Intel® Stratix® 10 Devices and Transceiver Channels
The transceivers pins are located on the edge of device. There are four transceiver dies inside the package that can support up to 96 transceiver channels for F2397B package. The total size for F2397B package (U50) is 50 mm by 50 mm. The BGA pitch is 1 mm.
RED pins are RX pairs and Green pins are TX pairs. (TX pairs are located on the edge of device, while RX pairs are located further into the device)