equivalent ports. Other
auxiliary interfaces include an I2C connection to support managed RTMs. See
Appendix for the detailed signal definitions.