Why does boundary scan fail or report length mismatches when including F-Tile FHT transceivers in the scan chain of Agilex® 7 FPGA devices when using Quartus® Prime Pro software version 26.1 or earlier?

Description

Boundary scan of F-Tile FHT transceiver channels is not supported in Agilex® 7 FPGA devices when using the Quartus® Prime Pro software version 26.1 or earlier.

Resolution

To work around this problem, you can bypass the F-Tile FHT transceiver channels in your boundary scan chain. This problem will be fixed in a future version of the Quartus Prime Pro software.