The Alveo U200/U250 accelerator cards host two 100G interfaces, each comprised of a 4-lane QSFP28 connector. The QSFP case temperature must be less than 85°C for class 3 optical modules (< 2.5W), and less than 70°C for class 4 optical modules (< 3.5W). The user needs to provide sufficient airflow and ambient temperature to ensure the optical module remains within the manufacturer's specification.
Each connector is housed within a single QSFP cage assembly, located on the I/O bracket. The QSFP port number and location are shown in the following figure.
The following table provides the mapping of the I/O bracket QSFP port name to the QSFP FPGA GT Quad. In addition, for those using the AMD Vitis™ flow, it provides the GT index allocated in the Vitis software platform.
|QSFP Port||QSFP FPGA GT Quad||QSFP GT Index (Vitis Platform)|
|QSFP 1||QUAD_X1Y12 (U200)
|QSFP 2||QUAD_X1Y11 (U200)