Firefly; Figure 9 Firefly Locations; Figure 10 Firefly Ring Connections - Alpha Data ADM-PCIE-8K5 User Manual

ADM-PCIE-8K5 User Manual

3.6 FireFly

Two FireFly receptacles near the front of the board allow for additional 16.375G lanes. The FireFly connections
have the same capabilities as the SFP+ cages, with much greater lane width. There are 4 lanes per FireFly,
adding up to 8 lanes at 16.375Gps resulting in 131Gbps total bandwidth. This can be configured in a ring
orientation as depicted in the image below, or allow for MPO style breakouts at the front panel (full-height panel
only).The ADM-PCIE-8K5 support both copper and optical FireFly modules. More information on FireFly can be
found at https://www.samtec.com/optics/optical-cable/mid-board/firefly
Both FireFly sites have control signals connected to the FPGA. Their connectivity is detailed in the
Pinout Table at the end of this document. The notation used in the pin assignments is FireFly0 and FireFly1 with
locations clarified in the diagram below.
The FireFly modules may be connected between adjacent ADM-PCIE-8K5 boards in order to form powerful
distributed processing rings.
Functional Description
ad-ug-1319_v1_12.pdf
Figure 9 : FireFly Locations
Figure 10 : FireFly Ring Connections
Complete
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