Why can’t I access the Intel® MAX® 10 device via JTAG even though JTAGEN is pulled high in user mode? - Why can’t I access the Intel® MAX® 10 device via JTAG even though JTAGEN is pulled high in user mode? Description When the JTAGEN pin option is enabled in the Intel® Quartus® Prime Software, Intel® MAX® 10 device JTAG pins will become user I/O pins in user mode . If there are no I/O pin assignments on the JTAG pins, they will be reserved as unused I/O pins and will be set as input tri-state in user mode. Thus, these unused I/O pins will not function as dedicated JTAG pins even though the JTAGEN pin is pulled high in user mode. Resolution If you intend to switch back and forth between user I/O pins and dedicated JTAG pin functions using the JTAGEN pin, you must make I/O pin assignments on all the JTAG pins in Pin Planner to identify the pin direction (input, output or bi-directional) and also the I/O standard. Related Articles How do I gain access to the JTAG pins of my Intel MAX 10 device if I have enabled the JTAG pin sharing option, and the Quartus Prime Programmer is unable to auto detect the device? Custom Fields values: ['novalue'] Troubleshooting 2205827818 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software'] 17.0.1 15.0 ['MAX® 10 10 FPGAs'] ['novalue'] ['novalue'] ['novalue']