6.5 JTAG Support

The Boundary-Scan Description Language (BSDL) files are available on the PolarFire FPGA, PolarFire SoC FPGA, and RT PolarFire FPGA Microchip website that includes a full description of the Boundary-scan functionality within the PolarFire transceivers.

The transceiver I/O implementation is fully compliant with AC-JTAG standard (IEEE1149.6), meaning it works in traditional boundary scan (IEEE1149.1) with the addition of the AC function. RX boundary scan cells (BC-4) are in the scan chain, but they are for capturing DC or AC signals, from the neighboring device, which are annotated in the BSDL as "Observe_only".