ADM-PA101 User Manual
3.6 FireFly
There is one FireFly site available on the circuit board. The site is capable of hosting either active optical or
passive copper FireFly connectors. The communication interface can run at up to 28Gbps per channel in either
cable type. There are 4 channels on the FireFly site (total maximum bandwidth of 114Gbps). This site is ideally
suited for 4x 10G/25G, 1x 100G Ethernet, or any other protocol supported by the Xilinx GTY Transceivers.
Please see Xilinx User Guide UG578 for more details on the capabilities of the transceivers.
All FireFly sites have control signals connected to the ACAP. Their connectivity is detailed in the
at the end of this document. The notation used in the pin assignments is FIREFLY* with locations clarified
in the diagram below.
Figure 9 : FireFly Locations
The management interface of each FireFly module is connected directly to the ACAP. Each low speed sideband
signals (MODPRS, INT_L, RST_L, SDA, SCL) has an external pull-up resistor.
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Functional Description
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