The JTAG connections on the FPGA are wired directly to the expansion connector MC2 on the XEM8310 to facilitate FPGA configuration and ChipScope usage using a Xilinx JTAG cable. The JTAG interface presented at MC2 is a 1.8v interface corresponding to the FPGA JTAG I/O voltage. An appropriate connector (such as a 2mm connector compatible with the Xilinx JTAG cable) would need to be wired on the peripheral attached to the XEM8310. See the Expansion Connectors page for more details. Our BRK8310 has this connector and may be used as a reference.
The USB interface on FrontPanel-enabled devices provides FrontPanel-based FPGA configuration and communication only. This interface is not available for JTAG access and is not compatible with the vendor tools for JTAG communication (i.e. Xilinx Vivado Integrated Logic Analyzer).
A vendor-supported JTAG cable is required to interface with the JTAG connector and provide tool access to JTAG. The following JTAG cables are available with connectors compatible with the connector on the BRK8310 breakout board: