I am new to Arduino2560. We are using TMC429 Motion controller,So need to provide 16Mhz clk. So kindly advice how to provide / which pin i need to connect from Arduino2560 to TMC429.
According to the official arduino Mega website, the clock signal is not routed to any external pin.
You'd have to solder wires directly to the quartz or capacitors, but you'd risk to create noise on the CLK pins which could disturb the CPU.
