Why are unknown devices detected when Auto Detect is conducted for a single Intel® Stratix® 10 in the JTAG chain? - Why are unknown devices detected when Auto Detect is conducted for a single Intel® Stratix® 10 in the JTAG chain? Description Signal integrity problems on configuration signals at power-up may make a device to enter into an unexpected mode. Unknown devices (for example, UNKNOWN_xxxx (xxxx is a number), UNKNOWN_NO_JTAG_ID) may be detected on the JTAG chain when Auto Detect is conducted by Programmer. Resolution Check and improve signal integrity of configuration signals(NCONFIG, NSTATUS) to help fix the problem. Custom Fields values: ['novalue'] Troubleshooting 15013747699 False ['novalue'] ['novalue'] novalue novalue ['Stratix® 10 FPGAs and SoCs'] ['novalue'] ['novalue'] ['novalue']