I have been doing some emissions testing and PSTCLK/TCLK pin is causing us to fail (80Mhz fundamental).
I have JTAG_EN low (we dont use JTAG). This trace between pin 43 (LQFP) and the debug header is just acting as an antenna and radiating 80Mhz.
I dont want this pin oscillating unless the debugger is attached, how do I stop this pin unless the debugger / programmer is attached? Or, what is the ideal way to stop it radiating so much noise.